Seroepidemiology of herpes simplex virus in Yogyakarta, Indonesia

Seroepidemiology of herpes simplex virus and restriction endonuclease cleavages analysis of herpes simplex virus type 2 in Okinawa

A seroepidemiologic study of herpes simplex virus (HSV) in Okinawa was performed. A total of 423 serum samples were collected from all over Okinawa, and the positivity rate of antibody against HSV was measured using a passive hemagglutination method. The sero-positive rate for HSV in age groups of over 40 years was 100%. Seven HSV type 2 (HSV 2) isolates were obtained in Okinawa, and DNA preparations from Vero cells infected with the isolates were analyzed using five restriction endonucleases: Bam HI, Hind III, Kpn I, Bgl II and Eco RI. Variations in the genomic region were demonstrated in five of the isolates. Such variations have not been reported previously in HSV 2 in mainland Japan. This is the first report of a seroepidemiologic study of HSV and restriction endonuclease cleavage analysis of HSV 2 in Okinawa, is a subtropical island where HSV is endemic.

Seroepidemiology of herpes simplex virus type 1 in Yanji, Jilin, China

Sera from 158 individuals in Yanji, Jilin, China, were tested for antibodies to herpes simplex virus type 1 (HSV-1) by the passive hemagglutination method. Age-specific incidence rates for antibodies to HSV-1 were calculated. For sera from persons in the age group 10 years or less, the positive rate was 54% but in the age group higher than 10 years, it was more than 91% (P less than 0.01). In the part of China surveyed, primary HSV-1 infection occurred in early generation before about age 10. In children, the positive rate in the Han race was significantly higher than that in the Korean race (P less than 0.05).