| impact of routine hepatitis b immunization on the prevalence of chronic hepatitis b virus infection in the marshall islands and the federated states of micronesia. | to evaluate the impact of routine hepatitis b (hb) vaccination on the prevalence of chronic hepatitis b virus (hbv) infection among children in pacific island countries where hbv infection was highly endemic, we conducted hb serosurveys during 2000 to 2007 among women of childbearing age born before implementation of hb vaccination and among children born after its implementation. | 2010 | 19841605 |