SARS-CoV-2 Infection after Vaccination in Health Care Workers in California

Study at 2 healthcare institutions (n=36,659) found a positivity rate for SARS-CoV-2 infection at 2 or more weeks after the second vaccine dose (Pfizer or Moderna) of 0.05%. Most reported infections during the vaccine schedule were noted in weeks 1-3 after the first dose.

New England Journal of Medicine