Is a single dose of the vaccine enough?





Although the clinical trial data is encouraging, the real-world evidence regarding the covid-19 vaccine remains sparse. In particular, the response to the vaccine among those previously infected with SARS-CoV-2 is not yet fully understood.

Researchers from Bar-Ilan University and Ziv Medical Center now report preliminary evidence that people previously infected with the virus responded very strongly to a dose of the virus. Pfizer vaccineregardless of when they were infected and whether or not they had detectable antibodies to COVID-19. before receiving the vaccine.

Their study, published in the journal Eurosurveillance, was conducted on a cohort of 514 Ziv Medical Center staff.

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