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SEMINAR: Fwd: Talk by Dr. Jeffrey Shaman, Columbia University ~ Mon, Nov. 19, 2 p.m., Ungar 230C
| From: | Amy Clement <aclement@rsmas.miami.edu> |
| Subject: | SEMINAR: Fwd: Talk by Dr. Jeffrey Shaman, Columbia University ~ Mon, Nov. 19, 2 p.m., Ungar 230C |
| Date: | Mon, 12 Nov 2012 15:55:02 -0500 |
|
-------- Original Message --------
Absolute
Humidity and the Seasonality
of Influenza
A talk by
Dr. Jeffrey Shaman Assistant
Professor of Environmental Health Sciences, Columbia
University
Much of the
observed wintertime increase of mortality in temperate
regions is attributed to seasonal influenza. A recent
re-analysis of laboratory experiments indicates that
absolute humidity strongly modulates the airborne survival
and transmission of the influenza virus. Here we show that
the onset of increased wintertime influenza-related
mortality in the United States is associated with
anomalously low absolute humidity levels during the prior
weeks. We then use an epidemiological model, in which
observed absolute humidity conditions temper influenza
transmission rates, to successfully simulate the seasonal
cycle of observed influenza-related mortality. The model
results indicate that direct modulation of influenza
transmissibility by absolute humidity alone is sufficient to
produce this observed seasonality. These findings
provide epidemiological support for the hypothesis that
absolute humidity drives seasonal variations of influenza
transmission in temperate regions.
|
Attachment:
Jeffrey Shaman Talk ~ Nov. 19, 2 p.m..pdf
Description: Adobe PDF document
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