Staph Infection in Cats

A staph infection in cats is a bacterial skin infection caused by Staphylococcus bacteria. These bacteria can spread between animals and, in some cases, from animals to humans.

What Is a Staph Infection in Cats?

Staphylococcus bacteria commonly live on the skin and in the upper respiratory tract of animals. However, when a cat’s normal immune defenses are compromised, the bacteria that may otherwise live harmlessly on the skin can multiply and cause infection.

Staph infections can affect cats of any breed and age.

Symptoms of Staph Infection in Cats

Staph infection in cats can cause both localized skin infections and systemic illness.

Common signs include:

• Fever
• Loss of appetite
• Pain
• Skin abscesses
• Itching (pruritus)
• Inflammation with pus-filled lesions (pyoderma)
• Infections of the skin, ears, eyes (conjunctivitis), or respiratory tract

In cats specifically, common indicators of staph infection include:

• Skin abscesses
• Oral infections
• Eye infections
• Bacteremia (bacterial blood infection)

Symptoms may vary depending on where the infection is located and how severely the immune system is affected.

Causes of Staph Infection in Cats

Staph infection in cats most commonly develops when the immune system is weakened or the skin barrier is compromised.

Young cats are more susceptible because their immune systems are not fully developed. Senior cats are also at increased risk, as immune function naturally declines with age.

Other contributing factors include:

• Bloodborne bacterial or fungal infections (systemic pathogens)
• Chronic, debilitating diseases that weaken the immune system
• Allergies that damage the skin barrier
• Secondary infections that allow Staphylococcus bacteria to invade

How Veterinarians Diagnose Staph Infection in Cats

Diagnosing a staph infection in cats requires identifying both the bacterial infection and any underlying cause that allowed it to develop.

Your veterinarian will typically begin with a complete blood profile, which may include:

• A chemical blood profile
• A complete blood count (CBC)
• A urinalysis

Skin testing may also be performed to determine whether allergies or immune-related conditions are contributing to the infection. 

It is also important to rule out abnormal cell development, such as cancer, which may weaken the immune system or interfere with normal skin health.

Treatment of Staph Infection in Cats

Treatment for staph infection in cats typically involves antibiotic therapy tailored to the specific bacterial strain involved.

Some strains of Staphylococcus bacteria are resistant to commonly prescribed medications. In these cases, standard antibiotics may not be effective, and your veterinarian may need to prescribe an alternative treatment.

Recovery and Management of Staph Infection in Cats

Proper hygiene and wound care are essential when managing a staph infection in cats.

All potentially contaminated materials—such as bedding, bandages, or cleaning supplies—should be properly disposed of or thoroughly disinfected.

Regular topical cleansing of wounds and affected skin areas is critical to promote healing and reduce bacterial spread.

Because Staphylococcus bacteria are opportunistic and can spread between animals—and in some cases to humans—extra precautions should be taken. Wash your hands thoroughly after handling your cat or cleaning wounds, and consider wearing gloves when applying medications or cleaning infected areas.

Preventing Staph Infection in Cats

There are no specific vaccines or guaranteed preventive measures for staph infection in cats.

However, reducing risk factors can help lower the likelihood of infection. Maintaining good overall health, managing allergies promptly, treating wounds quickly, and keeping your cat’s environment clean may decrease the chance of bacterial overgrowth.

Because staph bacteria commonly live on the skin, preventing infection largely depends on maintaining a healthy immune system and protecting the skin barrier from injury.