A virus is a tiny organism that can make you sick. It enters your body and causes infections, such as the common cold or flu. It spreads from person to person easily, so it's important to take precautions to avoid getting viruses.Full definition
This group focused on producing a preliminary list of viruses of concern to humans and food animals. (callistoproject.eu)
Given these results, the authors write, continued surveillance of influenza viruses in birds remains essential. (sciencedaily.com)
Scientists previously have shown that antibodies directed at the stem stop a diverse array of influenza viruses from causing an infection, and some are being developed as treatments. (sciencemag.org)