Transmission of Covid-19 drops by at least 30% after a person is vaccinated, a new study suggests.
Public Health Scotland and the University of Glasgow assessed 300,000 NHS workers between December 8 – the first day of vaccination in Scotland – and March 3.
The researchers looked at the records of people who live with both vaccinated and unvaccinated healthcare workers, finding those who had a single dose were at least 30% less likely to pass the virus on.
Given that people living with healthcare workers could also catch the virus from other sources, researchers say the 30% figure is a low estimate.
Those who have had both doses of vaccine were found to be at least 54% less likely to pass on the virus.
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