A study by researchers from Bar-Ilan University and the Ziv Medical Center has found that one dose of the COVID-19 vaccine provokes a strong immune response in those previously infected, regardless of the duration between infection and vaccination.  The study, whose findings were recently published in the journal  Eurosurveillance, was conducted on a cohort of 514 staff members at Ziv Medical Center. Seventeen of them had been infected with COVID-19 sometime between one and ten months before receiving the first dose of the vaccine. Antibody levels of the entire cohort were measured prior to vaccination and thereafter, to determine response to the vaccine. 

According to the researchers, the response among those previously infected was so effective that it opens the debate as to whether one dose of the vaccine may suffice for the previously infected. In Israel, people who have recovered from coronavirus are currently not among the priority groups for vaccination.

KAN reporter Naomi Segal heard more from  Prof. Michael Edelstein, of the Azrieli Faculty of Medicine of Bar-Ilan University, who led the study.