00:01
Hi, in this answer we are going to select all the options that makes eradication of diseases possible.
00:12
So eradication refers to bringing the prevalence of a disease to zero in global population.
00:28
So only infectious diseases can be eradicated.
00:34
So smallpox is one such disease.
00:37
Which is totally eradicated and polio malaria etc are the diseases who are undergoing ongoing programs for eradication so option a which says the disease transmission should be zoonotic is a wrong option because zoonotic diseases are spread from animals and these pathogens undergo mutation and exhibit antigenic variation.
01:25
So their antigens keep changing for which the body has to exhibit a specific immunity every time the antigen infects the host.
01:40
So zoonotic diseases are difficult to eradicate.
01:44
So option a is the wrong option.
01:47
Option b which says the disease must be found in the human reservoirs is a correct option because in case of disease infecting humans, the human to human transmission can be prevented hence the disease can be contained.
02:08
So option b is the correct option.
02:13
Coming to option c which says the preventive measures should not be costly...