Changes in results of Japanese encephalitis (JE) serodiagnosis in Northern Vietnam, 1998

ABSTRACT

During the 1998 Japanese Encephalitis epidemic in Northern Vietnam the authors have examined 402 patients which were clinically diagnosed as "acute encephalitis syndrome". The IgM anti JE was evidenced in only 132 cases. The seropositivity is patients under 5 years of age was 33.0 - 42.1% in 1998, compared with 64.2 - 75.7% during the period of 1989 - 1995.