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Now tracking the new emerging South Africa Omicron Variant

Delta limits vaccines

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Dutch Josh View Drop Down
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Joined: May 01 2013
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    Posted: August 18 2021 at 9:07pm

[url]https://www.livemint.com/news/world/covid19-vaccines-less-effective-against-delta-variant-study-11629330951770.html[/url] or https://www.livemint.com/news/world/covid19-vaccines-less-effective-against-delta-variant-study-11629330951770.html ;

“We’re seeing here the real-world data of how two vaccines are performing, rather than clinical trial data, and the data sets all show how the delta variant has blunted the effectiveness of both the Pfizer and AstraZeneca jabs," said Simon Clarke, an associate professor in cellular microbiology at the University of Reading.

Pfizer's shot remained less effective in comparison with AstraZeneca at preventing infections with a high viral burden in roughly 4.5 months after the second dose, said Koen Pouwels, an Oxford senior researcher who helped lead the study.

“The higher levels of virus that we’re seeing in these infections in vaccinated people are consistent with the fact that unvaccinated people are just going to be at higher risk, I’m afraid," said Sarah Walker, a professor of medical statistics and epidemiology at Oxford, who helped lead the study.

DJ After three monts since second vaccination AstraZeneca protection 61%, Pfizer 75% (against severe disease ?). Viral parts/load in vaccinated and unvaccinated the same...

How this will translate in what to expect ? If vaccinations could limit people getting infected (including asymptomatic infections) and if the vaccinated that did get infected would be spreading less viral load for a shorter time-then vaccinations can be still a major factor in stopping this pandemic....

If most of the vaccine effect would-only-be in protection against severe disease, maybe 10-50% protection against infection, and infected vaccinated spread the same amount of viral parts for the same time the need for much more restrictions/NPI is URGENT !!!

DJ-Some studies indicate exponential growth of the R0 in variants...each new variant 1,5 times more infectious then the one that started the earlier wave. Delta R0= between 5 and 8 next variant (certainly with vaccines) may show R0 of 12...

Delta is allready airborne...1,5-2 meter social distance may not be enough to prevent infection...

Reopening schools without masks, social distancing, ventilation, vaccination is criminal !

We cannot solve our problems with the same thinking we used when we created them.
~Albert Einstein
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