consequently,
children 4 to 5 years of age in the sample had not had the
opportunity to receive it during their first 6 months of
age. The National Immunization Program of the Brazilian
Ministry of Health stipulates that children receive the first
dose at two months and the second at four months. Thus,
diarrhea prevalence rates were compared for the subset of
children 6 to 24 months according to vaccination status