Geographical areas affected by the bird flu

Bird flu has not mutated to a form where it can be transmitted from human to human thus far, but it is still spreading readily via birds. The table below displays all geographical areas that have been affected by bird flu so far. Some evidence exists to support the theory that some countries and farmers have been underreporting cases of bird flu in birds, and some unofficial sources also theorize that human cases of bird flu may have been underreported, so the numbers in this table reflect human bird flu cases that have been confirmed by the World Health Organization.