BANGKOK, Thailand (AP) – Authorities will kill about 40 tigers believed to be sick with bird flu after 30 others died at a private zoo, officials said Wednesday.

The tigers, which have all died since Oct. 14, are among more than 400 at the Sriracha Tiger Zoo in central Chonburi province. All are regularly fed raw chicken, which could have been infected with the bird flu virus.

The decision to kill the tigers came after seven more tigers suspected to have the virus died, bringing the total to 30 after other deaths announced Tuesday.

Zoo executives, health and wildlife officials agreed to destroy the remaining sick tigers, said Dr. Thawat Suntrajarn, director-general of the Public Health Ministry’s Department of Communicable Disease Control.

“About 40 tigers are very sick,” Thawat said. “Those sick tigers will be destroyed to

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