Mercado, E.H.; Egoavil, M.; Horna, S.G.; Torres, N.; Velásquez, R.; Castillo, M.E.; Chaparro, E.; Hernández, R.; Silva, W.; Campos, F.E.; Sáenz, A.; Hidalgo, F.; Letona, C.; Valencia, A.G.; Cerpa, R.; López-de-Romaña, B.; Pando, J.; Torres, B.; Castillo, F.; Calle, A.; Rabanal, S.; Ochoa Woodell, Theresa Jean
(Instituto Nacional de Salud, 2012)
Objectives. To determine the carriage rate and serotype distribution of Streptococcus pneumoniae in the nasopharynx of healthy children younger than 2 years prior to the universal use of the pneumococcal conjugate vaccines ...