| nasopharyngeal penicillin-resistant streptococcus pneumoniae strains among young children in japan. | a rapid increase of penicillin resistance in streptococcus pneumoniae has recently been reported in most areas of the world. penicillin-resistant s. pneumoniae and other resistant bacteria are the principal causes of recurrent acute otitis media (aom). penicillin-resistant s. pneumoniae was examined so that we could investigate the bacteriologic and clinical interpretations of nasopharyngeal flora from healthy children. | 2002 | 11981394 |