US investigators have found no further sign of anthrax in the office of a man killed by the disease since traces were found on his computer keyboard and in the nose of a co-worker, health officials said.

A second case of anthrax has been discovered in the United States.

A man of British descent has died after being diagnosed with a rare form of anthrax, hospital authorities said.

A man diagnosed with a rare form of anthrax has died.

A man left fighting for his life in an American hospital after contracting a rare form of anthrax was not believed to be linked to a possible bio-terrorism attack, the US health secretary has said.