The benefit of vaccination after previous SARS-CoV-2

Information on the strength of safety conferred by SARS-CoV-2 infection and vaccination is of paramount importance for international

This range has likely expanded exponentially with the spread of the omicron version,

 the most transmissible version of SARS-CoV-2 to date, suggesting that the majority of the world's populatio

 As with previous infections, vaccines induce a memory response and protection against COVID-19

the combination of SARS-CoV-2 infection and vaccination (hybrid immunity) offers the highest rate of safety.

Without However, the strength of this protection against reinfection and severe disease remains undefined.

the Lancet Infectious Diseases, Niklas Bobrovitz and colleagues 3 present the results of a well-conducted systematic

There were important findings in series 1 compared with the booster dose in cases of prior infection

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