Serological surveillance of dengue hemorrhagic fever epidemics in 19 Southern provinces of Vietnam in the year 2001

ABSTRACT

In the year 2001, the Arbo virus Laboratory had received Dengue hemorrhagic fever samples from 19 provincial center for Preventive Medicine to isolate virus. 83 dengue viruses of 4 type were detected. Among them, the two main germs were dengue 2 and dengue 4. Viruses were detected mainly in infected children with hemorrhagic fever of I-II degree. Dengue 2 was the causative agent of DHF of I-III degree with a higher number of cases than other serotypes. 4.046 sera samples was examined by Mac ELISA, among them 56.13% was (+). However in Ma-ELISA(+) regions, there is no effective methods for dengue control.