The infectivity of a patient with diphtheria is ?
Ans. is 'd' i.e., For 15 days after infection o The period of infectivity may vary from 14 to 28 days from the onset of the disease, but carriers may remain infective for much longer period. o A case or carrier may be considered non-communicable when at least 2 cultures properly obtained from nose and throat, 24 hours apa, are negative for diphtheria bacilli.
Till cough subsides
Till patient is febrile
Life long
For 15 days after infection
For 15 days after infection