Cat Sanlian is an immune vaccine that can prevent three diseases: feline rhinotracheitis, calicivirus, and panleukopenia. The vaccine is made after the virus is inactivated and will stimulate the cat's body to produce antibodies. When the cat is exposed to the virus again, the body will produce corresponding antibodies to resist the virus.

Common cat triple vaccines include Dutch Intervet, French VIC, American Pfizer and American Ford. Vaccines are divided into attenuated vaccines and inactivated vaccines according to their properties. Attenuated vaccines are also called live attenuated vaccines. This type of vaccine has a better immune effect and requires fewer vaccinations. However, it may be infected with bacteria and has strict storage requirements.