Category: Testing

Transmission of SARS-CoV-2 from asymptomatic and presymptomatic individuals in healthcare settings despite medical masks and eye protection

We describe 3 instances of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission despite medical masks and eye protection, including transmission despite the source person being masked, transmission despite the exposed person being masked, and transmission despite both parties being masked.  More...

Coronaheadsup.com Coronavirus, Genome, Healthcare, Hospitalization, Infection, Testing, Transmission, Treatment

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...

Coronaheadsup.com B.1.617.2, California, Coronavirus, Delta, Hospitalization, Infection, Janssen, Moderna, Pfizer/Biontech, Testing, Transmission, USA, Vaccine, Vaccine Breakthrough, Vaccine Waning, Variants

The future of Sars-CoV-2: Multiple vaccine breakthrough infections in one patient

The patient had three RT-PCR confirmed SARS-CoV-2 infections. Two breakthrough infections occurred in quick succession with the first over 3 weeks after complete vaccination with COVISHIELD and despite post-vaccination seroconversion.  More...

Coronaheadsup.com Alpha, B.1.1.7, B.1.617.2, Coronavirus, Delta, Evolution, Herd Immunity, Hospitalization, Infection, Long Covid, Symptoms, Testing, Transmission, Vaccine, Vaccine Breakthrough, Vaccine Waning