A study by the health organization of the British Ministry of Health revealed that a single dose of the vaccines Pfizer / Biontech and AstraZeneca reduces the chances of transmission of the coronavirus by 40-50 percent.
A dose of the covid-19 vaccine reduces the transmission of the virus to 50% | Video | CNN
2021-05-01T14:52:15.999Z
A study by the health organization of the British Ministry of Health revealed that a single dose of the vaccines Pfizer / Biontech and AstraZeneca reduces | Health | CNN