Pneumococcal bacteremia in febrile infants presenting to the emergency department 8 years after the introduction of pneumococcal conjugate vaccine in the Basque Country of Spain

Pediatr Infect Dis J. 2010 Dec;29(12):1142-4. doi: 10.1097/INF.0b013e3181eaf89a.

Abstract

We included 3088 well-appearing infants aged between 3 and 36 months with fever without a source with a blood culture done as part of their study of fever. Rate of positive blood cultures for Streptococcus pneumoniae occult bacteremia (OB) was 0.58%. Rate of OB caused by PCV7-serotypes and nonvaccine serotypes were 0.16% and 0.42%, respectively. A total of 18 cases of S. pneumoniae OB were identified between January 1, 2006 and December 31, 2009. None of the 5 infants who had S. pneumoniae OB caused by vaccine serotypes had received PCV7. The decline in pneumococcal OB rates observed after PCV7 introduction in our area (Basque Country, Spain) continues 8 years later. There is no evidence of an OB rate increase caused by non-PCV7 serotypes.

MeSH terms

  • Bacteremia / epidemiology*
  • Bacteremia / microbiology*
  • Child, Preschool
  • Emergency Medical Services
  • Heptavalent Pneumococcal Conjugate Vaccine
  • Hospitalization
  • Humans
  • Infant
  • Pneumococcal Infections / complications
  • Pneumococcal Infections / epidemiology*
  • Pneumococcal Infections / microbiology
  • Pneumococcal Vaccines / administration & dosage
  • Pneumococcal Vaccines / immunology*
  • Spain / epidemiology
  • Streptococcus pneumoniae / isolation & purification*

Substances

  • Heptavalent Pneumococcal Conjugate Vaccine
  • Pneumococcal Vaccines