Discover and read the best of Twitter Threads about #Transmissions
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How effective are #COVID vaccines against #transmissions?
Key points:
1-Vaccination reduces transmission of #Delta, but by less than #Alpha
2-Alpha: Pfizer 62%, AZ 38% reduction
Delta: Pfizer 37%, AZ 15% reduction (aOR)
3-The impact of vaccination decreased over time 1/
Key points:
1-Vaccination reduces transmission of #Delta, but by less than #Alpha
2-Alpha: Pfizer 62%, AZ 38% reduction
Delta: Pfizer 37%, AZ 15% reduction (aOR)
3-The impact of vaccination decreased over time 1/
4-Vaccinated people with breakthrough infections were less likely to spread Covid.
5-Vaccination not only reduces the risk of becoming seriously ill from the virus, it also protects those around you. 2/
5-Vaccination not only reduces the risk of becoming seriously ill from the virus, it also protects those around you. 2/
6-Contacts of vaccinated cases were less likely get Covid than contacts of unvaccinated cases.
7-Most transmission occurred in households, showing that vaccination can protect household members—including kids not yet eligible for vaccination. 3/
medrxiv.org/content/10.110…
7-Most transmission occurred in households, showing that vaccination can protect household members—including kids not yet eligible for vaccination. 3/
medrxiv.org/content/10.110…
