2021.01.17 13:15 GMT+8

What kind of protection can COVID-19 vaccines offer?

Updated 2021.01.17 14:32 GMT+8
CGTN

As countries around the world begin vaccinating against COVID-19, there are still things we don't know about the kind of protection it offers. For example, will the vaccines stop people from passing on the disease? CGTN's Nicole Johnston takes a look from London.

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