Pneumococcal pspA sequence types of prevalent multiresistant pneumococcal strains in the United States and of internationally disseminated clones.

ABSTRACT: In a recent genotypic survey of beta-lactam-resistant pneumococci recovered in different areas of United States during 1997, eight clonal types that each represented 3 to 40 isolates accounted for 134 of 144 isolates (G. Gherardi, C. Whitney, R. Facklam, and B. Beall, J. Infect. Dis. 181:216-229, 2000). We determined the degree of pspA gene diversity among these 134 isolates and for 11 previously characterized internationally disseminated multiresistant strains. Thirty-four different pspA restriction profiles were determined for an amplicon encompassing the variable portion of the structural gene that encodes the surface-exposed domain of PspA and a variable-length proline-rich putative cell wall-associated domain. These restriction profiles closely correlated with those of 33 different ps

SUBMITTER: Beall B 

PROVIDER: S-EPMC87453 | biostudies-literature | 2000 Oct

REPOSITORIES: biostudies-literature