Categories: vaccinations

Can cat vaccinations cause diarrhoea?

Yes, cat vaccinations can cause diarrhoea. Sometimes cats have an allergic reaction to a vaccine. These are called type I hypersensitivity responses or anaphylaxis. It is a well documented adverse response associated with vaccine administration in companion animals.

Nasty reaction to cat vaccine

The hypersensitivity reaction usually occurs within minutes and shows in symptoms of diarrhoea, vomiting, upper respiratory issues such as sneezing and coughing. Other symptoms include anaphylactic shock, issues with the cardiovascular system, gastrointestinal tract, respiratory system and skin. There may be cardiovascular collapse. It appears that in very rare cases the reaction may prove fatal.

The treatments include the administration of anti-inflammatory agents such as antihistamines, corticosteroids or epinephrine. Cats suffering from an allergic reaction need to be monitored for at least 48 hours because a relapse might occur.

Source: Brooks R. Adverse reactions to canine and feline vaccines. Australian Veterinary Journal, 68:342-344 (1991) as referred to in Linda P Case’s The Cat.

Note: I am not a vet. I have a studied biology and am a careful researcher.

Some more on cat vaccinations

Percentage of adverse reactions to vaccines in cats

The percentage of suspected adverse reactions to vaccines in cats was assessed in the largest British published survey as referred ...
Read More

Is this the best way ever for a vet to give a cat a jab?

Is this the best way ever for a vet to give a cat a shot 🐱 ? The distraction of ...
Read More

Are cat vaccinations really necessary?

The word necessary means 'essential'. So are cat vaccinations really essential? You cannot say that cat vaccinations are essential. This ...
Read More

Anti-vaccination pet owners are putting their pets at risk. Discuss.

In the UK, veterinarians believe that millions of dogs, cats and rabbits are being put at risk to potentially fatal ...
Read More

Ninety-eight percent of veterinarians challenged by owners about vaccinations

In the UK cat owners are going off the idea of vaccinating their cat. Is the same trend occurring in ...
Read More
Michael Broad

Hi, I'm a 71-year-old retired solicitor (attorney in the US). Before qualifying I worked in many jobs including professional photography. I have a girlfriend, Michelle. I love nature, cats and all animals. I am concerned about their welfare.

Recent Posts

Why are tigers orange and not green?

The tiger attacks color-blind animals The main reason why tigers are orange and not green…

6 hours ago

How do I know my cat has a temperature?

Not a lot of use How do I know my cat has a temperature? I…

10 hours ago

Routines can set up unhelpful domestic cat habits

I was reminded today that a cat guardian can inadvertently set up, through routines, unhelpful…

17 hours ago

Signs that your cat wants another cat?

This is an interesting but difficult topic. Are there signs that your cat wants a…

19 hours ago

Can smoking marijuana around my cat cause her harm?

Marijuana is also known as cannabis, weed, pot, dope or grass. The best way to…

20 hours ago

Are calico cats healthy?

The genetics of calico cats are complicated and I don't pretend to fully understand the…

1 day ago