Dog & cat health · Vet-reviewed guide

Is Cat Pink Eye Contagious to Humans and Other Cats?

If your cat has pink eye, the natural worry is whether you or the other pets can catch it. The answer is mostly reassuring — with a couple of exceptions worth knowing.

Quick answer: Is cat pink eye contagious to humans? In most cases, no, but there is an important exception. The most common causes of feline conjunctivitis are viral, such as feline herpesvirus, and these are specific to cats, so they cannot infect people.

The exception is a few bacterial causes, mainly Chlamydophila felis and Mycoplasma, which can occasionally pass to humans, which is why washing your hands after handling an affected cat is sensible. Between cats, though, it is a different story: infectious conjunctivitis, especially the viral forms, spreads very easily from cat to cat through direct contact and shared bowls or bedding. So the practical takeaway is that you are very unlikely to catch it yourself but your other cats are at real risk. Keep the affected cat separated and wash your hands, and see a vet to identify the cause and treat it.

Can you catch it from your cat?

For the usual viral causes, no. Feline herpesvirus and calicivirus are adapted to cats and do not establish infection in people.¹ The realistic human risk comes only from certain bacterial infections, chiefly Chlamydophila felis and Mycoplasma, which have been reported to cause mild conjunctivitis in people in rare cases, usually with close contact and poor hand hygiene.² Simple hand-washing after touching your cat or cleaning its eye reduces that small risk to almost nothing.

It spreads easily between cats

This is where owners should focus. Infectious conjunctivitis is highly contagious among cats and can move quickly through a multi-cat household, shelter, or foster home.² It passes through direct contact, sneezing, and shared items like food bowls, water dishes, and bedding. If one cat has it, assume the others are exposed.

How to prevent spread

• Isolate the affected cat in a separate room until your vet says it is safe to reunite them.
• Don't share bowls, litter, or bedding between the sick cat and the others; wash these items separately.
• Wash your hands after handling the cat or touching its eye, before touching another cat.
• Clean shared surfaces the cat contacts.

Allergic and irritant causes don't spread at all

Not every red eye is infectious. Conjunctivitis from allergies, dust, or irritants is not contagious to anyone, cat or human.¹ The trouble is that these can look identical to an infection from the outside, which is why a vet visit is the reliable way to know what you are dealing with.

When to see a vet

Because the cause determines both the treatment and whether it spreads, a vet visit is the practical next step, especially if the eye is very red or painful, held shut, cloudy, or not improving.² A vet can identify the cause and prescribe the right treatment. If your cat needs a prescription, our licensed veterinarians can review your cat and issue one when appropriate. See how our vet prescription service works.