| Public Health Agency of Canada | Following a smallpox epidemic in 1816 the ordered smallpox vaccine and requested the English veterinarian to help in launching a vaccination campaign |
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| These are both based on the idea that people with a strong are at risk for accidentally infecting the many people they come into contact with and will have other highly connected people among their contacts | Note: Menactra should be administered either before or at the same time as DTaP |
In 1798, Jenner published An Inquiry into the Causes and Effects of the Variolae Vacciniae which created widespread interest.
29| The Politics of Vaccination: Practice and Policy in England, Wales, Ireland, and Scotland, 1800-1874 | A History of Infectious Diseases and the Microbial World |
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| An allergic reaction could occur after the vaccinated person leaves the clinic | Some studies have claimed to show that current vaccine schedules increase infant mortality and hospitalization rates; those studies, however, are correlational in nature and therefore cannot demonstrate causal effects, and the studies have also been criticized for the comparisons they report, for ignoring historical trends that support an opposing conclusion, and for counting vaccines in a manner that is "completely arbitrary and riddled with mistakes" |
The risk of side effects varies from one vaccine to the next, but below are examples of side effects and their approximate rate of occurrence with the vaccine, a common childhood vaccine.
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