All of the following statements reflect the qualities of a safe and effective vaccine, except

A. efficacy must be maintained by booster shots every 5 years.
B. the injected material should be antigenic, but not pathogenic.
C. it should have a long shelf-life, be cheap to produce, and easy to administer.
D. it should confer both humoral and cell-mediated immunity.


Answer: A

Biology & Microbiology

You might also like to view...

All the cells in a cancerous tumor are ____________________ directly descended from one cell. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

If glucose is the sole energy source, what fraction of the carbon dioxide exhaled by animals is generated by the reactions of the citric acid cycle?

A) 1/6 B) 1/3 C) 2/3 D) all of it

Biology & Microbiology

Excessive formation of uric acid crystals in humans leads to _____

A) a condition called diabetes, where excessive urine formation occurs B) a condition of insatiable thirst and excessive urine formation C) gout, a painful inflammatory disease that primarily affects the joints D) osteoarthritis, an inevitable consequence of aging

Biology & Microbiology

According to this phylogeny, which of the following is true?

a. All chordates have a neural tube. c. Echinoderms have a neural tube. b. Amphioxus have a neural crest. d. All chordates have a neural crest.

Biology & Microbiology