Bird Flu Returns

Bird flu
Bikas Das / AP

Calcutta, India
A chicken strolls over a net as others are held inside at a Calcutta market. Health workers on Wednesday began slaughtering hundreds of thousands of chickens after an outbreak of bird flu killed more than 35,000 birds in eastern India in mid-January.

Get the Latest Photos from
Get TIME photos and pictures of the week delivered directly to your inbox.