Objective. To investigate a nasopharyngeal carriage and serotypes of S. pneumoniae in children aged 3 to 6 years from day-care centers in Smolensk.
Materials and Methods. A total of 245 isolates of S. pneumoniae from 1027 nasopharyngeal swabs from healthy children attending day-care centers was tested. Identification of S. pneumoniae was performed according morphological, cultural and antigenic characteristics (Slidex pneumo-Kit, bioMeriеux, France), susceptibility to optohin and bile. Extraction of S.