How are parenteral vaccines administered?

How are parenteral vaccines administered?

• A. By topical application
• B. Orally
• C. Intravenous injection
• D. By injection with a needle into some part of the body

Answer: (D)

Parenteral administration means delivering a vaccine by breaking the skin and injecting it into body tissues or the bloodstream, bypassing the digestive system. This is best captured by saying it’s done by injection with a needle into some part of the body, which covers the common routes like intramuscular, subcutaneous, and sometimes intradermal injections. Topical application stays on the surface of the skin, and oral vaccines are swallowed and enter the gut, not injected. While intravenous injection is a parenteral route, vaccines are not typically given IV; the general idea is injection into the body's tissues rather than through the GI tract or skin surface.

Parenteral administration means delivering a vaccine by breaking the skin and injecting it into body tissues or the bloodstream, bypassing the digestive system. This is best captured by saying it’s done by injection with a needle into some part of the body, which covers the common routes like intramuscular, subcutaneous, and sometimes intradermal injections. Topical application stays on the surface of the skin, and oral vaccines are swallowed and enter the gut, not injected. While intravenous injection is a parenteral route, vaccines are not typically given IV; the general idea is injection into the body's tissues rather than through the GI tract or skin surface.