SAN DIEGO, U.S.: Administrative data from University of California San Diego Health (UCSDH) shows that, between June and July, a rapid increase occurred in symptomatic SARS-CoV-2 infections in fully vaccinated health care workers. In a letter to the New England Journal of Medicine, UCSDH doctors said that the surge appeared to show the effects of waning immunity compounded by relaxed health measures and the spread of the more transmissible delta (B.1.617.2) variant in California.
COVID-19 surges among vaccinated health care workers
