Is this eye infection contagious?

Adding to proveto's reply, I would add that cat flu is a potentially fatal disease for cats (though not for you). Crucially, once a cat is infected, they can never be truly cured. This doesn't mean they will die, but if they pull through, they’ll have a sword of Damocles hanging over their head. Most importantly, they will remain contagious for the rest of their lives, so you must prevent them from coming into contact with other cats—whether your own or the neighbours'—because even if your cat survives, the neighbour's cat might not be so lucky.

Cat flu is a minor illness in humans—it’s just a common cold—but in cats, it can be fatal. Everyone knows about a cat's highly developed hearing and vision, but their most acute sense is actually their smell; it’s the only sense that allows them to recognise food. A cat that loses its sense of smell can no longer tell the difference between dry food and gravel, or between food and waste. Such a cat is doomed unless you take action.

Hi,

Cat flu is caused by infectious agents specific to felines, notably feline herpesvirus (FHV-1) and calicivirus. These viruses cannot be transmitted to humans.

However, they are contagious between cats, mainly through eye and nose discharge and saliva. If you have other cats at home, it is therefore best to limit contact as much as possible, wash your hands after providing care, and regularly clean their food bowls and equipment.

All the best,

Inès