Post #4181892
2026-07-28 16:23 UTC
Do COVID tests from 2020 have any efficacy in 2026? I assume not, that tests have degraded and virus mutated. But web search reveals no timely information.
Replies (1)
-
@datum@zeroes.ca 2026-07-28 17:05
@tomjennings@tldr.nettime.org Rapid tests have had very high false negative rates for some years now: https://link.springer.com/article/10.1007/s00430-022-00730-z/tables/3 https://www.medrxiv.org/content/10.1101/2021.12.18.21268018v1.full.pdf https://journals.asm.org/doi/10.1128/spectrum.00749-25 https://www.sciencedirect.com/science/article/pii/S0039914024005265 and that's before considering 6 years of reagents deteriorating.