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California nurse tests positive over a week after receiving Pfizer vaccine
- amacalac 6y agoThis is not a surprise. It takes 2 weeks before the first dose is effective, and 3 weeks after the first dose, a second dose is required to boost the efficacy. It’s 2 weeks after the second dose that the vaccine takes about 95% efficacy.
- drKarl 6y agoAlso, it's 95% effective, so it's expected to have a 5% failure rate
- DanBC 6y agoWhat does "95% efficiency" actually mean?
- _Microft 6y agoThe third phase trial was double-blinded and when they unblinded it, it turned out that of all the people (170 persons) who got infected, only 5% (8 persons) were in the group of those who got the real vaccine. https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-conclude-phase-3-study-covid-19-vaccine https://www.pfizer.com/news/press-release/press-release-deta...
- rualca 6y agoIt means that it's double blind study showed that only 5% of those who took the vaccine contracted and developed covid19 symptoms when compared with the placebo group. https://www.nytimes.com/2020/12/13/learning/what-does-95-effective-mean-teaching-the-math-of-vaccine-efficacy.html https://www.nytimes.com/2020/12/13/learning/what-does-95-eff...
- deleted 6y ago[deleted]
- layer8 6y ago“5% of those who took the vaccine developed covid19 symptoms” is somewhat misleading. Rather, for a vaccine and a placebo group of the same size, the number of people in the vaccine group who developed covid19 symptoms (only 0.037% of that group) was 5% the number of people in the placebo group who developed covid19 symptoms (0.74% of that group).
- rualca 6y ago> “5% of those who took the vaccine developed covid19 symptoms” is somewhat misleading. You misquoted me for some reason. I explicitly stated that "only 5% of those who took the vaccine contracted and developed covid19 symptoms when compared with the placebo group." This is a direct quote of what I actually said, which bears no resemblance to your comment.
- vinay_ys 6y agoVaccines have "efficacy" (lab conditions) and "effectiveness" (real-world conditions) as two different metrics. Vaccine efficacy- % reduction in disease incidence in a vaccinated group compared to an unvaccinated group under optimal conditions (example: Randomized Control Trial). Vaccine effectiveness- ability of vaccine to prevent outcomes of interest in the “real world”. This short interview with a virologist is interesting for contrasting between different vaccines https://www.youtube.com/watch?v=d2KVKn0BvlM https://www.youtube.com/watch?v=d2KVKn0BvlM
- blackrock 6y agoGeez, they need a more clear term. It’s no wonder, nobody understands what the hell they’re talking about. They should use: theoretical vs. real world, instead.
- pmoriarty 6y agoNot only that, but she could have been infected before she was vaccinated.
- throwaway4good 6y agoI wonder if she changed her behavior wrt corona precautions after she had her vaccine shot.
- killercup 6y agoThis is as suprising as the amount of comments assuming the nurse is female. Edit for those who just comment after reading the headline: The article clearly states the nurse is Matthew W. and uses the he pronoun in the following sentences.
- hh3k0 6y agoIt's a reasonable assumption, considering that 90% of the nurses in the US are female.
- ErikBjare 6y agoBut why make the assumption at all? 90% or not, in this case it was wrong.
- hh3k0 6y agoThat's true -- maybe they merely skimmed over the article. That's the kind of info I'd probably miss when just skimming over something, too.
- melling 6y agoIf you condition on having read the article, you would know it’s a male nurse: “ Matthew W., a nurse at two different local hospitals, said in a Facebook post on December 18 that he had received the Pfizer vaccine”
- blackrock 6y agoNurses make really good money in the United States. And it is always in demand. With the union rules and all the mandatory overtime, they can earn well over six figures. The salaries are easily comparable to some senior software engineering salaries. And they can reach that level a lot faster than some engineers can. They can also work at multiple hospitals, to further boost their income. Given all that, it’s reasonable to assume that some men will enter the profession also.
- _Microft 6y ago
- rado 6y agoMisleading sensationalist headline. First dose ≠ immunity.
- rnestler 6y ago> Six days later on Christmas Eve, he became sick after working a shift in the COVID-19 unit, the report added. Since when are six days "more than a week"?
- rvieira 6y agoThis is to be expected, if only statistically.