title: High prevalence of serotype 11B of Streptococcus pneumoniae isolated in the nasopharynx of Mexican children.
authors.forename: Jesus
authors.initials: J
authors.lastname: Reyna
authors.forename: Ana E
authors.initials: AE
authors.lastname: Limon
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008800:Mexico; D009305:Nasopharynx / Q000382:microbiology*; D013045:Species Specificity; D013296:Streptococcus pneumoniae / Q000145:classification / Q000302:isolation & purification*