Infectious disease

 Infectious disease are these disease caused by Pathogens. Pathogens are these microorganism that causes harmful effect in body and causes disease. The microorganism that provides beneficial effect in body is called normal flora. 

Infection may caused by virus, bacteria and protozoa. COVID19 is a respiratory disease that causes lung inflamation, pneumonae is a viral infection by Corona virus. Another most dangerous respiratory disease is Tubercolosis caused by Chlostridium titani infection.

AIDS is a disease of STD type that destroys body immunue system causes by HIV virus infection.


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