_____ are a way to bolster immunity to certain diseases and are especially recommended for children and the elderly or others who are more vulnerable to infection.

(1 point)
Responses

Bacteria

Bacteria

Immunizations

Immunizations

Toxins

Toxins

Antibiotics

1 answer

Immunizations are a way to bolster immunity to certain diseases and are especially recommended for children and the elderly or others who are more vulnerable to infection.