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Do we have conclusive numbers on how long these vaccines last? I’m reading that Pfizer lasts about 6 months? There’s no way there won’t be a surge again next su

• newsyyswen 5y ago
  There are no conclusive numbers on how long they last, because there has not been a significant drop-off in efficacy yet. There is some evidence that booster shots after 6 months can provide better even better protection than the second shot after 3-4 weeks, but it's not clear whether they will be necessary yet, especially when so much of the world is still desperate to get the first two shots in peoples' arms.
  • dtech 5y ago
    There has been shown a little bit of drop-off, but that is in the range of 95% to 80-90%, so still strong. Hard to say because the mutation in circulation have changed.
  • AndrewBissell 5y ago
    There's been enough drop-off in the Pfizer vaccine that Israel is starting boosters for people 60+. Their estimate is that protection against mild disease has dropped to 40% and protection against hospitalization to 88%. https://swprs.org/covid-vaccines-the-good-the-bad-the-ugly/ https://swprs.org/covid-vaccines-the-good-the-bad-the-ugly/
• tguvot 5y ago
  slide 19: https://context-cdn.washingtonpost.com/notes/prod/default/documents/8a726408-07bd-46bd-a945-3af0ae2f3c37/note/57c98604-3b54-44f0-8b44-b148d8f75165.#page=1 https://context-cdn.washingtonpost.com/notes/prod/default/do... slide 4+: https://www.gov.il/BlobFolder/reports/vaccine-efficacy-safety-follow-up-committee/he/files_publications_corona_two-dose-vaccination-data.pdf https://www.gov.il/BlobFolder/reports/vaccine-efficacy-safet... and in general https://www.nejm.org/doi/full/10.1056/NEJMoa2109072 https://www.nejm.org/doi/full/10.1056/NEJMoa2109072