Measles vaccine in puppies has been reported to rarely cause damage to the nervous system. Cerebellar disease has been reported in kittens and puppies less than 5 weeks of age who were vaccinated with a modified live vaccine . Discomfort and swelling at the injection site Pain, swelling, redness and irritation can occur at the injection site. These effects generally occur within 30 minutes to 1 week of the vaccination. If the signs persist, or are severe, contact your veterinarian.
Occassionally abscesses can form at the injection site.
These abscesses are generally not caused by infection, but by the body's over-reaction to the vaccine. Mild fever, decreased appetite and activity Mild fever, decreased appetite and depression may be observed for 1-2 days following vaccination, most commonly when modified live vaccines are used. Generally no treatment is warranted. Cats vaccinated with some Chlamydia vaccines may show weakness, lethargy, lameness, fever and loss of appetite for 1-3 weeks after vaccination. In some instances, medications such as corticosteroids may be used to help alleviate the symptoms.