Initial efficacy of vaccines against COVID-Delta - July 20, 2021

Coronavirus Update 127: Delta Variant and Vaccines YouTube

Roger Seheult

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Perhaps Phizer vaccine fades with time if 2 doses are only 3 weeks apart
Vaccine effectiveness may drop to only 16% in 6 months if time between jabs was only 3 weeks – July 2021


Initial efficacy of 3 vaccines against COVID-19 variants - July 31, 2021

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J&J 1 Shot Wash Post Aug 10
"up to 95 percent effective in preventing delta variant-caused death and up to 71 percent effective in averting hospitalizations."
Note: not average, but up to
Does the up to exclude the obese, the elderly, those with comorbidities, etc?


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