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Related: About this forumWhy you can't compare Covid-19 vaccines
What a vaccine's "efficacy rate" actually means.
In the US, the first two available Covid-19 vaccines were the ones from Pfizer/BioNTech and Moderna. Both vaccines have very high "efficacy rates," of around 95%. But the third vaccine introduced in the US, from Johnson & Johnson, has a considerably lower efficacy rate: just 66%.
Look at those numbers next to each other, and it's natural to conclude that one of them is considerably worse. Why settle for 66% when you can have 95%? But that isn't the right way to understand a vaccine's efficacy rate, or even to understand what a vaccine does. And public health experts say that if you really want to know which vaccine is the best one, efficacy isn't actually the most important number at all.
In the US, the first two available Covid-19 vaccines were the ones from Pfizer/BioNTech and Moderna. Both vaccines have very high "efficacy rates," of around 95%. But the third vaccine introduced in the US, from Johnson & Johnson, has a considerably lower efficacy rate: just 66%.
Look at those numbers next to each other, and it's natural to conclude that one of them is considerably worse. Why settle for 66% when you can have 95%? But that isn't the right way to understand a vaccine's efficacy rate, or even to understand what a vaccine does. And public health experts say that if you really want to know which vaccine is the best one, efficacy isn't actually the most important number at all.
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Why you can't compare Covid-19 vaccines (Original Post)
NurseJackie
Apr 2021
OP
they just paused J&J in Md out of caution; because of 6 incidents of blood clots
magicguido
Apr 2021
#9
Ocelot II
(115,674 posts)1. Very interesting, thanks for posting.
plcdude
(5,309 posts)2. Very helpful
Thank you
BarbD
(1,192 posts)3. Excellent information. Knowledge is power.
jimfields33
(15,769 posts)4. Very informative.
Glad I got Pfizer but if they gave me any other, Id feel better watching this video.
Hekate
(90,644 posts)5. KnR
Kali
(55,007 posts)6. that was a good video
Rhiannon12866
(205,195 posts)7. Thanks! This was very informative!
I know people who have gotten whatever they could and of course everyone's anxious about it. I got the Moderna, the first one I had the opportunity to get (like Dr. Fauci said), and felt pretty good about it when I learned that this was the one that Dr. Fauci got, too!
smirkymonkey
(63,221 posts)8. Thank you for this!
Very helpful!
magicguido
(6,315 posts)9. they just paused J&J in Md out of caution; because of 6 incidents of blood clots