What are the different mean by which infectious diseases are spread?
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Answer:
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
Some infectious diseases can be passed from person to person. Some are transmitted by insects or other animals. And you may get others by consuming contaminated food or water or being exposed to organisms in the environment.
The different means by which infectious diseases spread are :-
♥ Through air - The air carries bacteria and virus . The diseases caused by this are common cold , influenza , tuberculosis etc...
♥ Through food & water - When one takes contaminated food or water that contains bacteria , virus , etc... it can cause diseases like cholera , typhoid and hepatitis .
♥ Through contact - Many diseases spread by contact of infected person with the healthy person , like fungal infections , skin diseases , etc...
♥ By sexual contact - Many diseases can be transmitted through sexual contact like syphilis , AIDS , etc...
♥ Vectors - The organism that spreads a disease by carrying pathogens from one place to another is called vector . Eg ; mosquitoes are vectors that carry pathogens like protozoa .