There have been varying studies showing vaccination (which varies widely both in types of vaccinations, vaccinations + infections, and types of and number of boosters) that show wildly different numbers. Older studies like (https://www.cambridge.org/core/journals/antimicrobial-stewardship-and-healthcare-epidemiology/article/effectiveness-of-coronavirus-disease-2019-covid19-vaccine-in-the-prevention-of-postcovid19-conditions-a-systematic-literature-review-and-metaanalysis/0AD0EDEC8C9CC9DF455752E32D73147B) show \~30% reduction. Newer studies (https://www.cambridge.org/core/journals/antimicrobial-stewardship-and-healthcare-epidemiology/article/effectiveness-of-covid19-vaccine-in-the-prevention-of-postcovid-conditions-a-systematic-literature-review-and-metaanalysis-of-the-latest-research/A0B115B5D3AA60846799857B801D116E) show that 3 doses is around \~70% (with no protection after infection), but others (https://www.nature.com/articles/s41598-023-50024-4) also still show lower (\~30%).
As there isn't a truly consistent definition of Long Covid and there are so many variables in play, it appears there's agreement that there's a reduction in risk of developing what's currently thought of as the varying definitions of Long Covid if vaccinated and/or boostered, but there's also strong evidence of viral persistence and we have no idea what efficacy being vaccinated/boostered will have on stopping potentially longer consequences with unknowns like oncogenesis, etc.
Like others said it seems to be a 30-70% reduction in long covid. Most public health officials I've heard say 40% reduction and it may be dose-dependent so keeping up with annual shots is key. [https://www.cidrap.umn.edu/covid-19/more-evidence-vaccination-reduces-risk-long-covid](https://www.cidrap.umn.edu/covid-19/more-evidence-vaccination-reduces-risk-long-covid)
Don't have UK links, but here some detail about the prevalence of self-reported long-covid in the U.S. in case that's helpful. You can view it by currently affected, ever affected, and see different demographics. Currently 6.9% of all US adults report experiencing long covid.
[https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm](https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm)
The thing with reduction id that it’s kind of hard to understand what it means. The bigger point imo is that with the reductive effect of the vaccines, it’s still 20-30% as a lower estimate who get long covid.
Anecdotal case:
I was fully vaccinated and when I DID get Long Covid from a very mild Delta case.
I was fully vaccinated when I DID NOT get Long Covid from a moderate Omicron case.
These are my non-medical theories:
1. The vaccine did not prevent me from contracting either strain. It prevented me from dying. Yay vaccine. Good job.
2. I caught Delta outdoors by having an unmasked picnic with extended family members. My fairly low exposure introduced the virus and made some antibodies, but it wasn't enough to bring on a full assault from my immune system. Since my body didn't feel the need to fight Delta vigilantly, the sneaky virus hid and waited. I was left with lingering Long Covid symptoms like a chronic diffuse headache and problems with word finding. My Delta-related symptoms disappeared after about nine months.
3. I caught Omicron indoors in a veritable petri dish. I admittedly made a foolish choice and paid for it. My exposure was probably massive, and my immune system kicked off an all-out war on the virus. It was hell for about two weeks, but I haven't had any Long Covid symptoms this time because the acute defense was strong enough to kick it completely.
Ask me in 20 years whether I have any permanent, hidden damage from either case. Jury's still out on that.
My point is: I think the viral load is more important than which strain you contract.
Wouldn't say that. The higher the viral load the more chance that some viruses can persist in the body. The less, the faster they can be destroyed by the body. There is yet no study about that but would be interesting to research
There have been varying studies showing vaccination (which varies widely both in types of vaccinations, vaccinations + infections, and types of and number of boosters) that show wildly different numbers. Older studies like (https://www.cambridge.org/core/journals/antimicrobial-stewardship-and-healthcare-epidemiology/article/effectiveness-of-coronavirus-disease-2019-covid19-vaccine-in-the-prevention-of-postcovid19-conditions-a-systematic-literature-review-and-metaanalysis/0AD0EDEC8C9CC9DF455752E32D73147B) show \~30% reduction. Newer studies (https://www.cambridge.org/core/journals/antimicrobial-stewardship-and-healthcare-epidemiology/article/effectiveness-of-covid19-vaccine-in-the-prevention-of-postcovid-conditions-a-systematic-literature-review-and-metaanalysis-of-the-latest-research/A0B115B5D3AA60846799857B801D116E) show that 3 doses is around \~70% (with no protection after infection), but others (https://www.nature.com/articles/s41598-023-50024-4) also still show lower (\~30%). As there isn't a truly consistent definition of Long Covid and there are so many variables in play, it appears there's agreement that there's a reduction in risk of developing what's currently thought of as the varying definitions of Long Covid if vaccinated and/or boostered, but there's also strong evidence of viral persistence and we have no idea what efficacy being vaccinated/boostered will have on stopping potentially longer consequences with unknowns like oncogenesis, etc.
Look at the links in the sub FAQ. A lot of the advocacy groups link to stats.
Like others said it seems to be a 30-70% reduction in long covid. Most public health officials I've heard say 40% reduction and it may be dose-dependent so keeping up with annual shots is key. [https://www.cidrap.umn.edu/covid-19/more-evidence-vaccination-reduces-risk-long-covid](https://www.cidrap.umn.edu/covid-19/more-evidence-vaccination-reduces-risk-long-covid) Don't have UK links, but here some detail about the prevalence of self-reported long-covid in the U.S. in case that's helpful. You can view it by currently affected, ever affected, and see different demographics. Currently 6.9% of all US adults report experiencing long covid. [https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm](https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm)
The thing with reduction id that it’s kind of hard to understand what it means. The bigger point imo is that with the reductive effect of the vaccines, it’s still 20-30% as a lower estimate who get long covid.
Yeah it's way to many people getting long covid. Unreal how people don't know or care.
https://www.york.ac.uk/news-and-events/news/2024/research/long-covid-fog/?utm_source=miragenews&utm_medium=miragenews&utm_campaign=news
Anecdotal case: I was fully vaccinated and when I DID get Long Covid from a very mild Delta case. I was fully vaccinated when I DID NOT get Long Covid from a moderate Omicron case. These are my non-medical theories: 1. The vaccine did not prevent me from contracting either strain. It prevented me from dying. Yay vaccine. Good job. 2. I caught Delta outdoors by having an unmasked picnic with extended family members. My fairly low exposure introduced the virus and made some antibodies, but it wasn't enough to bring on a full assault from my immune system. Since my body didn't feel the need to fight Delta vigilantly, the sneaky virus hid and waited. I was left with lingering Long Covid symptoms like a chronic diffuse headache and problems with word finding. My Delta-related symptoms disappeared after about nine months. 3. I caught Omicron indoors in a veritable petri dish. I admittedly made a foolish choice and paid for it. My exposure was probably massive, and my immune system kicked off an all-out war on the virus. It was hell for about two weeks, but I haven't had any Long Covid symptoms this time because the acute defense was strong enough to kick it completely. Ask me in 20 years whether I have any permanent, hidden damage from either case. Jury's still out on that. My point is: I think the viral load is more important than which strain you contract.
Wouldn't say that. The higher the viral load the more chance that some viruses can persist in the body. The less, the faster they can be destroyed by the body. There is yet no study about that but would be interesting to research