London. A single dose of the Pfizer or AstraZeneca vaccine reduces the chances of transmitting a person with coronavirus to other family members by nearly 50 percent, according to a study by the British Public Health Agency (PHE).
Public Health England said in a statement that people infected with the virus three weeks after receiving a dose of the vaccine are 38-49 percent less likely to transmit the virus to their family members than those who have not been vaccinated.
This level of protection, which is observed on the fourteenth day after vaccination, is similar regardless of the age of the person who was vaccinated or the people who live in the house.
British Health Minister Matt Hancock said: “This is great news. We have already learned that vaccines have saved lives and this study, which is the most comprehensive conducted under real conditions, also shows that it reduces the transmission of this deadly virus.”
This study followed 57,000 people from 24,000 families where the vaccinated person tested positive and compared them to nearly one million unvaccinated people.
PHE stressed that homes are considered “high risk” places in terms of transmission, and “similar results can be seen in areas with similar transmission risks, such as shared residences and prisons.”
He also indicated that a dose of the vaccine would allow, after four weeks, to reduce the risk of developing symptoms by between 60 and 65 percent.
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