The hope is that the closer we match the strain, the better protection one will have, and perhaps the longer the protection we'll have.
The vaccine is not intended to be perfect. It's not going to absolutely prevent COVID-19, but we want to prevent serious cases that lead to hospitalization or death.
The new vaccines should cut the risk of getting COVID by 60% to 70% and reduce the risk of getting seriously ill by 80% to 90%.
It's important to get vaccinated in a timely manner; right now the match is reasonably close, likely providing the most benefit.
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