Seroprevalence of Poliovirus Antibodies Among Children in a Dominican Community -- Puerto Rico, 2002. - Segarra, E.; Garcia-Guadalupe, Y.; Rullan, J.; Alexander, L.; Murphy, T.; Alexander, J.; Seward, J.; Thames, C.; Pallansch, M.; Alvarado-Ramy, F. (MMWR: Morbidity & Mortality Weekly Report, 2005)