Phase 1 - no viruses circulating among animals have been reported to cause infections in humans. Phase 2 - an animal influenza virus circulating among domesticated or wild animals is known to have caused infection in humans, and is therefore considered ...

World Health Organization (WHO) yesterday raised its influenza pandemic threat level to five out of six. The three new cases double the total number of sick in B.C. to six. In all instances, Patrick added, symptoms of the H1N1 swine ...