Early infection and asymptomatic spread of hepatitis A virus in a public child care center in Rio de Janeiro, Brazil: should attending children under two years of age be vaccinated?

Morais LM, de Paula VS, Arantes MR, Oliveira MLA, Gaspar AMC. Early infection and asymptomatic spread of hepatitis A virus in a public child care center in Rio de Janeiro, Brazil: should attending children under two years of age be vaccinated?. Mem Inst Oswaldo Cruz. 2006; 101(4): 401-5.