WASHINGTON, March 2 (Reuters) - Virtually all cases of the most common strain of flu circulating in the United States now resist the main drug used to treat it, the U.S. Centers for Disease Control and Prevention reported on Monday.
WASHINGTON, March 2 (Reuters) - Virtually all cases of the most common strain of flu circulating in the United States now resist the main drug used to treat it, the U.S. Centers for Disease Control and Prevention reported on Monday.
