What are epidemic and endemic diseases

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(a) What are epidemic and endemic diseases?

(b) Which organ is affected if a person is
suffering from jaundice? 

Answer: 
(a) A disease or condition which affects a large number of people at the same time is called epidemic. e.g. out break of plague in China in 2009.

Endemic disease is disease or condition that is constantly present in a particular community or localised region. e.g. Hepatitis A, Malaria, Dengue are endemic in India. 

(b) Jaundice or hepatitis is a viral disease which affects liver.

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