Do Vaccines Cause Ataxia?

Conclusion Natural mumps and varicella infections are associated with acute cerebellar ataxia. Thus, mumps and varicella vaccines prevent ataxia by protecting against natural infection. Vaccines currently routinely recommended to the general population in the U.S.* have not been shown to cause ataxia. Epidemiological Evidence The 2012 report by the Institute of Medicine (IOM), now called […]

Do Vaccines Cause Hypersensitivity Reactions?

Conclusion Vaccines can very rarely cause immediate hypersensitivity reactions (i.e. anaphylaxis, angioedema, and/or hives) usually within minutes, but up to several hours of vaccination in persons with allergy to a vaccine component. Also, vaccines can cause large local swelling reactions or nodules at the injection site due to delayed-type hypersensitivity reactions. International consensus for evaluation […]

Do Vaccines Cause Seizures?

Conclusion Fever is a common symptom of many natural infections, including bacteria such as diphtheria, pertussis, meningococcus and pneumococcus, and viruses such as hepatitis A, hepatitis B, influenza, measles mumps, rubella, polio, rotavirus and varicella. Fever is associated with febrile seizures in infants. Thus, many vaccines prevent fever and febrile seizures by protecting against natural […]