Flu virus trots globe during off season

Armen Hareyan's picture
Advertisement

The influenza A flu virus does not lie dormant during summer but migrates globally and mixes with other viral strains before returning to the Northern Hemisphere as a genetically different virus, according to biologists who say the finding settles a key debate on what the virus does during the summer off season when it is not infecting people.

"Nobody really knows why flu is a winter disease in the temperate regions and more continuous in the tropics," says Edward Holmes, professor of biology at Penn State. "The big question is,

Share this content.

If you liked this article and think it may help your friends, consider sharing or tweeting it to your followers.
Advertisement