A total of 4 billion doses of COVID-19 vaccines have been used worldwide
Елена Матвеева2021-11-19T14:09:43+03:00More than 4 billion doses of coronavirus vaccines have been used cumulatively worldwide since immunization programs began, MedicalXpress reports. The rate of vaccination has slowed a bit recently: the last, fourth billion doses were used in 30 days, whereas previously it took 26 days to administer the same number of doses. It took the longest [...]