Influenza, also known as the flu, is a contagious disease that is caused by influenza viruses. Influenza viruses infect the respiratory tract (nose, throat, and lungs) in humans. The flu is different from a cold, mainly because the symptoms and complications are more severe.
via Whats New Vaccines Blood Biologics RSS Feed https://ift.tt/3prN3yO
No comments:
Post a Comment