Health
COVID-19 vaccines are probably less effective at preventing transmission than symptoms – here’s why – The Conversation UK
Injected vaccines tend to generate good immunity overall but less of a response in the nose and throat, where the virus enters and spreads from.
Countries where COVID-19 vaccines have rolled out quickly, such as Israel and the UK, are starting to give an indication of how well they work. Their early results suggest the vaccines are highly effective at preventing people from being hospitalised or dying from the disease.
Israeli data shows that the Pfizer/BioNTech vaccine has reduced severe disease by 92% and hospitalisations by 87%. And a Public Health England preprint a paper yet to be reviewed by other scientists suggests that one dose…
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