1.

A) What are the different means by which infectious diseases are spread?b) Define vectors. Give two examples of vector‐borne diseases. Explain the method of preventions of malaria.

Answer»

Infectious disease can SPREAD through following means
air
water 
food etc
vectors are the CARRIERS of diseases 
ex malaria kala azar
we can prevent malaria by cleaning our suurounding throwing dirty water away putting meshes on the WINDOW etc



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