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.
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.
ANSALDI, FILIPPO;DURANDO, PAOLO;ICARDI, GIANCARLO
2011-01-01
Abstract
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.
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