Cat flu can make a kitten extremely poorly and even lead to death. Speak to your vet about getting your kitten vaccinated against cat flu.
The coronaviruses are a family of viruses that cause illness in humans and animals across the world. Call your vet for advice if you are concerned that your pet is unwell.
Cats can have allergic reactions just like people. Common triggers include insect stings, plants and medications (including vaccinations).