Influenza transmission during a one-year period (2009-2010) in a Sahelian city: low temperature plays a major role.
Summary of "Influenza transmission during a one-year period (2009-2010) in a Sahelian city: low temperature plays a major role."
Please cite this paper as: Jusot J-François et al. (2011) Influenza transmission during a one-year period (2009-2010) in a Sahelian city: low temperature plays a major role. Influenza and Other Respiratory Viruses
10.1111/j.1750-2659.2011.00286.x. This work aimed at studying the link between some climatic factors and the occurrence of influenza in Niamey, Niger. Patients with influenza like illness or severe acute respiratory illness were recruited through a sentinel network. A nasopharyngeal swab was sampled and tested for influenza viruses A and B by RT-PCR. Time series of daily counts of influenza cases and climatic factors were linked using a generalized additive model. Among the 320 patients recruited, 76 were confirmed positive for influenza. Influenza cases increased significantly with minimal temperatures and high visibility. This work brings some valuable explanation to the impact of low temperatures on influenza transmission.
Unité d'Epidémiologie, Santé-Environnement-Climat. Centre de Recherches Médicales et Sanitaires (CERMES), Boulevard de la Nation, Niamey, Niger. Unité de Biologie. Centre de Recherches Médicales et Sanitaires (CERMES), Boulevard de la Nation, Niamey
This article was published in the following journal.
Name: Influenza and other respiratory viruses
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21933356
- DOI: http://dx.doi.org/10.1111/j.1750-2659.2011.00286.x
Medical and Biotech [MESH] Definitions
American Recovery And Reinvestment Act
Public Law No: 111-5, enacted February 2009, makes supplemental appropriations for job preservation and creation, infrastructure investment, energy efficiency and science, assistance to the unemployed, and State and local fiscal stabilization, for fiscal year ending September 30, 2009.
Vaccines used to prevent infection by viruses in the family ORTHOMYXOVIRIDAE. It includes both killed or attenuated vaccines. The composition of the vaccines is changed each year in response to antigenic shifts and changes in prevalence of influenza virus strains. The vaccine is usually bivalent or trivalent, containing one or two INFLUENZAVIRUS A strains and one INFLUENZAVIRUS B strain.
Influenza A Virus
The type species of the genus INFLUENZAVIRUS A that causes influenza and other diseases in humans and animals. Antigenic variation occurs frequently between strains, allowing classification into subtypes and variants. Transmission is usually by aerosol (human and most non-aquatic hosts) or waterborne (ducks). Infected birds shed the virus in their saliva, nasal secretions, and feces.
Influenza B Virus
Species of the genus INFLUENZAVIRUS B that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed.
Hemagglutinin Glycoproteins, Influenza Virus
Membrane glycoproteins from influenza viruses which are involved in hemagglutination, virus attachment, and envelope fusion. Fourteen distinct subtypes of HA glycoproteins and nine of NA glycoproteins have been identified from INFLUENZA A VIRUS; no subtypes have been identified for Influenza B or Influenza C viruses.
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