Bacterial Infection (Streptococcus) in Cats


PetMD Editorial

Published Jan. 26, 2009

Streptococcal Infection in Cats

Streptococcal infection, common in cats, refers to an infection with the Streptococcus bacteria. Kittens and older cats are most susceptible to developing this disease, as their immune systems are not fully developed or have declined.

The condition described in this medical article is common in both dogs and cats. If you would like to learn more about how it affects dogs, please visit this page in the PetMD health library.


Some of the common symptoms of this infection include:

  • Pain
  • Fever
  • Arthritis
  • Lethargy
  • Coughing
  • Pneumonia
  • Abscess(es)
  • Difficulty swallowing due to swelling (tonsillitis)


Age often determines the propensity for developing this bacterial infection. Both the oldest and youngest cats have less developed immune systems -- the youngest because of the lack of antibodies to fight infection, and the oldest because of a decline in antibodies and a weakened immune system.

Some of the causes for infection are viruses, bacteria, fungi, and protozoa, often resulting from recent exposure through a wound or surgical procedure.


Antibiotics and hydration will be part of the prescribed treatment.

Living and Management

Good nursing care is important to help the cat recover from this bacterial infection. Rehydration is also important for restoring the body with fluid and flushing the system of the infection.


Avoid environments overcrowded with other animals. Other than avoidance of contact with other animals, there are no known preventative measures for this bacterial infection.

Help us make PetMD better

Was this article helpful?

Get Instant Vet Help Via Chat or Video. Connect with a Vet. Chewy Health