MCQ IN MEDICINE

Detailed explanation-1: -Most people who have had chickenpox will be immune to the disease for the rest of their lives. However, the virus remains inactive in nerve tissue and may reactivate later in life causing shingles. Very rarely, a second case of chickenpox does happen.

Detailed explanation-2: -An example of active immunity is through vaccinations, and passive immunity is through the placenta.

Detailed explanation-3: -For example, passive immunity occurs when a baby receives a mother’s antibodies through the placenta or breast milk. It can also occur when a person receives an injection of antibodies to protect against the effects of a toxin such as snake venom.

Detailed explanation-4: -Give a few examples of active and passive immunity. Immunization of chickenpox, hepatitis, flu, and polio are some examples of active immunity. A baby receiving antibodies from her mother’s breast milk and injection of antisera are examples of passive immunity.