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Do Vaccines Work?

Have vaccines helped humanity?
syringe going into vaccine bottle
© BSAC
Vaccines have been described as the most effective intervention in modern medicine. They have prevented at least 10 million deaths between 2010 and 2015, and protected many millions more from illness, WHO 2017.
Vaccines have different modes of action. Watch the following video to find out more about how they work:

This is an additional video, hosted on YouTube.

A clear relationship has repeatedly been seen between vaccine introduction and dramatic reductions in disease, as illustrated in the below video made by the British Society of Immunology.

This is an additional video, hosted on YouTube.

As well as saving lives, vaccines have a profound effect on society: reducing the burden of sickness and disability and promoting political and economic stability, as summarised in the figure below.
GAVI: Vaccines saving lives and boosting economies flow chart
© BSAC
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The Role of Vaccines in Preventing Infectious Diseases and Antimicrobial Resistance

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