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Do you have a source for this number? All of the evidence I've seen shows the mRNA vaccines are in the 80% effectiveness range after a single dose, but that dat
by eightysixfour 5y ago
Do you have a source for this number? All of the evidence I've seen shows the mRNA vaccines are in the 80% effectiveness range after a single dose, but that data was not specific to any variants.
- UncleOxidant 5y agoOne study from Qatar: https://www.nejm.org/doi/full/10.1056/NEJMc2104974 https://www.nejm.org/doi/full/10.1056/NEJMc2104974 For preventing infection: B.1.1.7: 29.5% effective after one dose (Pfizer) B.1.351: 16.9% See Table 1 there for more details.
- eightysixfour 5y agoWould have been really nice if they had separated the effectiveness data by days after first dose, we know the curve is substantial for the first few weeks so it would not be surprising for people to still catch it in week one, I would be surprised by data showing <50% effectiveness in week three and four.
- graeme 5y agoI believe the author said people were misinterpreting the study. It included people who caught it before the protection of the first dose kicked in.
- eightysixfour 5y agoCanada has some opposing data: https://www.cdc.gov/mmwr/volumes/70/wr/mm7020e2.htm https://www.cdc.gov/mmwr/volumes/70/wr/mm7020e2.htm