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Influenza update, 19 July 2013 - Update number 190 (WHO, edited): H1N1pdm09 predominant strain in S America

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  • Influenza update, 19 July 2013 - Update number 190 (WHO, edited): H1N1pdm09 predominant strain in S America

    [Source: World Health Organization, full page: (LINK). Edited.]


    Influenza update, 19 July 2013 - Update number 190


    Summary
    • Influenza activity in the northern hemisphere temperate zones remained at inter-seasonal levels.
    • In most regions of tropical Asia influenza activity decreased, except for India and Viet Nam where influenza A activity remained relatively high.
    • In Central America and the Caribbean, influenza activity in Cuba and the Dominican Republic remained high, but with decreasing trends, and began to increase in Costa Rica, El Salvador and Nicaragua.
    • Influenza activity in the southern hemisphere increased considerably in South America and in Southern Africa but remained low in Oceania.
      • In temperate South America, respiratory syncytial virus remained the main detected respiratory virus, but the proportion of influenza positive viruses continued to increase.
      • In tropical South America, influenza A(H1N1)pmd09 became the main detected respiratory virus in most countries, except in Ecuador where respiratory syncytial virus (RSV) remained the main detected virus.
    • As of 19 July, a total of 133 cases of influenza A(H7N9) virus infection have been reported. For more details see: link below
    Full version Epidemiological influenza surveillance update, 793kb

    Information on H7N9

    Virological influenza surveillance update
    ________


    Source of data

    The Global Influenza Programme monitors influenza activity worldwide and publishes an update every two weeks.

    The updates are based on available epidemiological and virological data sources, including FluNet (reported by the Global Influenza Surveillance and Response System) and influenza reports from WHO Regional Offices and Member States. Completeness can vary among updates due to availability and quality of data available at the time when the update is developed.


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