The Spread of Influenza A(H1N1)pdm09 Virus in Madagascar Described by a Sentinel Surveillance Network

Details

• Alternative Title:
  PLoS One
• Personal Author:
  Rajatonirina, Soatiana ; Heraud, Jean-Michel ; Orelle, Arnaud ; Randrianasolo, Laurence ; Razanajatovo, Norosoa ; Rajaona, Yolande Raoelina ; Randrianarivo-Solofoniaina, Armand Eugène ; Rakotomanana, Fanjasoa ; Richard, Vincent
• Description:
  Background
  
  The influenza A(H1N1)pdm09 virus has been a challenge for public health surveillance systems in all countries. In Antananarivo, the first imported case was reported on August 12, 2009. This work describes the spread of A(H1N1)pdm09 in Madagascar.
  
  Methods
  
  The diffusion of influenza A(H1N1)pdm09 in Madagascar was explored using notification data from a sentinel network. Clinical data were charted to identify peaks at each sentinel site and virological data was used to confirm viral circulation.
  
  Results
  
  From August 1, 2009 to February 28, 2010, 7,427 patients with influenza-like illness were reported. Most patients were aged 7 to 14 years. Laboratory tests confirmed infection with A(H1N1)pdm09 in 237 (33.2%) of 750 specimens. The incidence of patients differed between regions. By determining the epidemic peaks we traced the diffusion of the epidemic through locations and time in Madagascar. The first peak was detected during the epidemiological week 47-2009 in Antananarivo and the last one occurred in week 07-2010 in Tsiroanomandidy.
  
  Conclusion
  
  Sentinel surveillance data can be used for describing epidemic trends, facilitating the development of interventions at the local level to mitigate disease spread and impact.
  
  
• Subjects:
  Adolescent Adult Child Child, Preschool Disease Outbreaks Epidemics Female Humans Incidence Infant Influenza, Human Influenza A Virus, H1N1 Subtype Male Public Health Surveillance Sentinel Surveillance Young Adult

  More +
• Source:
  PLoS One. 2012; 7(5).
• Pubmed ID:
  22615893
• Pubmed Central ID:
  PMC3353907
• Document Type:
  Journal Article
• Funding:
  OD/AP-08-02451/OD/NIH HHS/United States ; U51/IP000327-01/IP/NCIRD CDC HHS/United States
• Place as Subject:
  Madagascar
• Volume:
  7
• Issue:
  5
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:90d42ccdb85f4cbd17630fa60b2ef21e36725ae68ce4160831d79e459e4148ac
• Download URL:
  https://stacks.cdc.gov/view/cdc/22753/cdc_22753_DS1.pdf
• File Type:
  [PDF - 1.65 MB ]