In 1997, a big outbreak of DF/DHF occurred in the South of Viet Nam, especially in 3 provinces: Tra Vinh, Ca Mau and Kien Giang. Morbidity and mortality of the disease is highest in these provinces. Although ULV insecticide spray was carried out several times during the year, DF/DHF situation was not improved. Result of dengue vector surveillance shows that Breteau index of Ae.aegypti was from 5 to 11 times higher than dengue transmitting risk, 83-100% houses infecting with Ae.aegypti larvae. Key breeding sites of the mosquitoes were not affected by control activities are the main reason leading to persistence of DF/DHF in the areas.
Dengue ; epidemiology

An inquiry was conducted in HIV/AIDS cases and AIDS deaths in 21 sentinel provinces in the period of 1999-2001. In An Giang, Kien Giang provinces, sex female workers underwent interview, intervention, blood examination,… Results showed an increasing tendence of HIV with complex evolution in morphology, in infective objects, in age. There were considerable defferences between various region. The incidence in male was 85.73% and female 14.24%. Among male HIV infected, the incidence in North was higher than in South regions. 61.9% of infections were drug users and the incidence was difference between various locations. There was a tendence of raising of sexual transmitted infection and the prostitutes were rather high risk transmitted people with their low knowlegde on HIV/AIDS, on STD, the prevention ways, low rate of condom use. After intervention there was an enhance of their user of these measures
epidemiology ; HIV ; Acquired Immunodeficiency Syndrome

42 cases of death due to hemorrhagic fever in the year 2002 showed that: they were mainly (90.5%) in South provinces, mainly at the age under 15 (90.5%). The most died within 48 hours after the admission into hospital (73.8%), 26.2% after 3nd day and 92.2% within 5-6 days after the recovery. 85.7% of deaths were at commune level and provincial level. Hemorrhagic common symptoms were usually: blood vomitting (47.6%), hemorrhagic points (42.9%), nasal hemorrhagic 47.6%, gengive hemorrhage 16.7% and erythema (11.9%)
Hemorrhagic Fevers, Viral ; Mortality ; Death