Rectovaginal Colonization with Serotypes of Group B <i>Streptococci</i> with Reduced Penicillin Susceptibility among Pregnant Women in León, Nicaragua oleh Teresa Alemán, Nadja A. Vielot, Roberto Herrera, Reymundo Velasquez, Tatiana Berrios, Christian Toval-Ruíz, Evert Téllez, Andres Herrera, Samir Aguilar, Sylvia Becker-Dreps, Neil French, Samuel Vilchez