Why you can’t compare Covid-19 vaccines

  • last year
What a vaccine’s “efficacy rate” actually means
Transcript
00:01This is the new one-dose Covid-19 vaccine
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undefined:undefinedeverything I can
00:20to make sure the residents
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undefined:undefinedJust 66%.
00:41And if you only look at these numbers,
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undefined:undefinedwhat vaccines are even supposed to do.
01:06A vaccine’s efficacy rate
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undefined:undefinedto live their lives,
01:23while scientists monitor whether or not
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undefined:undefinedgroups determines a vaccine’s efficacy.
01:45If the 170 were evenly split,
01:47that would mean you’re just as likely
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undefined:undefinedthere were 162 in the placebo group,
02:10and just eight
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undefined:undefinedapplies to the individual.
02:33So, each vaccinated person is 95% less likely
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undefined:undefinedvery different circumstances.
02:55"So, one of the biggest considerations here,
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undefined:undefinedcompletely in the US, here, in the summer.
03:13The Pfizer/BioNTech trial was primarily
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undefined:undefinedcountries, primarily South Africa and Brazil.
03:36And in these other countries,
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undefined:undefinedin these countries;
03:50variants that are more likely
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undefined:undefinedsignificantly reduced infections.
04:08"If you're trying to make one-to-one,
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undefined:undefinedPfizer and Moderna's vaccines,
04:21and redo their clinical trial at the same time
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undefined:undefinedbest number to judge a vaccine by anyway.
04:44Because preventing any infection at all is
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undefined:undefinedof an exposure to Covid-19 like this:
05:05The best-case scenario
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undefined:undefinedmain objective of Covid-19 vaccines.
05:29The real purpose is to give your body enough
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undefined:undefinedof these Covid-19 vaccines do well.
05:47In all these trials, while some people in
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undefined:undefined100% effectiveness in protecting from death."
06:10The mayor of Detroit did backtrack, and said
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undefined:undefinedyou from any Covid infection,
06:29but which one will keep you alive?
06:31Or out of the hospital?
06:33Which one will help end the pandemic?
06:36And that’s any of them.
06:38"The best vaccine right now for you
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