Self-defence classes for our immune system

By Andy Extance and Jenny Koenig2019-07-01T12:34:00

An image showing a nurse waiting to administer Malaria vaccine

Source: © Amos Gumulira/AFP/Getty Images

Andy Extance finds out how vaccines help people fight off germs without getting ill

Vaccines protect us from illnesses caused by bacteria and viruses, and do so by training our bodies to fight specific infections. Andy Extance finds out more about the chemistry involved in producing these important medicines.

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