Engelen, M.N.

pneumococcal group vaccine children conjugate carriage pneumoniae serotype ndcc group cluster dcc group sampling dates dcc attendees pneumococci streptococcu valent clone strain netherland nasopharyngeal study sampling antibiotic infection genotype attendee resistance analysis pediatr streptococcus pneumoniae 259 children ndcc children pneumococcal conjugate vaccines population colonization pneumococcal conjugate vaccine pattern result pneumococcal epidemiology network spread center coverage vaccine coverage nasopharyngeal carriage rfel types 1999. cluster size country pneumococcal colonization microbiol risk groups herman distribution vaccination epidemiology erythromycin restriction fragment end disease tetravalent pneumococcal vaccines 1998. middle ear infections nonvaccine serotypes carriage turnover ndcc groups penicillin-resistant streptococcus pneumoniae 16 dccs clone taiwan 19f health penicillin amsterdam 1997. van belkum day-care centers streptococcus pneumoniae strains factor 276 children infant immunogenicity dagan sluijter