2688 primary school pupils and sencondary school children in the whole of the country, aged 6-11 years old, living in mountain, plain, central and northern areas, southern. A high prevalence of gingivitis inflammation of 42,7- 71,4% was concluded in all age groups, higher in rural area than in urban and increasing with the age. There fore the programme of dental oral care for school children in the whole of country, including oral hygiene education must be promoted.
Gingivitis ; Child ; Vietnam ; Epidemiology

Study 4,203 bearing-age women who had used intrauterine devices (IUDs). Results: using IUDs is the most common contraceptive methods in Vietnam. Women used this method are usually in bearing-age and have more frequent intercourse (under 35 years old: 63.8%), have had baby (100%). 24.4% of them have used other methods. Factors affected IUDs acceptance are safe (40.5%), convenient (44.4%), easy to use (31.6%), and being provided information and counseling (84%).
Intrauterine Devices ; Epidemiology ; Vietnam ; Women

Through interviewing, discussing with the managers of the Population and family Planning boards and staffs of the contraceptive warehouses at provincial level, the author found that: There were many limitations in facilities and staffs at the contraceptive warehouses at provincial and districts levels. New contraceptive users increased fast from 2.7 million in 1995 to rough 3.7 million in 2001 and estimated 5.6 million of users in 2010. Demands of contraceptives needed to increase faster than the numbers of contraceptive method users. National budget provided only 16.7% of total contraceptive cost
Family Planning Services ; epidemiology ; Contraceptive Agents ; Vietnam

In 2002-2003 year period at HCM City Blood Transfusion and Hematology 8 cases of umbilical cord blood transplantation were performed.including 2 cases of lymphoid acute leukemia, 3 cases of myeloid acute leukemia, 3 cases of beta thalassemia. Among them, there were a case of HLA- identical blood and 7 cases of HLA-dismatched blood. After 36 months, 61,90% of cases were recovered survivals and after 24 months 71,43%
Stem Cell Transplantation ; Epidemiology ; Vietnam ; Cord Blood Stem Cell Transplantation

OBJECTIVES: In an epidemiologic study on the health impact of Agent Orange exposure, the valid estimation of exposure level is the most important step. Based on recent studies, we examined the correlation between exposure levels categorized by personal exposure estimates and serum 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD, Dioxin), exploring the possibility of utilizing the exposure level as a surrogate for the estimate of exposure to agent orange. METHODS: During the study period (Jan 1996-Feb 1996), blood specimens of 745 subjects taken randomly among 1,329 persons and kept frozen, were analyzed for 2,3,7,8-TCDD and six other dioxin congeners. The serum dioxin and congeners were measured in 1998 by CDC ,adjusted for serum lipids. We categorized the total exposure scores into five groups based on Agent Orange exposure data collected by interview and military records. Pearson and Spearman's correlation coefficients & multiple regression analysis were used to identify the relationship of the exposure level categorized with serum concentration of 2,3,7,8-TCDD, and six other dioxin congeners. RESULTS: Dioxin and the other congeners, except 1,2,4,6,7,8-HpCDD, showed significant correlations to exposure categories (p<0.005); 2,3,7,8-TCDD and OCDD showed positive correlations, whereas the other congeners did negative. The values of 2,3,7,8-TCDD differed according to exposure category and proportionally increased from the low exposure group to the high, a dose-response relationship, even after other possible confounding variables were adjusted for. In multiple regression analysis, age(beta=0.033), dioxin(beta=0.433), 1,2,3,7,8-PeCDD(beta=0.998), 1,2,3,4,7,8-HxCDD(beta=0.773), 1,2,3,6,7,8-HxCDD(beta=0.255), 1,2,3,7,8,9-HxCDD(beta=3.468), 1,2,3,4,6,7,8-HpCDD(beta=0.109) were found to be significantly related to the total exposure score(p<0.005). CONCLUSION: This study demonstrated that the use of such categorizations as a surrogate measure of agent orange exposure in identifying exposure degrees in a health impact study is valid.
Centers for Disease Control and Prevention (U.S.) ; Citrus sinensis* ; Confounding Factors (Epidemiology) ; Humans ; Military Personnel ; Tetrachlorodibenzodioxin ; Veterans* ; Vietnam*

Paragonimiasis is a food-borne parasitic zoonosis caused by infection with lung flukes of the genus Paragonimus. In Vietnam, research on Paragonimus and paragonimiasis has been conducted in northern and central regions of the country. Using a combination of morphological and molecular methods, 7 Paragonimus species, namely P. heterotremus, P. westermani, P. skrjabini, P. vietnamensis, P. proliferus, P. bangkokenis and P. harinasutai, have been identified in Vietnam. Of these, the first 3, P. heterotremus, P. westermani and P. skrjabini, are known to infect humans in other countries. However, in Vietnam, only P. heterotremus, found in some northern provinces, has been shown to infect humans. Even nowadays, local people in some northern provinces, such as Lai Chau and Yen Bai, are still suffering from P. heterotremus infection. In some provinces of central Vietnam, the prevalence and infection intensity of P. westermani metacercariae in freshwater crabs (the second intermediate hosts) are extremely high, but human cases have not been reported. Likewise, although P. skrjabini was found in Thanh Hoa Province, its pathogenicity to humans in Vietnam still remains uncertain. The results of molecular phylogenetic analyses of Vietnamese Paragonimus species provides new insights on the phylogeny and taxonomy of the genus Paragonimus. Comprehensive molecular epidemiological and geobiological studies on the genus in Vietnam and adjacent countries are needed to clarify the biodiversity and public health significance of the lung flukes.
Animals ; Humans ; Paragonimiasis/*epidemiology ; Paragonimus/classification/genetics/*isolation & purification ; Phylogeny ; Prevalence ; Sequence Analysis, DNA ; Shellfish/parasitology ; Vietnam/epidemiology

OBJECTIVES: The aim of this study was to investigate the association between Vietnam experience including exposure to military herbicides and cancer incidence in Korean Vietnam War veterans. METHODS: The cancer cases of 185 265 Vietnam veterans from January 1, 1992 to December 31, 2003 were confirmed from the Korea National Cancer Incidence Database. The age-adjusted incidence and standardized incidence ratios (SIRs) were calculated using the male population during 1992 to 2003 as a standard population. RESULTS: The age-adjusted overall cancer incidence per 100 000 person-years was 455.3 in Vietnam veterans. The overall cancer incidence was slightly yet significantly lower in veterans (SIR, 0.97; 95% confidence interval, 0.95 to 0.99) than in the general population. The overall cancer incidence in enlisted soldiers was not lower (SIR, 1.00), whereas that in officers was significantly lower (SIR, 0.87) than in the general population. The incidences of prostate cancer and T-cell lymphoma in all veterans, and lung cancer and bladder cancer in enlisted soldiers, and colon cancer and kidney cancer in non-commissioned officers, and colon cancer, kidney cancer, and prostate cancer in officers, were higher than in the general population. The SIR for overall cancer among Vietnam veterans rose from 0.92 for 1992-1997 to 0.99 for 1998-2003. CONCLUSIONS: The overall cancer incidence in Vietnam veterans was not higher than in the general male population. Vietnam veterans and military rank subcohorts experienced a higher incidence of several cancers, including prostate cancer, T-cell lymphoma, lung cancer, bladder cancer, kidney cancer, and colon cancer than the general population. The SIR for overall cancer increased over time in Vietnam veterans.
Adult ; Aged ; Aged, 80 and over ; Herbicides/poisoning ; Humans ; Incidence ; Male ; Middle Aged ; Neoplasms/*epidemiology ; Republic of Korea/epidemiology ; *Veterans ; *Vietnam Conflict

Adolescent ; Antibodies, Viral ; blood ; China ; epidemiology ; Female ; Humans ; Influenza A virus ; immunology ; Male ; Seroepidemiologic Studies ; Students, Medical ; Vietnam ; epidemiology ; Young Adult

The prevalence of foodborne trematode (FBT) metacercariae was investigated in fish from 2 localities of northern Vietnam in 2004-2005. Freshwater fish (9 species) were collected from local markets in Hanoi City (n=76) and Nam Dinh Province (n=79), and were examined for FBT metacercariae using the artificial digestion technique. Adult flukes were obtained from hamsters experimentally infected with the metacercariae at day 8 post-infection. Three (Haplorchis pumilio, Centrocestus formosanus, and Procerovum varium) and 6 (Haplorchis taichui, H. pumilio, C. formosanus, P. varium, Stellantchasmus falcatus, and Heterophyopsis continua) species of FBT metacercariae were detected in the 2 regions, respectively. Overall, among the positive fish species, H. pumilio metacercariae were detected in 104 (80.0%) of 130 fish examined (metacercarial density per infected fish; 64.2). C. formosanus metacercariae were found in 37 (40.2%) of 92 fish (metacercarial density; 14.7). P. varium metacercariae were detected in 19 (63.3%) of 30 fish (Anabas testudineus and Mugil cephalus) (metacercarial density; 247.7). S. falcatus metacercariae were found in all 10 M. cephalus examined (metacercarial density; 84.4). H. continua metacercariae (2 in number) were detected in 1 fish of Coilia lindmani. Morphologic characteristics of the FBT metacercariae and their experimentally obtained adults were described. The results have demonstrated that various FBT species are prevalent in northen parts of Vietnam.
Animals ; Cricetinae ; Fish Diseases/epidemiology/*parasitology ; Fishes ; Foodborne Diseases/parasitology ; Heterophyidae/cytology/*isolation & purification ; Humans ; Metacercariae/cytology/*isolation & purification ; Prevalence ; Trematode Infections/epidemiology/parasitology/*veterinary ; Vietnam/epidemiology

OBJECTIVETo survey the prevalence and risk factors of HSV-2 among Chinese and Vietnamese female sex workers (FSW) in the border county of Hekou, Yunnan Province, China.

METHODSA cross-sectional survey was conducted on demographics, sexual behavior, medical history, and drug use among FSWs. Laboratory samples were obtained to test for HSV-2 and other STIs such as HIV, Syphilis, Trichomonas vaginalis, Neisseria gonorrhoeae, Chlamydia trachomatis, Bacterial vaginosis, and Yeast infections. Cervicitis and genital warts were also diagnosed.

RESULTSOf the 345 FSWs who participated in this study, 112 (32.5%) were ethnic Chinese and 233 (67.5) were Vietnamese. Among FSWs in Hekou, the prevalence rates were 58.3% for HSV-2, 5.5% for HIV, and 4.1% for bacterial vaginosis (BV). Age<21 (OR: 0.5; 95% CI: 0.3, 0.8), duration of commercial sex work≤3 months (OR: 0.5; 95% CI: 0.3, 0.8), oral and vaginal sex with the last client (as opposed to only vaginal sex) (OR: 1.6; 95% CI: 1.0, 2.7), HIV (OR: 11.4; 95% CI: 1.5, 87.2), and bacterial vaginosis (BV) (OR: 5.6; 95% CI: 1.2, 26.9) were significantly correlated with HSV-2 infection.

CONCLUSIONMultivariate analysis showed that several factors were significantly correlated with the high prevalence of HSV-2 in FSWs in the border area between China and Vietnam. Further studies and interventions are needed for HSV-2 epidemiology in the border area.

Adolescent ; China ; epidemiology ; Cross-Sectional Studies ; Female ; Herpes Genitalis ; epidemiology ; Herpesvirus 2, Human ; isolation & purification ; Humans ; Risk Factors ; Sex Workers ; Vietnam ; epidemiology ; Young Adult