Answer: Vaccines are some of the safest medical products available. Just like any other medical product, there may be risks including side effects(for example, a sore arm or low-grade fever) and go away within a few days. Vaccine development and testing on humans is a highly regulated process. This is to ensure that the vaccine is safe. If a vaccine does receive approval by the regulatory authority, it is continuously monitored for safety and effectiveness.
Question: Who should and should not be vaccinated?
Answer: Because of age, health conditions, or other factors, in rare circumstances, some people should not get certain vaccines or should wait before getting them. Find this more from your health clinic/vaccinator.
Question: Are we overloading or weakening our infants' bodies with too many vaccines?
Answer: Studies show that infants can respond to many antigens at once (Offit et al. Pediatrics 2002;109:124–9). There is no evidence to show that the recommended vaccines and schedule overload or weaken the infant immune system.
Ask VACFA a question: Please feel free to ask VACFA any questions regarding vaccines or immunisation.
You can also look at our Resources and Links page for other websites containing information about vaccines, immunisation and immunology.
Page created on 16 March 2015
Page last updated on 31 May 2019
The Vaccine Safety Net is a global network of websites, evaluated by the World Health Organization, that provide reliable information on vaccine safety.
Vaccines for Africa Initiative (VACFA)
Institute of Infectious Diseases and Molecular Medicine (IDM)
Wernher & Beit North Wing, Room N2.09A
University of Cape Town
Faculty of Health Sciences
Observatory, 7925, Cape Town, South Africa