H1N1 NEWS SCAN: Cases still occurring in tropics, results of flu phone polls

Jul 23, 2010

Tropics remain most active areas for H1N1
Pockets of West Africa, Central America, the Caribbean, and South and Southeast Asia continue to have the most active pandemic flu activity, while overall global flu activity remains low, the World Health Organization (WHO) said in its weekly update today. Australia and New Zealand have seen recent increases in respiratory disease, mostly pandemic flu. Influenza B and H3N2 are dominating South Africa's flu season. The areas with highest H1N1 activity in Asia are India, Cambodia, and Singapore.
Jul 23 WHO update

Surveys provided quick assessment of H1N1 in NYC
Two telephone surveys in May and June 2009 enabled New York City health officials to quickly assess the prevalence and severity of pandemic flu, according to a study published in PLoS One. The polls indicated that the prevalence of flu-like illness in a 50-day period was 15.8%, and estimated case-fatality rates for H1N1 ranged from 0.054 to 0.086 per 1,000. The surveys indicated that the risk of severe illness was similar to that with seasonal flu, which influenced the city's pandemic response.
Jul 21 PLoS One report

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