Diseases such as influenza, pneumonia and tuberculosis are transmitted through the air. When an infected person coughs or sneezes, infectious agents may be passed on to others through airborne droplets. When you feel a cough or sneeze coming on, make sure you have covered your mouth with a face mask or use a tissue then dispose it carefully. If you do not have a tissue close by when you cough or sneeze, cover your mouth as much as possible with the crook (or the inside) of your elbow.
