The nurse is planning to administer a vaccine to the preschool child.
An infectious disease-specific biological preparation known as a vaccine delivers active acquired protection. The substance used in vaccinations is typically made from a bacteria's weakened or dead forms, its toxins, or one of its surface proteins. This substance frequently resembles the germs that cause diseases. The substance activates the immune system to identify the substance as a threat, eliminate it, and then identify and eliminate any subsequent bacteria linked to the substance that the body may come into contact with. Vaccines can be therapeutic or preventive (to lessen the symptoms of a future infection by a natural or "wild" virus) (to fight a disease that has already occurred.
To know more about vaccines, visit:
https://brainly.com/question/6683555
#SPJ4
