The reasons why cats suddenly get feline distemper:

1. When the cat’s resistance is reduced and the vaccination is unsuccessful, it will be infected by the feline distemper virus when it is exposed to it. A cat's frequent changes of environment, surgery, or bathing may cause a decrease in its resistance.

2. Cats can also be suddenly infected with feline distemper when they have not been vaccinated, are not fully vaccinated, or some cats are not successfully vaccinated due to physical reasons.

3. If you come into contact with a cat suffering from feline distemper, or if the owner comes into contact with infected cats or carriers and their excrement, and then returns home and comes into contact with your own cat, you will be infected, especially if you are 3 to 3 years old. Kittens aged 5 months are most susceptible to infection.

The solution to a cat suddenly contracting feline distemper is:

1. Cats infected with feline distemper will vomit blood in their stools and need to eat and drink intravenously. Infusion is used to replenish water, nutrition and required energy. No food or water can be given until the symptoms completely stop.

2. To fight feline distemper virus, use special serum, antibodies, interferon and other biological agents. Then, according to the different symptoms of the cat’s illness, choose to use gastrointestinal protectants, antiemetics, hemostasis, and white blood cell stimulation. Growth factors, erythroid growth factors and other drugs are used for treatment.

3. If a cat is infected with feline distemper virus, it should be taken to the hospital for diagnosis and treatment in time. Because feline plague can cause cats to suffer from severe vomiting, diarrhea, and even bleeding, dehydration and shock.