Typing of pneumococcal surface protein A (PspA) in Streptococcus pneumoniae isolated during epidemiological surveillance in Brazil: towards novel pneumococcal …

MCC Brandileone, ALSS Andrade, EM Teles… - Vaccine, 2004 - Elsevier
MCC Brandileone, ALSS Andrade, EM Teles, RC Zanella, TI Yara, JL Di Fabio…
Vaccine, 2004Elsevier
Pneumococcal protein vaccine based on pneumococcal surface protein A (PspA) is in
development with the potential to offer broad range of protection against different strains. We
have investigated the frequency of PspA family 1 (Fam1) and family 2 (Fam2) proteins
among Streptococcus pneumoniae recovered from ongoing surveillance in Brazil. Fam1 and
Fam2 were expressed in comparable rates among 366 isolates, with the potential coverage
of 94.3%. PspA families were not associated to age group or source of isolates. However …
Pneumococcal protein vaccine based on pneumococcal surface protein A (PspA) is in development with the potential to offer broad range of protection against different strains. We have investigated the frequency of PspA family 1 (Fam1) and family 2 (Fam2) proteins among Streptococcus pneumoniae recovered from ongoing surveillance in Brazil. Fam1 and Fam2 were expressed in comparable rates among 366 isolates, with the potential coverage of 94.3%. PspA families were not associated to age group or source of isolates. However, considering the significant tendency of increasing prevalence of Fam2 associated to widespread dissemination of the genetically-related resistant strains, the monitoring of the PspA families derived from population-based data may be necessary in the context of vaccine development.
Elsevier
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