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                    <text>Item ID Number

00579

Author

Cutting, Robert T.

Corporate Author

U. S. Department of Defense

Report/Article TftlQ Congenital Malformations, Hydatidiform Moles, and
Stillbirths in the Republic of Vietnam, 1960-1969

Journal/Book Title
Year

197

MOUth/Dey

December

Color

°

D

Number of Images

34

DeSOriptOU NOtQS

Alvin L. Young filed this item under the category
"Human Exposure to Phenoxy Herbicides and TCDD"

Tuesday, February 20, 2001

Page 579 of 680

��CONGENITAL MALFORMATIONS
//v
HYDATIDIFORM MOLES
AND STILLBIRTHS
IN THE REPUBLIC OF VIETNAM

1960 -1969

Robert T. Cutting 1
Tran Huu Phuoc 2
Joseph M. Ballol
Michael W. Benenson1
Charles H. Evans 3

D e c e m b e r 1970

1

US Army Medical Research Team (Walter Reed Army Institute of Research), Vietnam
(Present address: Walter Reed Army Institute of Research, Wash., DC 20012)

2

Ministry of Health, Government of the Republic of Vietnam

3

0ffice of the Command Surgeon, Military Assistance Command, Vietnam
For sale by the Superintendent of Documents, U.S. Government Printing Office
Washington, D.C. 20402 - Price 45 cents
I)

�SYNOPSIS-ABSTRACT

A ten-year survey of the incidence of stillbirths, hydatidiform moles
and congenital malformations was conducted in the Republic of Vietnam
using records maintained at 22 hospitals.

The study collected 480,087

livebirths, 16,166 stillbirths, 2,866 moles and 2,355 malformations of all
types. The military use of herbicides is depicted and the data are sorted
into two time periods, pre- or light-spraying years (1960-65) and heavyift&amp;i,spraying years (1960-69). Comparing the earlier with the later period the
stillbirth rate was 36.1 and 32.0, the mole rate was 6.6 and 5.6 and the
malformation rate was 5.5 and 4.5 per 1000 livebirths.
biased by data from population centers.

The survey is

�ACKNOWLEDGMENTS

Dr. Trang Minh Tung - Minister of Health, Government of the Republic of Vietnam
Dr. Dinh Xuan Minh -- Special Assistant to the Minister of Health
Dr. Dang Quoc Phu -- Director, National Institutes of Public Health
Dr. Trung Minh Cac — Vice General Director of Health, Ministry of Health
Vo Liet Nu-- Chief, Records Section, Tu-Du Maternity Hospital
BG Richard R. Taylor — Command Surgeon, Military Assistance Command, Vietnam
Dr. Theodore R. Woodward — Professor of Medicine, University of Maryland,
School of Medicine
Col. Robert J. T. Joy - Deputy for Medical and Life Sciences, Office of
Director of Defense Research and Engineering
Maj. Herbert E. Segal - Division of Preventive Medicine, Walter Reed Army
Institute of Research

�CONTENTS
Page
Synopsis-Abstract

»

i

Acknowledgments

ii

Introduction

1

Methods

3

Results

4

Discussion

°

5

Conclusions

7

Tables

9

Figure 1 Location of Hospitals Visited

25

Figure 2 Number of Livebirths Collected by Year, Republic of Vietnam
1960 - 1969

26

Figure 3 Countrywide Incidence of Stillbirths, Malformations and Moles
per 1000 Livebirths per Year
Figure 4 Acres Sprayed by Year, Republic of Vietnam, 1960-1969
References.

„

27
28
29

�INTRODUCTION

In 1969 Bionetics Research Laboratories reported an increase incidence of developmental abnormalities in rats and mice born of mothers
which had received 2, 4, 5-trichlorophenoxyacetic acid (2,4,5-T) during
early pregnancy (1).

Because herbicides* containing this compound had

been used for military purposes in the Republic of Vietnam (RVN), concern
was expressed about possible similar effects in humans.

To determine

whether such effects could be shown in humans, the Ministry of Health,
RVN, (MOH) and the US Military Assistance Command, Vietnam (MACV)
undertook a cooperative study of obstetrical records over the 10 year interval 1960 - 1969 in 22 hospitals. This report describes the incidence of
recorded congenital malformations, stillbirths, and hydatidiform moles in
RVN before (1960 - 1965) and after (1966 - 1969) large scale military use
of herbicides.

* A gent Orange, used in Vietnam defoliant operations, is composed of a
1:1 mixture of the n-butyl esters of 2,4-dichlorophenoxyacetic acid and
2,4,5-trichlorophenoxyacetic acid.

��METHODS
Evaluations of Obstetrical Records and Survey Procedures.
The initial efforts were directed to assess the availability and accuracy of obstetrical records in Vietnamese medical facilities, and to develop techniques for review and
interpretation. A pilot study performed in seven provincial and district hospitals and one
Saigon hospital (Tu-Du) revealed that Vietnamese obstetrical records were available
and accurate, and developed reviewing techniques. The survey was then extended to
other medical care facilities throughout the country.

Hospital Ledger.
In all but four hospitals, a Daily Summary Ledger, prepared by the chief midwives
served as the primary source document. This contained 15-20 categories of information
on each obstetrical or gynecologic patient. The following information was recorded:
hospital admission number; patient's name, age, parity, and date of admission; presentation, time, and method of delivery; baby's sex, weight, and general condition at birth;
placenta weight; estimate of blood loss; and name of person attending. A "remarks"
column recorded such data as vacuum extraction, reversion, placenta delivery assistance, Caesarean section and indication, blood transfusion, uterine revision, maternal
or infant complications with treatment and results, and, most germane to this study,
congenital malformations. Some hospitals also included in the Ledger the patient's
address and occupation, father's name and occupation, baby's name, date of discharge
or departure prior to discharge, and whether patient paid for her care. The accuracy of
the information in the Daily Summary Ledger in each hospital was tested by comparing
it to the information in random samples of individual medical records. Several hundred
such comparisons failed to reveal any discrepancies. No Daily Summary Ledger was
kept at Hue, My Tho, or Tay Ninh; at these hospitals each individual obstetrical and
gynecological record available was individually examined.

Records System at Tu-Du
A system of automatic data processing is used at Tu-Du Maternity Hospital in
Saigon which was devised by a staff member trained in statistics in the United States
and who has been chief of that medical records office for 12 years. The system uses
manual coding of the information derived from the hospital records, transposition to
punch cards and compilation. Eighteen malformation types are specified; these include
all those commonly observed, the remainder are categorized as unspecified.

�Criteria for Stillbirth, Malformation and Mole.
Abortions were distinguished from stillbirths by recorded fetal weight. Stillbirth
was defined as fetuses weighing 750gm. or more and without evidence of life after
complete separation from the mother. Only a few weighed less than lOOOgm. In the
rare case where fetal weight was not recorded, stillbirth was defined as a birth with a
gestation period of twenty-four weeks or longer.
Malformations were counted in both livebirths and stillbirths. Malformations associated with abortions were not counted. More than one malformation was occasionally
recorded for a single infant and these malformations were counted individually. In no
case were more than three malformations recorded for a single birth. Hydatidiform moles
were counted only if delivered.

Hospitals Surveyed
The location of each hospital visited is shown in Figure 1. All are Ministry of
Health public hospitals and are free to those who do not desire or cannot afford to pay.

RESULTS
A total of 499,119 birth events were counted. There were 480,087 livebirths,
16,166 stillbirths, and 2,866 hydatidiform moles. Table 1 shows the location and type
of hospital by geographic area, the years for which data were available and the number
of livebirths counted. A small number of birth events for the years 1959 and 1970 were
collected and are included in Table 1 for completeness. If these data are excluded,
there are 488,852 total birth events, which include 470,200 livebirths, 15,812 stillbirths
and 2,840 hydatidiform moles during the 1960-69 decade under consideration.
Figure 2 shows the number of livebirths collected by year. Hospitals outside the
Capital contributed the largest portion of the progressive increase in number of livebirths.
Only a few hospitals had records for the entire decade. There is a relative lack of data
for the first half of the decade. Before 1969, hospital records were kept for varying
periods of time. Since 1969, MOH has required records maintenance for a minimum of
five years.
The incidence of abnormal birth events by geographic area is shown in Table 2,
and includes 1959 and 1970 data. All rates are expressed as per 1000 livebirths. Wide
variations in some hospitals' annual incidence of all birth events were observed, and in
some hospitals the rates were unrealistically low. Except in the smallest hospitals,
variation in rates was usually greater between hospitals than the year-to-year variation
within hospitals. Excluding the small district hospitals, stillbirth rates varied from
8.7 at Long Dien (4,214 livebirths over 7 years) to 62.7.at Qui Nhon (6,303 livebirths
over 4 years). Hydatidiform mole rates varied from 1.4 at Tan An (24,596 livebirths

�'over"» years) 10 ib'i'iTai'""Can ivno (16,066HVfeeinttgtfVerCU years). Maltormation rates
varied from 1.1 at Tan An to 7.4 at Hue (5,271 livebirths over 2.3 years).
Table 3 presents annual birth abnormality rates for the years 1959 - 1970. If 1959
and 1970 data are excluded, the rates for the decade are: stillbirth - 33.6, moles -6.0,
and malformations - 4.9. Figure 3 depicts the decline in the countrywide stillbirth rate,
and the stable mole and malformation rates. The rates of stillbirths, moles and malformations for the four geographic areas are compared in Table 4.

Congenital Malformations.
Table 5 presents the 2,355 congenital malformations by type collected from all
hospitals. Only obvious congenital malformations were recorded. Forty percent of all
malformations were not specified by type in the Ledger nor in the individual medical
records of the patients. Anencephaly, cleft lip/palate, clubfoot and hydrocephaly accounted for over 80% of all specified malformations. Congenital heart disease was not
recorded nor were there autopsy reports on those infants who were dead at birth or died
shortly thereafter. The hospital records do not distinguish between harelip and cleft
palate, the general term "bee de lievre" being used for both malformations. Unusual
deformities, such as those associated with thalidomide, were not reported.

Individual Hospital Data
Tables 9 through 29 present the birth defect data for each individual hospital surveyed.

Herbicide Usage in Vietnam.
Figure 4 shows the number of acres sprayed by year in Vietnam during the decade (3).
Prior to 1966 there was comparatively little use of herbicides. Since 1966, more than
800,000 acres were sprayed annually. The birth defect data were grouped into pro- and
light-spraying years (1960 - 1965) and heavy-spraying years (1966 - 1969). In Table 6
the data for these two periods are compared. The data for the years 1959 and 1970 are
not included in this Table.

DISCUSSION
This study does not directly test a relationship between herbicides and birth abnormalities. Such an assessment would require prospective studies with examination of one
population before and after exposure, or examination of two comparable populations with
only one exposed to herbicides. Information about the precise dose of herbicide to
which pregnant women were exposed and the week of pregnancy would be required. Careful examination and follow-up appraisal of all livebirths would be necessary to detect

�tne presence ot inapparent maitorniauons. Ail stillborn ana luiant ueatns wouia require
post-mortem examination. The dose of herbicide could then be related to embryological
development of malformations. It is obviously impossible to carry out such a study.
This study has several biases. The first is that nearly all the information was
derived from population centers and larger hospitals. In the six district hospitals visited
(Tables 1 and 2) there were only 9857 livebirths with 86 stillbirths (a rate of 8.7), 3
moles (a rate of 0.3) and 14 malformations (a rate of 1.4). The two Saigon maternity
hospitals contributed 59% of the data.
The second bias is the absence of data from private medical sources. There are
several private hospitals in Saigon with large obstetrical departments and excellent
standards of practice. Many other cities have private hospitals. All cities had several
private "cliniques" usually directed by a single physician. Wealthier Vietnamese often
attend these private hospitals, and the birth defect rates in this population might differ
from those obtained in this survey. This is suggested by data from the Da Lat province
hospital which has two classes of patients. One class, presumably wealthier, pays for
obstetrical care. Both classes are served by the same obstetrical personnel and the
same labor and delivery rooms. The only difference is assignment to different areas of
the hospital for the post-partum period. The hospital maintains the records separately
and the information was so collected and analyzed in this study (Tables 1, 2, 20, and 21).
The paying class had lower stillbirth, mole and malformation rates.
The third bias is that the data are restricted almost exclusively to ethnic Vietnamese.
There are a half million Chinese living in the Saigon/Cholon area and they use the six
private Chinese hospitals in the area, none of which were surveyed. Montagnards as a
rule do not enter district or province hospitals, but deliver at home.
Untoward events limited the availability of data at some hospitals. These include a
mortar round exploding in the record room at My Tho in 1968, a flood in the record room
at Qui Nhon in 1965, the loss of 1961 and 1962 Hung Vuong records which were borrowed
for a medical school project, administrative disposition of record files, before 1965 at
Can Tho and Ban Me Thout and before 1967 at Pleiku and Tay Ninh, and finally the 1968
Tet Offensive when several hospitals became battlegrounds and some records were
destroyed.
During the earlier part of the decade, some hospitals reported very few birth defects
and hospital personnel frankly admitted incomplete reporting during those years. Most
of the directors of the hospitals visited had been appointed within the past few years,
and improvement in records keeping coincident with their assignment resulted in more
complete reporting during the latter part of the decade. This has caused comparatively
higher reported rates for recent years and in some hospitals the data suggest an upward
trend when one actually may not exist; i.e., at Baria,Nha Trang, and Ban Me Thuot.
Changes in local obstetrical referral practices influence rates in specific hospitals.
For example, those district hospitals near province hospitals began to refer problem
cases to the province hospital when doctors with obstetrical training were assigned.
Referral practice has been influenced by gradual improvement in roads, public trans-

�portation, and security. The referral system accounts for the higher abnormality rates
in province hospitals. This influence is also noted in the Capital area. For example,
Tan An and Bien Hoa refer many problem and mole patients to the Tu-Du hospital in
Saigon.
Rates are influenced by other factors. A study of moles begun in the Nha Trang
hospital in 1968 resulted in a striking increase in the mole rate, probably due to more
complete reporting and to the referral of a larger number of patients with suspected moles
from surrounding districts.
The feasibility of relating the birth data collected to the quantity of herbicide sprayed
by province by year was studied. Initially it seemed possible that abnormal birth event
rates might be correlated to the amount of herbicide sprayed. The records for each aerial
spray mission, including map coordinates of the area covered and the type and quantity
of herbicide used, were made available by MACV. However, it was not possible to determine what proportion of any province's total yearly birth events are included in this
survey. Neither the MOH Maternal and Child Health Program nor the birth registry system
collect complete data. RVN officials estimate that currently only 70% of all births are
reported to MOH and only 50% are reported as registered to the National Institute of
Statistics. Our inability to obtain a consistent sample of birth events by province precluded meaningful correlation between spray and birth event data.
Comparisons of birth event data between countries are difficult because of variations
in reporting procedures and differences in definitions of the various events. The incidence of stillbirths, moles, and malformations from studies in large Asian populations
(4-13) is shown in Tables 7 and 8. The data from this study fall within the ranges
reported by other workers.

CONCLUSIONS
Medical records at Vietnamese medical facilities were found to be sufficiently complete and accurate to compile birth events data for the decade of the sixties. Except
in the Saigon area, there was frequent under-reporting of abnormal birth events particularly in the first part of the decade, resulting in unrealistically low rates in some
hospitals for that earlier period.
This survey collected information on 480,087 livebirths, 16,166 stillbirths, 2,866
moles and 2,355 congenital malformations of all types from medical records maintained at 22 hospitals representing the Coastal, Interior, Capital and Delta geographic
regions. There was a decline in the countrywide stillbirth rate and stable mole and
malformation rates during the decade, weighted by the Saigon experience which contributed 59% of the data.
Meaningful correlation of any province's annual abnormal birth events to quantitative
herbicide data was precluded by our inconsistent sampling of birth data.

�Sorting the data into two time periods, before (1966-65) and after (1966-69) the large
scale military use of herbicides, failed to show any influence of herbicides. Rather, a
downward trend was observed in all categories of abnormal birth events. In comparing
the earlier with the later period the countrywide stillbirth rate was 36.1 and 32.0, the
mole rate was 6.6 and 5.6, and the malformation rate was 5.5 and 4.5. These rates are
within the ranges reported for other Asian populations.
A natural variation was observed in the incidence of abnormal birth events as recorded
during the decade. This variation was frequently of a greater magnitude between hospitals
than the year-to-year variation within hospitals. The effect of any single variable (i.e.,
herbicides) cannot be demonstrated unless it changes this natural variation and is not
masked by other variables. Such a change was not found in this survey.

Vietnam
Herbicides
Malformations
Moles
Stillbirths ,

�TABLE 1.

LOCATION AND TYPE OF HOSPITALS SURVEYED, YEARS OF DATA
AVAILABILITY, AND NUMBER OF LIVEBIRTHS COUNTED

TYPE*

YEARS**

D
P
P
P
D
P
P
D

1962-70
1960-70
1964-70
1966-69
1966-70
1967-69
1968-70
1967-70

4,375
13,543
15,789
6,190
1,190
13,061
5,271
3,553

P
P
P
P
P

1967-69
1968-70
1966-70
1960-70
1960-70

6,947
2,488
5,808
4,658
10,860

C
C
C(P)

1960-69
1959-69
1961-69

182,450
99,600
40,099

D
P
P
P
P

HOSPITAL

1969-70
1965-69
1969
1964-70
1961-69

740
16,056
3,922
18,891
24,596

Coastal Plain
Long Dien
Baria
Nha Trang
Qui Nhon
Tuy Phuoc
Da Nang
Hue
Hue Districts (3)

LIVEBIRTHS

Interior
Tay Ninh
Pleiku
Ban Me Thuot
j
Da Lat (Paying)
Da Lat (Nonpaying)
Capital
Tu-Du Maternity Hospital
Hung Vuong Maternity Hospital
Bien Hoa
Delta
Cai Rang
Can Tho
My Tho
Kien Hoa
Tan An
TOTAL

*D » District, P = Province, C = Capital
** Data for 1970 restricted to the first 3-4 months

480,087

�TABLE 2.

HOSPITAL

INCIDENCE OP BIRTH ABNORMALITIES
BY GEOGRAPHIC AREA

Stillbirths

Rate*
Moles

Malformations

Coastal Plain
Long Dien
Baria
Nha Trang
Qui Nhon
Tuy Phuoc
Da Nang
Hue
Hue Districts (3)

8.7
26.2
47.0
62,
14,
42,
48,
4.7

0.8
4.3
6.8
0.3

1.8
2.7
2.9
4.0
0.8
2.8
7.4
1.1

Interior
Tay Ninh
Pleiku
Ban Me Thuot
Da Lat (Paying)
Da Lat (Nonpaying)

37.9
27.7
43.6
20.0
51.0

6.3
2.4
2.1
1.1
5.6

1.4
0.8
0.9
1.7
6.3

Capital
Tu-Du
Hung Vuong
Bien Hoa

34.8
32.3
21.8

9.2
4.1
1.1

7.1
5.0
2.4

18.9
54.4
43.8
30.3
22.9

1.8
15.8
10.4
1.7
1.4

1.8
6.4
4.6
1.2
1.1

33.7

6.0

4.9

0
1.9
6.3
3.2

Delta
Cai Rang
Can Tho
My Tho
Kien Hoa
Tan An
COUNTRYWIDE

*per 1000 livebirths

10

�TABLE 3.

Year

INCIDENCE OF STILLBIRTHS, HYDATIDIFORM MOLES AND
CONGENITAL MALFORMATIONS, BY YEAR

Livebirths

Stillbirths
WT. Rate*

No.

Moles
Rlfte*

Malformations
No7 Rate*

3,258
25,106
24,355
21,326
33,060
39,009
46,821
53,013
69,844
73,188
84,478
6,629

TOTAL

125
1,022
919
744
1,153
1,381
1,632
1,839
2,159
2,288
2,675
229

38.3
40.7
37.7
34.9
34.9
35.4
34.8
34.7
30.9
31.3
31.2
34.5

9
186
164
134
207
249
318
323
359
381
519
' 17

2.8
7.4
6.7
6.3
6.3
6.4
6.8
6.1
5.9
5.2
6.1
2.6

11
184
121
148
187
210
202
320
276
334
341
17

3.4
7.3
5.0
6.9
5.6
5.4
4.3
6.0
3.9
4.6
4.0
2.6

480,087

1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970

16,166

33.7

2,866

6.0

2,355

4.9

*per 1000 livebirths

TABLE 4.

Area

COMPARISON OF STILLBIRTHS, MOLES AND MALFORMATIONS
BY GEOGRAPHIC AREA

Livebirths

Stillbirths
Ro~IRate*

Moles
No;

Malformations
NoT Rate*

Capital
Coastal
Interior
Delta

322,149
62,972
30,761
64,205

10,368
2,371
1,232
2,195

32.5
38.6
40.0
34.3

2,134
240
128
364

6.6
3.8
4.2
5.7

1,900
192
93
170

5.8
3.0
3.0
2.6

TOTAL

480,087

16,126 33.7

2,866

6.0

2,355

4.9

*per 1000 livebirths

11

�TABLE 5.

TYPE, NUMBER, DISTRIBUTION, AND RATE OF CONGENITAL
MALFORMATIONS OBSERVED IN 480,087 LIVEBIRTHS

Type

Not specified
Anencephaly
Cleft lip/palate
Hydrocephaly
Clubfoot
Ventre batracien**
Monster
Umbilical
Achondroplasia
Polydactyly
Abnormal genitalia
Spina bifida
Evisceration
Hermaphrodite
Imperforate anus
Tumor
Ascites
Siamese twins
Malformation of legs
Large abdomen
Malformation of hands
Microcephaly
Syndactyly
Others (specified)
TOTAL

Number

Percent of Total

935
525
452
136

39.7
22.3
19.2
5.8
3.5
3.2
1.8
0.5
0.6
0.3
0.3
0
0
0
0
0.2
0.2
0 .1
0 .1
0 .1
0 .1
0 .1
0 .1
0.6

81
76
42
11
13
8
8
8
7
6
6
5

4
3
3
3
3
3
2
15

100.0

2,355

*per 1000 livebirths
**Enlarged abdomen with or without ascites

12

Rate*
1.95
1.09
0.94
0.28
0.17
0.16
0.09
0.02
0.03
0.02
0.02
0.02
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.03
4.91

�TABLE 6. COMPARISON OF BIRTH EVENTS DATA IN LIGHT-SPRAYING TO
HEAVY-SPRAYING YEARS, COUNTRYWIDE AND BY GEOGRAPHIC AREAS

Light^Spraying (1960-65)f
Heavy-Spraying (1966-69)
N o T R a t e
N o . R a t e *
Countrywide
Livebirths
Stillbirths
Moles
Malformations

189,677
6,851
1,258
1,052

36.1
6.6
5.5

280,523
8,961
1,582
1,271

32.0
5.6
4.5

Coastal Plain
Livebirths
Stillbirths
Moles
Malformations

12,580
366
20
27

29.1
1.6
2.1

47,347
1,892
211
148

40.0
4.4
3.1

Interior
Livebirths
Stillbirths
Moles
Malformations

7,052
360
39
34

51.0
5.5
4.8

21,619
794
85
54

36.7
3.9
2.5

Capital
Livebirths
Stillbirths
Moles
Malformations

151,726
5,641
1,141
965

37.2
7.5
6.4

167,165
4,602
984
924

27.5
5.9
5.5

18,319
484
58
26

26.4
3.2
1.4

44,392
1,673
302
145

37.4
6.8
3.3

Delta
Livebirths
Stillbirths
Moles
Malformations

*per 1000 livebirths

13

�TABLE 7. COMPARISON OF STILLBIRTH, MALFORMATION, AND
ANENCEPHALY RATES AMONG ASIAN POPULATIONS

Period

No. Births

Stillbirth
Rate*

Hsu
Stevenson

1951-53
1961-64

32,176
9,872

13.8

11.5

0.56
1.3

Sanghvi
Kolah
Stevenson
(Bombay)
Stevenson
(Calcutta)

1946-55
1960-63
1961-64

76,763
29,553
39,498

25.9
43.7

14.0
8.6

0.8
0.9
1.5

1961-64

19,191

46.2

3.0

0.3

Indonesia

Suharjono

1962-67

15,018

-

5.7

1.0

Japan

Neel

1948-54

64,569

-

10.2

0.6

Malaysia

Stevenson

1961-64

15,937

25.2

10.4

1.0

Philippines

Jongco
Abad-Vasquez
Stevenson

1962-63
1961-63
1961-64

46,025
28,663
29,669

15.0
20.6

5.6
12.8
8.4

G.8
0.6
0.5

Singapore

Stevenson

1961-64

39,683

12.3

8.6

0.5

Taiwan

Wei

1955-62

14,834

-

8.7

1.2

Thailand

Siriraj Hosp.

1966

14,332

-

47.8**

0.4

Vietnam

Cutting

1960-65
1966-69

180,884
249,779

36.1
32.0

5.5
4.5

1.1
1.0

Country
Hong Kong
India

Author

*per 1000 livebirths
**A11 malformations, major and minor

Malformation
Rate*

Anencephaly
Rate*

�TABLE 8.

COMPARISON OF HYDATIDIFORM MOLE RATES
AMONG ASIAN POPULATIONS

Author

Rate**

Hong Kong

King*

1.8

Japan

Hasegawa*

4.3

Philippines

Acosta-Sison*

5.9

Taiwan

Wei*

8.0

Vietnam

Cutting 1960-65
1966-69

6.6
5.6

Country

*as reported by Marquez-Montes, et al.
**per 1000 livebirths

TABLE

9.

LONG DIEN DISTRICT HOSPITAL

Stillbirths
Rate

Year

Livebirths

No.

1962
1963
1964
1965
1966
1967
1968
1969
1970

701
101
298
747
656
601
610
508
153

1
1
3
10
8
6
3
3
3

1.4
9.9
10.0
13.4
12.2
10.0
4.9
5.9
19.6

38

8.7

TOTAL

(1/3)

4,375

*A11 rates are expressed per 1000 livebirths

15

Moles

0
0
0
0
0
0
0
0
0

Malformations
Rate*
NoT

2
0
0
2
1
1
2
0
0

2.8
2.7
1.5
1.7
3.3

1.8

�TABLE 10.

BARIA PROVINCIAL HOSPITAL

Stillbirths
Rate

Year

Livebirths

No.

1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970

588
1,368
1,353
1,303
1,169
1,334
1,444
1,659
1,391
1,562
372

27
38
32
27
39
41
36
32
32
41
11

13,543

356

(1/3)

TOTAL

TABLE 11.

Year

Livebirths

1964
1965
1966
1967
1968
1969
1970

1,507
2,111
2,113
2,767
3,168
3,615

TOTAL

(1/4)

Moles

No.

Malformations
No.
Rate

3
2
9
3
6
1

0.8
0.8
2.2
1.3
5.4
2.2
3.8
2.7

3
4
3
1
6
3
3
2
5
4
2

5.1
2.9
2.2
0.8
5.1
2.2
2.0
1.2
3.6
2.5
5.4

26

1.9

36

2.7

0
0
0

46
28
24
21
34
31
25
19
23
26
30

1

1

26.2

NHA TRANG PROVINCIAL HOSPITAL

Stillbirths
Rate
No.

508

61
86
132
149
146
146
22

40
41
62
50
46
37
43

15,789

742

47.0

No.

Moles
Rate

Malformations
No.
Rate

5
10
4
12
22
41
6

16

1.9
4.3
6.9
11.3

11.8

1
2
14
5
8
10
6

100

6.3

46

3.2
4.7

0.7
0.9
6.7
1.8
2.5
2.8

11.8

2.9

�TABLE 12.

Livebirths

QUI NHON PROVINCIAL HOSPITAL

Stillbirths
No.
Rate

0
7
6
7

1,178
1,491
1,772
1,749

60
79
133
116

51
52
75
62

6,190

TOTAL

388

62.7

TABLE 13 .

Livebirths

1966
1967
1968
1969
1970

Moles
No .
R~ate

4.7
3.4
4.0

20

3.2

Year

1967
1968
1969
TOTAL

3.4

TUY PHUOC DISTRICT HOSPITAL

Stillbirths
No .
Rate

Moles
No.
R~ate

7
15
21
11
15

1
0
0
0
0

3.7

14.3

1

Malformations
Rate
No7

0.8

272
260
331
260
67

2
4
7
3
1

1,190

17

TABLE 14.

TOTAL

(1/3)

21

0
0
1
0
0

DA NANG PROVINCIAL HOSPITAL

0.8

Malformations
Rate
RoT

Stillbirths
No.
Rate

Moles
No.
R~ate

4,620
4,347
4,094

174
198
185

38
46
45

16
19
21

3.5
4.4
5.1

13
14
10

13,061

557

42.7

56

4.3

37

Livebirths

17

3.0

2.8
3.2
2.4

�TABLE 15.

Year

Livebirths

HUE PROVINCIAL HOSPITAL

Stillbirths
No.
Rate

Moles
No.
Rate

Malformations
No.
Rate

1968
1969
1970 (1/3)

1,156
2,837
1,278

51
132
73

44
46
57

14

12.1

20
2

7.0
1.6

9
21
9

7.8
7.4
7.0

TOTAL

5,271

256

48.5

36

6.8

39

7.4

TABLE 16.

Year

Livebirths

HUE DISTRICT HOSPITALS

Stillbirths
Rate
NoT

Cua-Huo
1969
1970 (1/3)

560
178

Thanh-Noi
1969
1970 (1/3)

174
212

Tay-Loc
1967
1968
1969
1970 (1/3)

783
694
675
277

6
2
4
3

7.6
2.8
5.9
10.8

3,553

17

4.7

Moles
No.
R~ate

TOTAL

2
0

3.5

1.7

Malformations
NoT
Rate

1
0

1.7

0
0

18

1.2
1.4
1.5

0.3

1.1

�TABLE 17.

TAY NINH PROVINCIAL HOSPITAL

Livebirths

NoT

Stillbirths
Rate

Moles
No.
Rate

1967(3/4)
1968
1969

1,818
2,563
2,566

55
109
99

30
43
39

8
17
19

4.4
6.6
7.4

TOTAL

6,947

263

37.9

44

6.3

Year

TABLE 18.

Year

Livebirths

Malformations
No.
Rate

2.2
1.2
1.2

10

1.4

PLEIKU PROVINCIAL HOSPITAL

Stillbirths
N &lt; T R a t e

1968
1969
1970 (1/4)

840
1,304
344

20
36
13

24
28
38

TOTAL

2,488

69

27.7

19

Moles
No"Rate
4
2
0

4.7
1.5

2.4

Malformations
No.
Rate
2
0
0

2.3

0.8

�TABLE 19,

BAN ME THUOT PROVINCIAL HOSPITAL

Stillbirths
Rate

Livebirths

No.

1966
1967
1968
1969
1970 (1/3)

1,201
1,417
1,227
1,292
671

56
57
43
60
37

TOTAL

5,808

253

Year

TABLE 20.

Year

1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970 (1/2)
TOTAL

0
0
0
9
3

47
40
35
46
55

43.6

Stillbirths
Rate

No.

236
221
232
259
760

5
3
3
3
18

4,658

Malformations
Rate

No.

6.9
4.5

3.9

12

2.1

0.9

DA LAT PROVINCIAL HOSPITAL - PAYING

Livebirths

276
624
679
947
424

Moles
No. Rate

21
14
13
12
24

(data missing from
10
36
15
24
12
18
12
13
12
28

93

20.0

20

Moles
W. R~ate

No.

2.6

1
0
0
0
2

hospital)
0
1
1.6
1
1.5
1
1.1
0

0
1
0
3
1

1.1

Malformations
Rate

4.2
2.6
_
1.6
3.2
2.4

1.7

�TABLE 21.

Year

1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970 (1/2)
TOTAL

DA LAT PROVINCIAL HOSPITAL - NONPAYING

Livebirths

Stillbirths
Rate

No.

1,376
651
10,860

TABLE 22.

12
5
4
5
5
6
7
5
3
8
1

17.1

6.3
4.7
5.1
5.3
5.6
6.4
4.4
2.4
5.8
1.5

2
5
8
9
5
2
8
3
11
11
4

2.8
6.3
9.4
9.1
5.3
1.9
7.3
2.6
8.7
8.0
6.1

51.0

554

943
1,067
1,092
1.136
1,261

61

5.6

68

6.3

TU-DU MATERNITY HOSPITAL, SAIGON

Stillbirths
Rate

Year

Livebirths

No.

1960
1961
1962
1963
1964
1965
1966
1967
1968
1969

12,350
11,294
11,482
12,795
17,099
18,747
19,429
23,776
26,675
28,803

535
519
517
500
637
705
691
626
699
829

182,450

6,258

TOTAL

Malformations
Rate

No.

72
72
48
66
38
73
51
42
46
35
25

51
57
41
65
36
78
56
48
58
48
16

704
793
852
985

Moles
Rate

No.

43
46
45
39
37
38
36
26
26
29

34.8

21

Moles
NcTKate

Malformations

No.

Rate

145
140
122
139
182
195
189
187
188
196

12
12
11
12
11
10
9.7
7.9
7.0
6.8

138
87
123
125
142
115
166
125
138
144

11
7.7
11
9.8
8.3
6.1
8.5
5.3
5.2
4.9

1,683

9.2

1,303

7.1

�TABLE 23.

HUNG VUONG MATERNITY HOSPITAL, SAIGON

Stillbirths
Rate

Livebirths

No.

1959*
1960
1961**
1962**
1963
1964
1965
1966
1967
1968
1969

3,258
11,228
4,608
238
11,088
8,693
10,665
11,349
13,667
12,257
12,549

125
404
133
6
412
366
360
366
397
308
342

TOTAL

99,600

Year

3,219

Moles
Rate

No.

Malformations
Rate

No.

41
37
29
25
37
43
34
32
29
25
27

9
29
16
0
46
44
52
50
64
38
59

2.8
2.8
3.5
4.2
5.1
4.9
4.4
4.7
3.1
4.7

11
40
14
2
43
40
57
79
78
72
63

3.4
3.6
3.0
8.4
3.9
4.6
5.3
7.0
5.7
6.0
5.0

32.3

07

4.1

499

5.0

* Opened September 1959.
** Records borrowed and lost for this period.

TABLE 24. BIEN HOA PROVINCIAL HOSPITAL

Stillbirths
Rate

Moles
NoT" Rate

Year

Livebirths

No.

1961
1962
1963
1964
1965
1966
1967
1968
1969

4,166

5,058

142
108
112
96
89
84
88
91
81

34
25
26
22
21
21
19
19
16

1
6
11
5
8
1
1
7
4

40,099

891

21.8

44

TOTAL

4,344

4,331
4,371
4,227
4,056
4,735

4,811

Malformations

No.

Rate

0.2
1.4
2.5
1.1
1.9
0.2
0.2
1.5
0.8

11
7
5
8
8
12
12
21
14

2.6
1.6
1.2
1.8
1.9
3.0
2.5
4.4
2.8

1.1

98

2.4

�TABLE 25. CAI RANG DISTRICT HOSPITAL

Livebirths

Year

1969
1970

Stillbirths
Rate

No.

Moles
Rate

No.

Malformations
Rate

No.

TOTAL

551
189

11
3

20
16

1
0

1.8
-

1
0

1.8
-

740

(1/3)

14

18.9

1

1.3

1

1.3

TABLE 26. CAN THO PROVINCIAL HOSPITAL

1965
1966
1967
1968
1969
TOTAL

Stillbirths
Rate

Livebirths

Year'

(1/2)

No.

1,769
3,650
3,697
3,498
3,442

93
163
224
210
183

53
47
60
60
53

16,056

873

54.4

Moles
Rate

No.
34
55
37
54
74
254

19
15
10
15
22
15.8

Malformations
Rate

No.

5
25
20
32
20

2.8
6.8
5.4
9.1
5.8

102

6.4

TABLE 27. MY THO PROVINCIAL HOSPITAL

Stillbirths
Rate

Livebirths

No.

3,922

172

43.8

23

Moles
No. Rate

41

10.4

Malformations
Rate

No.
18

4.6

�TABLE 28. KIEN HOA PROVINCIAL HOSPITAL

Year

1964
1965
1966
1967
1968
1969
1970
TOTAL

Livebirths

(1/3)

Stillbirths
Rate

No.

Moles
No. Rate

Malformations
No.
Rate

1,793
3,079
3,269
3,564
2,680
3,201
1,305

66
75
110
108
90
89
35

37
24
34
30
34
28
27

1
3
10
6
3
6
4

0.6
0.9
3.1
1.7
1.1
1.9
3.1

3
6
5
4
3
3
2

1.7
1.9
1.5
1.1
1.1
0.9
1.5

18,891

573

30.3

33

1.7

23

1.2

TABLE 29. TAN AN PROVINCIAL HOSPITAL

Stillbirths
Rate

Year

Livebirths

No.

1961
1962
1963
1964
1965
1966
1967
1968
1969

1,905
2,124
2,198
2,376
3,075
3,028
3,229
3,228
3,433

27
36
33
59
95
65
91
76
81

24,596

563

TOTAL

Moles
No. Rate

Malformations
Rate

No.

14
17
15
28
31
21
29
23
23

1.0
0.9
2.3
1.7
2.3
1.3
1.8
0.6
0.9

3
4
3
2
6
4
2
2

1.4
1.8
1.3
0.6
2.0
1.2
0.6
0.6

22.9

24

2
2
5
4
7
4
6
2
.3

35

1.4

26

1.1

�HUE
DA NANG

TUY PHUOC
QUI NHON

NHA TRANG

DALAT

BIEN HOA
SAIGON
LONG DIEN

TAN AN
MYTHO

KIENHOA

LOCATION OF HOSPITALS VISITED

25

Figure 1

�NUMBER OF LIVE BIRTHS COLLECTED, BY YEAR
REPUBLIC OF VIETNAM, I960 - 1969

80
CAPITAL AREA

70

OUTSIDE CAPITAL AREA

60

o
o
3 50

m 40
UJ

30

20

10

I960 61

62

i n.
ii
63

64

65

66

67

68

69

YEAR
26

Figure 2

�COUNTRYWIDE INCIDENCE OF STILLBIRTHS,MALFORMATIONS,
AND MOLES PER 1000 LIVE BIRTHS PER YEAR

1960-1969

• - STILLBIRTH
x - MALFORMATION
o - MOLE
CC

§40
\

O

o
O

UJ 35
z
UJ
Q

O

^ 30

10

I960 61

62

63

64 65 66
YEAR
27

67 68 69

70

Figure 3

�ACRES SPRAYED BY YEAR, REPUBLIC OF VIE I NAM
1960-1969

O
O
O
0~
O
O

O
UJ

o:
a.
&lt;r
o

0
I960 61

62 63

64

65

66 67

68

69

YEAR
28

Figure 4

�REFERENCES

1. Bionetics Research Laboratories: Evaluation of the Teratogenic Activity of Selected
Pesticides and Industrial Chemicals in Mice and Rats. Vol. Ill, 1969
2. U. S. Department of the Army, Training Circular. TC-3-16. Employment of Riot
Control Agents, Flame, Smoke, Antiplant Agents, and Personnel Detectors in Counterguerrilla Operations, April 1969
3. U. S. Congress. House. Committee on Science and Astronautics. Report to the
Subcommittee on Science, Research and Development. Prepared by the Science Policy
Research Division, Legislative References Service, Library of Congress (Committee
Print) Serial F. Aug 8, 1969. 91st Cong. 1st Sess. US Govt. Printing Office, 1969.
p. 15
4. Penrose AC: Genetics of Anencephaly. J Ment Del Res 1:4-15, 1957
5. Stevenson AC, Johnson HA, Stewart MIP, Golding DR: Congenital
Malformations: A Report of a Study of Series of Consecutive Births in 24 Centers.
Bull WHO 34:Suppl 9, 1966
6. Kolah PJ, Master PA, Sanghvi LD: Congenital Malformation and Perinatal
Mortality in Bombay. Ame J Obstet Gynec 97:400-406, 1967
7. Suharjono, Sunoto, Sudijonto, Sugiono M, Sutedjo: The incidence of Congenital
Malformation in the Dr Tjiptomangunkusumo General Hospital, Jakarta, 1962-1967.
Paediatrica Indonesians 9:9-12, 1969
8. Neel JV; A Study of Major Congenital Defects in Japanese Infants. Amer J Hum
Genetics 10:398-445, 1958
9. Jonco AP, Carlos FC, Fernadez EV: Congenital Anomalies in Filipinos. J Philippine
Med Assn 41:57-60, 1965
10. Abad-VasquezL, Pascual-Poblete E, Jonco A: Congenital Malformation in the
Newborn. J Philippine Afed Assn 41:294-303, 1965
11. Wei PY, Chen YP: Congenital Malformations, Especially Anencephalus, in Taiwan.
Amer J Obstet Gynec 91:870-876, 1965
12. Annual Report, Siriraj Hospital, Bangkok, Thailand, 1966
13. Marquez-Montes H, de la Vega GA, Robles M, Bolio-Cicero A: Epidemiology and
Pathology of Hydatidiform Mole in the General Hospital of Mexico. Amer J Obstet
Gynec 85:856-864, 1963

29

GPO 903.233

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                  <text>Alvin L. Young Collection on Agent Orange</text>
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                  <text>&lt;p style="margin-top: -1em; line-height: 1.2em;"&gt;The Alvin L. Young Collection on Agent Orange comprises 120 linear feet and spans the late 1800s to 2005; however, the bulk of the coverage is from the 1960s to the 1980s and there are many undated items. The collection was donated to Special Collections of the National Agricultural Library in 1985 by Dr. Alvin L. Young (1942- ). Dr. Young developed the collection as he conducted extensive research on the military defoliant Agent Orange. The collection is in good condition and includes letters, memoranda, books, reports, press releases, journal and newspaper clippings, field logs and notebooks, newsletters, maps, booklets and pamphlets, photographs, memorabilia, and audiotapes of an interview with Dr. Young.&lt;/p&gt;&#13;
&lt;p&gt;For more about this collection, &lt;a href="/exhibits/speccoll/exhibits/show/alvin-l--young-collection-on-a"&gt;view the Agent Orange Exhibit.&lt;/a&gt;&lt;/p&gt;</text>
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      <description>A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.</description>
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        <element elementId="52">
          <name>Box</name>
          <description>The box containing the original item.</description>
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            <elementText elementTextId="8748">
              <text>031</text>
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          <name>Folder</name>
          <description>The folder containing the original item.</description>
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            <elementText elementTextId="8750">
              <text>0579</text>
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          <name>Series</name>
          <description>The series number of the original item.</description>
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              <text>Series III Subseries I</text>
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        <name>Dublin Core</name>
        <description>The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.</description>
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          <element elementId="39">
            <name>Creator</name>
            <description>An entity primarily responsible for making the resource</description>
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              <elementText elementTextId="8743">
                <text>Cutting, Robert T.</text>
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                <text>Tran Huu Phuoc</text>
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                <text>Joseph M. Ballo</text>
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              <elementText elementTextId="8746">
                <text>Michael W. Benenson</text>
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                <text>Charles H. Evans</text>
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          <element elementId="41">
            <name>Description</name>
            <description>An account of the resource</description>
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                <text>&lt;strong&gt;Corporate Author: &lt;/strong&gt;U. S. Department of Defense</text>
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          <element elementId="40">
            <name>Date</name>
            <description>A point or period of time associated with an event in the lifecycle of the resource</description>
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                <text>1970-12-01</text>
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          </element>
          <element elementId="50">
            <name>Title</name>
            <description>A name given to the resource</description>
            <elementTextContainer>
              <elementText elementTextId="8752">
                <text>Congenital Malformations, Hydatidiform Moles, and Stillbirths in the Republic of Vietnam, 1960-1969</text>
              </elementText>
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          </element>
          <element elementId="49">
            <name>Subject</name>
            <description>The topic of the resource</description>
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              <elementText elementTextId="8754">
                <text>health effects</text>
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                <text>human exposure</text>
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              <elementText elementTextId="8756">
                <text>congenital birth defects</text>
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          </element>
        </elementContainer>
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    </elementSetContainer>
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      <tag tagId="1">
        <name>ao_seriesIII</name>
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  </item>
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