CDC: 25% vaccine breakthrough in Los Angeles County up to July 2021

During May 1–July 25, 2021, among 43,127 SARS-CoV-2 infections in residents of Los Angeles County, California, 10,895 (25.3%) were in fully vaccinated persons, 1,431 (3.3%) were in partially vaccinated persons, and 30,801 (71.4%) were in unvaccinated persons....More...

USA: 3,620 coronavirus vaccine breakthrough cases reported in California – up ~600 in one week. 150 hospitalized and at least 20 dead

California has reported 3,620 so-called breakthrough cases of coronavirus infections in people who were fully vaccinated since Jan....More...

Evidence for increased vaccine breakthrough rates of coronavirus variants of concern in BNT162b2 Pfizer-BionTech mRNA vaccinated individuals

Here, we performed a case-control study that examined whether BNT162b2 (Pfizer-BionTech) vaccinees with documented SARS-CoV-2 infection were more likely to become infected with B.1.1.7 or B.1.351 compared with unvaccinated individuals....More...

Washington State: 102 coronavirus vaccine breakthrough cases reported, 8 hospitalizations, 2 deaths

Out of one million fully vaccinated individuals in Washington state, epidemiologists report evidence of 102 breakthrough cases since February 1, 2021, which represents .01 percent of vaccinated people in Washington....More...