In the graph we can see how the effectiveness of COVID-19 vaccines in the two strains evolves over the weeks. Although vaccines are less effective with Ómicron than with Delta, boosters restore effectiveness almost completely.

In the graph we can see how the effectiveness of COVID-19 vaccines in the two strains evolves over the weeks. Although vaccines are less effective with Ómicron than with Delta, boosters restore effectiveness almost completely.

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