What is influenza A, the type of flu making people so sick right now?
(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests ...
WebMD16 天
Types of Flu
The last type of flu virus, influenza D, mostly affects cattle. No cases of infection or illness have been reported in people. The flu is linked to about 3,000-49,000 deaths and 200,000 ...