> So the CDC is just junk science? This particular study certainly is. The Pulse Survey cited was not a rigorous longitudinal case/control study, but rather a

> So the CDC is just junk science? This particular study certainly is. The Pulse Survey cited was not a rigorous longitudinal case/control study, but rather a voluntary online poll with a dismal response rate of only 4-6% [0]. This could easily result in selection bias: people suffering from (or who just believe they’re suffering from) long COVID are much more likely to respond than healthy people. Indeed, the CDC admits that it only attempted to adjust for nonresponse bias based on geographical area [1], and not anything related to actually having (long) COVID. The results of this study are totally meaningless at best, and disinformation at worst. [0] https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm [1] https://www2.census.gov/programs-surveys/demo/technical-documentation/hhp/2020_HPS_NR_Bias_Report-final.pdf https://www2.census.gov/programs-surveys/demo/technical-docu...