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One year since the first Covid vaccination, what have vaccines achieved?

CNN, 09 Dec 2021
The expectation that Covid-19 vaccines would completely eradicate the virus from society has not come to fruition but evidence shows the vaccines protect people from diseases after catching the virus and has lessened the pressure on ICUs and hospitals around the world. CNN's Cyril Vanier looks back after a year since the rollout of the world's first Covid-19 vaccine.

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