Although it has been largely phased out of U.S. vaccines, thimerosal has long been targeted by anti-vaccine advocates.

The CDC declared the end of its emergency response to H5N1 avian flu as a health threat to humans, David Murray writes.

A deadly bird flu has jumped to entirely different species - and they're in your house now. The H5N1 Bird Flu was was detected in house flies in California, according a Twitter account dedicated to ...

Decades of research show the mercury-containing preservative thimerosal is safe in vaccines, but CDC's new advisory panel is raising concerns about its safety.

Citing a drop in case counts, the CDC has ended the H5N1 bird flu emergency last week. Read more here.

CDC announces the end of its H5N1 bird flu emergency response as cases drop ...

The spokesperson said that surveillance, readiness and response for influenza – including H5N1 bird flu – will continue under the CDC’s influenza division and other appropriate agency programs.