@BillGates: RT @gavi: Vaccines prevent millions of deaths every year by harnessing the body’s immune system to create defences against future infection. But how exactly do #VaccinesWork? Read our latest explainer: https://t.co/4wrKVmgwCN
http://twitter.com/BillGates
Vaccines prevent millions of deaths every year by harnessing the body’s immune system to create defences against future infection. But how exactly do #VaccinesWork? Read our latest explainer: https://t.co/4wrKVmgwCN
— Gavi, the Vaccine Alliance (@gavi) August 11, 2020
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