Pandemics

Data from Y. Yang and colleagues advance knowledge in pandemics

Published in Medical Letter on the CDC and FDA, November 29th, 2009

"Pandemic influenza A (H1N1) 2009 (pandemic H1N1) is spreading throughout the planet. It has become the dominant strain in the Southern Hemisphere, where the influenza season has now ended," researchers in the United States report.

"Here, on the basis of reported case clusters in the United States, we estimated the household secondary attack rate for pandemic H1N1 to be 27.3% [95% confidence interval (CI) from 12.2% to 50.5%]. From a school outbreak, we estimated that a typical schoolchild infects 2.4 (95% CI from 1.8 to 3.2) other children within the school. We estimated the basic reproductive number, R-0, to range from 1.3 to 1.7 and the generation interval to range...

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Source: Medical Letter on the CDC and FDA (2009-11-29)

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