PATHOLOGY

Detailed explanation-1: -Thus, based on the above information we can conclude that the statement that a person recovered from measles does not get measles again is an example of active acquired immunity. Hence, the correct answer is option (B). Innate immunity – It is the kind of immunity that is present at the time of birth.

Detailed explanation-2: -Active Immunity Natural immunity is acquired from exposure to the disease organism through infection with the actual disease. Vaccine-induced immunity is acquired through the introduction of a killed or weakened form of the disease organism through vaccination.

Detailed explanation-3: -Explanation: A person who has recovered from smallpox, measles or mumps develop natural active immunity against those pathogens and will not suffer from these diseases again as these diseases are itself memory cells generating diseases.

Detailed explanation-4: -So, the correct answer is ‘it is long-lasting immunity with no side effects’.

Detailed explanation-5: -Reason: In case of snakebites, the injection given to the patient contains readymade antibodies to fight against the snake venom. It is an example of artificial passive immunity.