Most Vaccines Currently Administered Are Delivered by Intramuscular Injection

question 7

Multiple Choice

Most vaccines currently administered are delivered by intramuscular injection. Yet the pathogenic organisms these vaccines aim to protect against usually enter the body by a different route. For instance, many viruses infect us via the respiratory tract, and many bacterial pathogens infect via the gastrointestinal tract. One major advantage of delivering vaccines against these organisms via their normal route of infection would be:

• A) That the vaccines would no longer require the incorporation of an adjuvant in their composition
• B) That the vaccines would elicit IgA antibodies in addition to IgG antibodies
• C) That the vaccines would no longer require several boosters to elicit protective responses
• D) That the vaccines would be more stable and not require refrigeration
• E) That the vaccines would be safer and have fewer side effects than injected vaccines

---

Definitions:

Inverse Function

A mathematical function that reverses the effect of another function, such that if the function f applied to an input x gives a result of y, then applying its inverse function to y gives the result x.

Function

An interrelation between a variety of inputs and a catalog of admissible outputs, with the requirement that every input is pinpointed to a unique output.

Composition

The process of combining two functions by applying one function to the result of another, typically notated as (f◦g)(x).

Function

A scheme relating a bundle of inputs with a spectrum of viable outputs, under the condition that each input is matched with one output exclusively.