https://www.cureus.com/articles/191570-post-covid-19-vaccination-infection-among-adults-in-saudi-arabia-a-cross-sectional-study
Background: While vaccines were one of the most effective tools to combat the COVID-19 pandemic, breakthrough infections have been reported.
Aim of the work: We aim to evaluate the effectiveness of Pfizer and AstraZeneca vaccines in preventing breakthrough…
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