Which vaccines are given subcutaneously?

Which vaccines are given subcutaneously?

• A. MMR only
• B. Varicella only
• C. Neither MMR nor Varicella are given subcutaneously
• D. Both MMR and Varicella vaccines are given subcutaneously

Answer: (D)

The route of administration for vaccines matters for how the immune system encounters the antigen. MMR and Varicella vaccines are both given by subcutaneous injection. This route is used because the vaccines are live attenuated and formulated to be absorbed through the subcutaneous tissues, where antigen-presenting cells can efficiently initiate the immune response without the deeper tissue risks that can come with intramuscular injections. Since both vaccines use this route, the correct statement is that both are given subcutaneously. The other options imply only one vaccine or neither, which isn’t accurate.

The route of administration for vaccines matters for how the immune system encounters the antigen. MMR and Varicella vaccines are both given by subcutaneous injection. This route is used because the vaccines are live attenuated and formulated to be absorbed through the subcutaneous tissues, where antigen-presenting cells can efficiently initiate the immune response without the deeper tissue risks that can come with intramuscular injections. Since both vaccines use this route, the correct statement is that both are given subcutaneously. The other options imply only one vaccine or neither, which isn’t accurate.