What Is Flu and How Is It Caused? Influenza, or flu, is a contagious respiratory disease caused by a virus. when someone who has flu sneezes or coughs, the flu virus is expelled into the air where it may be Read More …
How to Fight Flu
Tag: influenza
Lung infections
What symptoms do different lung infections caused? A lung infection occurs when a dangerous microbe, similar to a bacterium or a contagion, gets into the lungs and causes damage. The inflexibility of a lung infection can range from mild to Read More …