An English study ensures that a dose of Pfizer or Astrazeneca against covid reduces the transmission of the virus by almost half

People who became infected three weeks after receiving the first dose were 38% to 49% less likely to infect others around them who had not been vaccinated, indicates research by Public Health England (PHE), an advisory and support organization for the Ministry of Health.

The analysis also observed protection against covid-19 fourteen days after vaccination, in all ages.

"Vaccines are vital to returning to a normal life. Vaccines not only reduce the severity of the disease and prevent hundreds of deaths every day, we now see that they also have the impact of reducing the possibility of passing covid-19 to others" said Mary Ramsay, head of PHE's immunization area.

Ramsay added that, although these These are "encouraging" data, It is important that people act as if they have the virus and maintain hygiene and social distance.

PHE highlighted that homes are places of high risk of transmission, so this study provides evidence on the impact of vaccines in reducing transmission.

On United Kingdom, whose immunization plan is carried out with preparations from Pfizer, AstraZeneca and Moderna, 33,8 million people have received the first of the two doses.