... median school education in Vietnam and Colombia, and 1~5 years of median school education in Thailand The self-reported mean household income per month is $351, $788, and $367 in Vietnam, Thailand, ... makers in three countries: Vietnam, Thailand, and Colombia In Vietnam, annual disease incidence is reported to be 145/100,000 population according to the national surveillance system in 2010[7] Because ... and 87% of the respondents in Vietnam, Thailand, and Colombia said that their children would likely contract dengue in the next five years In Vietnam and Thailand, about 28% of the respondents...