A new, rigorous and important study of Covid transmission—with or without prior vaccination—in 621 people with mild infections
Just published @TheLancetInfDis
thelancet.com/lancet/article…
Vaccination reduced spread, but it still occurred in household contacts (unvaxx 38%, vaxx 25%)
Just published @TheLancetInfDis
thelancet.com/lancet/article…
Vaccination reduced spread, but it still occurred in household contacts (unvaxx 38%, vaxx 25%)
Viral load was assessed from 8145 respiratory tract samples for up to 20 days, irrespective of symptoms
The peak load (Delta variant) was similar for unvaccinated vs vaccinated cases, but faster clearance in the latter
All breakthrough cases were mild
The peak load (Delta variant) was similar for unvaccinated vs vaccinated cases, but faster clearance in the latter
All breakthrough cases were mild
From the accompanying editorial
thelancet.com/pb-assets/Lanc…
“This study unfortunately also highlights that the vaccine effect on reducing transmission is minimal in the context of Delta variant circulation”
thelancet.com/pb-assets/Lanc…
“This study unfortunately also highlights that the vaccine effect on reducing transmission is minimal in the context of Delta variant circulation”
Impact of time from vaccination in the study
This prescient essay by @Craig_A_Spencer @TheAtlantic
has now been quantified by this new study, both for household and any contacts. Not as likely. theatlantic.com/ideas/archive/…
has now been quantified by this new study, both for household and any contacts. Not as likely. theatlantic.com/ideas/archive/…
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