WHO: Pandemic (H1N1) 2009 – update 97: 23 April 2010

The WHO continues to issue weekly updates on the H1N1 pandemic updates at http://www.who.int/csr/disease/swineflu/en/index.html

Pandemic (H1N1) 2009 – update 97
Weekly update
23 April 2010

As of 18 April 2010, worldwide more than 214 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 17853 deaths…

Situation update:
Summary: Currently the most active areas of transmission of pandemic influenza are in parts of West and Central Africa but transmission is also still occurring in South East Asia, and Central America. Pandemic influenza activity remains low in much of the temperate zone of both the northern and southern hemispheres. Seasonal influenza type B viruses have been increasingly detected over a larger area and are now the predominant circulating influenza viruses across East Asia, Central Africa and Northern and Eastern Europe. Very small numbers of type B viruses have also recently been detected in Central America. Seasonal influenza H3N2 is still being detected in South and Southeast Asia (mainly Indonesia), as well as sporadically in several countries of West Africa, and Eastern Europe.

Full report at: http://www.who.int/csr/don/2010_04_23a/en/index.html

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