Question

Vaccines are a widely used public health tool that has helped control the spread of infectious diseases. Which best describes how vaccines work?

A vaccine results in the production of the appropriate antibodies that protect against future infection.

A vaccine helps control the symptoms of a particular infection while the body’s natural immune response fights to neutralize the pathogens causing the infection.

A vaccine is used to modify the DNA of a person, which will direct the cell’s immune system to fight the infection.

A vaccine benefits a person who is already sick by providing them with antibodies from somebody who has already had the illness.

Answer 1

A vaccine results in the production of the appropriate antibodies (and immune memory cells) that protect against future infection.