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What are the different means by which infectious diseases are spread?


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The different modes of transmission of infectious diseases are:
Through Air: Certain disease-causing micro-organisms are expelled in the air by coughing, sneezing, talking, etc. These micro-organisms can travel through dust particles or water droplets in the air to reach other people. For example, tuberculosis, pneumonia, etc. spread through the air.
Through Water: Sometimes causal micro-organisms get mixed with drinking water and spread water-borne diseases. Cholera, for example, is the water-borne disease.
Through Sexual Contact: Sexual act between two people can lead to the transfer of diseases such as syphilis, gonorrhoea, AIDS, etc.
Through Vectors: Certain diseases spread by other animals called vectors. For example, mosquitoes spread malaria.


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