Feline infectious diseases are illnesses that can affect cats, often caused by viruses, bacteria, or parasites. Common examples include feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV), both of which can weaken a cat's immune system. Other diseases, like feline panleukopenia, can lead to severe gastrointestinal issues and are highly contagious among cats. Prevention is key in managing these diseases. Vaccinations are available for many infectious diseases, helping to protect cats from serious health risks. Regular veterinary check-ups and maintaining a clean environment can also reduce the likelihood of infection and promote overall feline health.