Population-based surveillance for diarrhea and shigellosis
was conducted in Kaengkhoi District, central Thailand
between 2000 and 2002 to estimate the shigellosis burden
in this part of Thailand.2 During the first two years of surveillance,
culture-confirmed shigellosis cases and healthy
matched controls were enrolled in a case-control study. Data
were collected on exposure to potential risk factors such as
water supply and sanitation, hygiene behavior, and socioeconomic
status. This paper reports potential risks adjusted
for exposure to potential confounding factors