Category: Transmission
AY.4 Delta sub-lineage now predominant in UK and Australia, rising in the US
A post on the AY.4 sub-lineage of the Delta Sars-Cov-2 variant. More...
USA: doctors see a surge in critically ill pregnant women with Covid
“None of us has ever seen this magnitude of really, really sick women at one time,” said Dr. More...
Children now account for 36% of Tennessee’s virus cases
Children now make up 36% of Tennessee’s reported COVID-19 cases, marking yet another sobering milestone in the state’s battle against the highly contagious delta variant, Health Commissioner Lisa Piercey said Wednesday. More...
Britain surrenders to the coronavirus
“We can’t control the spread of the virus. The virus is doing what it’s doing and we have to react to that”. More...
Having SARS-CoV-2 once confers much greater immunity than Pfizer vaccine
“The natural immune protection that develops after a SARS-CoV-2 infection offers considerably more of a shield against the Delta variant of the pandemic coronavirus than two doses of the Pfizer-BioNTech vaccine, according to a large Israeli study that some scientists wish came with a “Don’t try this at home” label. More...
USA: 20% vaccine breakthrough in Snohomish County, Washington State
“In May 2021, fewer than 5% of cases were among vaccinated individuals. More...
UK Covid app confirms vaccines are waning
Joinzoe: “We found that initial protection against infection a month after the second dose of the Pfizer vaccine was 88%, while after five to six months this fell to 74%. More...
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...
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...
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...