Air Borne Diseases:
A number of diseases are caused due to bacteria and virus that are carried in the air. When an infected person sneezes or coughs, there is a noticeable spray of drops. These tiny droplets of liquid contain germs which can remain afloat in the air for a long period. If another person is standing by, he is likely to breathe in quite a lot of such geps and thus get infected. One sick person can thus infect a lot of others. The common cold virus is spread in this way. In Table are given diseases that are spread in various ways. As listed, leprosy is also spread in similar way. But it spreads only if the Victim remains very close to the diseased person for a long period, and it takes very long time for the symptoms to develop. These diseases spread easily in damp closed spaces.