Veterinary & Aquatic Services Department, Drs. Foster & Smith
Is it okay to vaccinate a sick pet?
The decision as to whether an animal who is showing signs of disease should be vaccinated or not needs to be made on an individual basis. One must consider whether the benefits outweigh the risks. Results of a physical examination and possible laboratory tests will aid in the decision. Signs of illness in a young puppy or kitten may need to be interpreted differently than similar signs in an adult animal. In general, if an older animal has a mild upper respiratory disease without a fever, mild diarrhea, or a skin disease unassociated with an immune problem, vaccination is probably OK.