Carriage Rate and Effects of Vaccination after Outbreaks of Serogroup C Meningococcal Disease, Brazil, 2010

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Sáfadi, Marco Aurelio Palazzi ; Carvalhanas, Telma Regina Marques Pinto ; Paula de Lemos, Ana ; Gorla, Maria Cecilia Outeiro ; Salgado, Maristela ; Fukasawa, Lucila O. ; Gonçalves, Maria Gisele ; Higa, Fabio ; Brandileone, Maria Cristina Cunto ; Sacchi, Claudio Tavares ; Ribeiro, Ana Freitas ; Sato, Helena Keico ; Bricks, Lucia Ferro ; Cassio de Moraes, José
• Description:
  During 2010, outbreaks of serogroup C meningococcal (MenC) disease occurred in 2 oil refineries in São Paulo State, Brazil, leading to mass vaccination of employees at 1 refinery with a meningococcal polysaccharide A/C vaccine. A cross-sectional study was conducted to assess the prevalence of meningococci carriage among workers at both refineries and to investigate the effect of vaccination on and the risk factors for pharyngeal carriage of meningococci. Among the vaccinated and nonvaccinated workers, rates of overall meningococci carriage (21.4% and 21.6%, respectively) and of MenC carriage (6.3% and 4.9%, respectively) were similar. However, a MenC strain belonging to the sequence type103 complex predominated and was responsible for the increased incidence of meningococcal disease in Brazil. A low education level was associated with higher risk of meningococci carriage. Polysaccharide vaccination did not affect carriage or interrupt transmission of the epidemic strain. These findings will help inform future vaccination strategies.
• Subjects:
  Adolescent Adult Carrier State Cross-Sectional Studies Disease Outbreaks History, 21st Century Humans Incidence Meningitis, Meningococcal/classification Meningitis, Meningococcal/genetics Meningitis, Meningococcal/immunology Meningococcal Infections/epidemiology Meningococcal Infections/history Meningococcal Infections/prevention & Control Meningococcal Vaccines Multilocus Sequence Typing Risk Factors Serotyping Vaccination Young Adult

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• Source:
  Emerg Infect Dis. 20(5):806-811.
• Document Type:
  Journal Article
• Place as Subject:
  Brazil
• Volume:
  20
• Issue:
  5
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:00488c936f40ec16390986d716b8cb023a49f9971c4ebd15f56d8983696f3a3b
• Download URL:
  https://stacks.cdc.gov/view/cdc/23055/cdc_23055_DS1.pdf
• File Type:
  [PDF - 394.97 KB ]