Early forms of vaccination development

Through December the first two vaccines against COVID-19 were approved by Health Can-ada and phase one of the vac-cine campaign has begun. One of the things that is much dis-cussed in relation to vaccines is their efficacy. While vaccines may not always be 100% effective at protecting against contracting a disease or virus, over our recent history, there is much that proves overall vaccines are a highly effective measure in preventing, reducing the effects or even eradicating certain viruses or diseases.

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