Explain what do you understand by pathogens. How can we control the microbial diseases?
Any organism that causes disease is called a pathogen. Invasion and multiplication of these pathogens in the infected host results in the onset of disease due to the destruction of the normal cell metabolism.
There are three ways of controlling the microbial diseases:
(i) by using a drug which kills the organism in the body.
(ii) by using a drug which inhibits or arrests the growth of the organism.
(iii) by increasing immunity and resistance to infection of the body.