Answers

2016-02-19T21:03:16+05:30
Infectious diseases are diseases that can transmit from one  person to another.they can spread through air,such as tuberculosis.....it can spread through water also,such as cholera
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2016-02-20T12:03:11+05:30
Infectious diseases are diseases where microbes are the immediate cause.
like as typhoid, cholera,anthrax, etc
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