Travelers can unknowingly bring these diseases into the country, and if we were not protected by vaccinations these diseases could quickly spread. We should still be vaccinated, both to protect ourselves and those around us. Giving multiple vaccinations for different diseases at the same time increases the risk of harmful side effects and can overload the immune system. Our immune system is exposed to many disease-causing agents every day. New bacteria enter our body from the food we eat, and numerous bacteria and viruses are present in our mouth and nose.
Scientific studies show no ill effects of multiple vaccines on the normal immune system.
Health Canada would not recommend any combination vaccine until studies showed it to be both safe and effective. Insert your email address here if you would like a response Your privacy Excerpts of reader comments may be reproduced, although contributors will not be identified.