Vaccines are products designed to trigger protective immune responses in pets and prepare them to fight future infections from disease-causing agents.

Vaccines can lessen the severity of future diseases and certain vaccines can prevent infection altogether. Today, a variety of vaccines are available for use by veterinarians. Some vaccines are administered via injections using a syringe and needle, and others are administered into the animal’s nose or directly into the skin (transdermally). Other methods of administration are currently under development.