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Staying quiet for a whole year: is this the real efficacy of coronavirus vaccines?

Staying quiet for a whole year: is this the real efficacy of coronavirus vaccines?

Medicomunicare Magazine | Health and Medical News
The existence SARS-CoV-2 coronavirus variants of concern that may better evade immunity established by vaccination or past infection by the wild-type form of the virus has been noted since early in the pandemic, with mutations to the receptor-binding domain and spike protein already having been seen to increase transmissibility in some lineages. The duration of protection conferred
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