When do you use vaccines?

Vaccines are used to prevent infectious diseases. You use them before you get sick to avoid illness. Some vaccines are for use seasonally (e.g., flu vaccines) and some are used only at certain ages in the normal vaccination schedules. It depends very much on the type of vaccine and the diseases they are intended to prevent, the age of the patient, and the location where the patient lives and/or travels. Your health care professional can provide you a listing of the recommended types of and times for the vaccinations recommended for you.