30% lower than without vaccination – according to this study.
The King’s College London/ZOE app collaboration is the largest longitudinal study of Covid symptoms in the world. Through our work, we have also examined the impact of vaccines on existing Covid-19 symptoms and the chance of developing Long Covid. While it is now widely known that double vaccination reduces the chance of getting infected by around 85 per cent, our work indicates that on top of this, vaccines also decrease the likelihood, if someone does get infected, of developing Long Covid by up to 30 per cent.
Interesting… although that given that the report you link to is also about the ZOE research, and later seems to elaborate on what they mean by “up to” 30% as by saying that “even if a vaccinated individual goes on to contract Covid-19, that person’s chances of developing Long Covid are reduced by a further 30 per cent in the most at-risk age group”, I wonder if this is just a slightly trumped-up way of stating the finding of a significant difference for the older age group alone in the preprint that OP already linked to. (The preprint states: “In the 60+ group, we found lower risk of symptoms lasting for more than 28 days (OR=0.72, 95%CI [0.51-1.00])”.)
Yeah, If I’m reading the preprint correctly, the effect is insignificant in the under 60 group, and the overall odds ratio (of long covid conditional on infection, I think) is basically 1 (Figure 3). I’m not sure if this is about the study being underpowered, or if there’s just no effect.
30% lower than without vaccination – according to this study.
Interesting… although that given that the report you link to is also about the ZOE research, and later seems to elaborate on what they mean by “up to” 30% as by saying that “even if a vaccinated individual goes on to contract Covid-19, that person’s chances of developing Long Covid are reduced by a further 30 per cent in the most at-risk age group”, I wonder if this is just a slightly trumped-up way of stating the finding of a significant difference for the older age group alone in the preprint that OP already linked to. (The preprint states: “In the 60+ group, we found lower risk of symptoms lasting for more than 28 days (OR=0.72, 95%CI [0.51-1.00])”.)
Yeah, If I’m reading the preprint correctly, the effect is insignificant in the under 60 group, and the overall odds ratio (of long covid conditional on infection, I think) is basically 1 (Figure 3). I’m not sure if this is about the study being underpowered, or if there’s just no effect.