MCQ IN MEDICINE

Detailed explanation-1: -Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Detailed explanation-2: -Some newer vaccines (e.g., COVID-19 mRNA vaccines) contain instructions for producing antigens rather than the antigen itself. When a person gets a vaccine, the immune system responds to the antigen as if it were exposed to the actual germ (it makes antibodies and remembers how to defeat it).

Detailed explanation-3: -Vaccines help your immune system fight infections faster and more effectively. When you get a vaccine, it sparks your immune response, helping your body fight off and remember the germ so it can attack it if the germ ever invades again.

Detailed explanation-4: -Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protects it from the microbe when it invades the body again.

Detailed explanation-5: -Antibodies that have the function of ensuring viral inhibition are called “Neutralizing Antibodies”. Neutralizing antibodies produced against SARS-CoV-2 virus are dominantly produced against Spike (S) protein.