Togavirus infection in rural Thailand.

Hemagglutination inhibition tests for antibody against chikungunya virus and the four dengue viruses were performed on a rural Thai village population. The 50% and 90% prevalence indices fell at about ages 3 and 15 for dengue virus exposure. This is considerably earlier exposure than comparable urban populations. The prevalence of chikungunya virus antibody was also age related with 50% prevalence at about age 45.

Maternal carrier rates of potentially pathogenic organisms in Bangkok, Thailand.

One hundred and four healthy women delivering infants at the Royal Thai Army Hospital, Bangkok, were sampled by rectal swab for the laboratory isolation and identification of enteric bacteria of medical importance. Seventeen percent of these women had significant isolates as Salmonella, Shigella and Vibrio species. Serotypically enteropathogenic Escherichia coli were also identified in 31% of the mothers.