Flu is the abbreviated term for the influenza virus, which is a highly contagious viral infection of the respiratory tract. The virus affects the nose, throat, bronchial tubes, and lungs, and may also cause inflammation and pain in muscles and joints.
It is spread from person to person through airborne droplets when an infected person either [...]

The common cold is, as the name suggests, very common and easy to catch. Most adults tend to catch a cold about three to four times a year. Unfortunately, children are much more prone to catching colds, as their immune systems are vulnerable and they tend to spread infections more quickly in daycare and school [...]

Although it may not seem like it, a cough is a protective action by the body in healthy individuals. It is an involuntary reflex initiated by two classes of nerves with endings in the lungs.
Coughing is an action the body takes to get rid of substances irritating the air passages, and a cough is usually [...]