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Novel H1N1 flu : international situation update ; June 4, 2010
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June 4, 2010
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Journal Article:Human Influenza A (H1N1), 2009
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Description:This report provides an update to the international flu situation using data collected through May 30, 2010, and reported by the World Health Organization (WHO) on June 4.
WHO continues to report laboratory-confirmed 2009 H1N1 flu deaths on its Web page. These fatal cases are an under-representation of the actual number of flu associated deaths as many deaths are never tested or recognized as influenza related.
The most active areas of 2009 H1N1 influenza transmission continue to be reported in the tropical regions of the Caribbean and Southeast Asia. Influenza B viruses are currently the predominant type of influenza virus circulating around the world. In the tropical regions of the Americas, there have been consistently low levels of 2009 H1N1 influenza circulating since the beginning of 2010. In the temperate Southern Hemisphere, Chile is the only country to recently report a small number of 2009 H1N1 influenza cases. There have been no reports of 2009 H1N1 influenza activity in South Africa. In Australia, only intermittent detections of seasonal and 2009 H1N1 influenza viruses have been reported. Influenza activity remains low in most parts of the temperate Northern Hemisphere. In the European region, influenza activity is low and at levels normally seen during the summer. In addition, a low percentage (2.4%) of respiratory specimens collected in the European region through May 30, 2010, and submitted for laboratory testing have tested positive for influenza. Of the 32 influenza virus detections reported this week, 80% were influenza B. Low levels of seasonal influenza A (H3N2) viruses have also been reported in East Africa, as well as detections of influenza B in Central Africa.
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