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In reply to the discussion: New CDC studies point to waning immunity from vaccines [View all]BumRushDaShow
(130,034 posts)23. The original initial Pfizer efficacy was found to be 95% (against the variants at the time)
during their controlled trials in 2020 - https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-conclude-phase-3-study-covid-19-vaccine
which was confirmed by the CDC ACIP analysis - https://www.cdc.gov/vaccines/acip/recs/grade/covid-19-pfizer-biontech-vaccine.html
Since then, "real world" efficacy was found to be ~91% with some later variants, which upon the appearance of Delta (and I assume the months that passed since the earlier vaccinations), has declined to 66% - https://www.cdc.gov/mmwr/volumes/70/wr/mm7034e4.htm?s_cid=mm7034e4_w
Have to keep in mind that few if any vaccines are "100% effective". In fact, you are lucky if the annual flu vaccine hits the 60% effectiveness mark.
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Here in Florida CVS and Walgreens have been giving boosters. We got them last week.
Sancho
Aug 2021
#15
first of all, I am not sure this is true. My niece has an immune disease and my sis wanted to
Demsrule86
Aug 2021
#10
I am very grateful...that all my family appears to have survived this...the Georgia Governor is
Demsrule86
Aug 2021
#47
The original initial Pfizer efficacy was found to be 95% (against the variants at the time)
BumRushDaShow
Aug 2021
#23
Now I understand. Many exposed people don't get it is what you are saying I think.
Tomconroy
Aug 2021
#40
That is what my sister's doctor told her about my niece who has an immune disease.
Demsrule86
Aug 2021
#49
Most VAX data STILL shows 95% effective against hospitalizations and death even with Delta and
uponit7771
Aug 2021
#42
Data still shows low death rates among children under 12 from CV infection and it shows people at
uponit7771
Aug 2021
#45
Sure, what's another death or two amongst children? It's low, it's not non-existent.
phylny
Aug 2021
#48
You feel the same with driving right? Seeing there are higher chances of a kid getting killed ...
uponit7771
Aug 2021
#51
No one is saying you should take your grandaugter to an outdoor rock concert.
Tomconroy
Aug 2021
#46