Front Line of Flu Research

What would a college student do for $100? At the University of Michigan at Ann Arbor, 800 of them earned that much by wearing surgical masks for the seven-week duration of an influenza study.

"The World Health Organization is very concerned that the world is closer to an influenza pandemic," says Allison E. Aiello, an assistant professor of epidemiology at the university's School of Public Health. She helped put together a study, the first of its kind, to gauge the effectiveness of

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