Increasing incidence of Streptococcus pneumoniae serotype 19A and emergence of two vaccine escape recombinant ST695 strains in liguria, italy, 7 years after implementation of the 7-valent conjugated vaccine

Filippo Ansaldi, Paola Canepa, Daniela De Florentiis, Roberto Bandettini, Paolo Durando, Giancarlo Icardi

Research output: Contribution to journalArticle


Two serotype 19A (ST695) Streptococcus pneumoniae vaccine escape recombinant strains attributable to capsular switching events were detected by a laboratory surveillance system that is an integral part of a vaccination program begun in Liguria, Italy, in May 2003, an Italian administrative region with long-lasting high coverage, an unusual occurrence in Europe. To our knowledge, this is the first detection of an occurrence of capsular switching outside the United States.

Original languageEnglish
Pages (from-to)343-345
Number of pages3
JournalClinical and Vaccine Immunology
Issue number2
Publication statusPublished - Feb 2011


ASJC Scopus subject areas

  • Clinical Biochemistry
  • Immunology
  • Immunology and Allergy
  • Microbiology (medical)

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