Single Pfizer jab can reduce asymptomatic Covid infections by 75%

[Northerner]

A single dose of the Pfizer vaccine can reduce asymptomatic infections by 75%, according to research that suggests the jab could substantially curtail transmission of the disease.

Doctors in Cambridge recorded the sharp fall in infections after 12 days of the first shot in an analysis of Covid tests performed on healthcare workers in the last two weeks of January.

The findings build on similarly positive results from Public Health England’s Siren study, which found infections in healthcare workers, some with symptoms and some without, fell by 70% after one dose of the Pfizer vaccine, and by 85% after two. Earlier work found evidence that a single shot of the AstraZeneca vaccine reduced transmission by about 67%.

Single Pfizer jab can reduce asymptomatic Covid infections by 75%

Cambridge doctors record sharp fall in infections after 12 days in Covid test analysis on healthcare workers

www.theguardian.com

 

[trophywench]

Good! - cos Pete's got to have a Covid test tomorrow prior to an examination in hosp on Tuesday .... as long as he tests negative. Main prob right now is he needs an ultrasound scan of waterworks and nearby bits tomorrow morning before the CV test later and been asked to drink 2 pints of water before the scan. His pelvic floor muscles have got plenty of use anyway since his prostatectomy, so hope they can cope with any leakage. When he'd finished talking to them and relayed the conversation I laughed and said 'I wish them well with that then!' he'll be ready to burst in the finish poor chap.

 

[mikeyB]

Hang on a minute, how can you compare protection level of the Pfizer vaccine with the reduction in transmission level of the AZ vaccine? Two different things.