Mosquitoes can transmit up to 1 million viruses in a single bite.
Get the shot–or not? Learn more about this year’s flu outbreak here.
New funding streams will launch studies in cancer, influenza and lupus.
From Ebola to the common cold, the old standby advice still prevails.
Influenza kills 36,000 Americans and 500,000 worldwide each year.
Explorers brought new infectious diseases with them to the Americas.