<prompt> Chronic carrier is seen inMeaslesWhooping coughTyphoidInfluenza  <response>: A chronic carrier is one who shed infectious agent for indefinite periods Seen in Typhoid, Hepatitis B, Dysentery, Cerebrospinal meningitis, Malaria, Gonorrhoea Reference; Park;s Textbook of Preventive and Social medicine; 24th edition; Page no. 101 