![PHE: Pfizer, Oxford-AstraZeneca vaccines of Covid-19 effective among old people](https://www.csregypt.com/wp-content/uploads/2021/03/1614636661794111489184948189367.jpg)
PHE: Pfizer, Oxford-AstraZeneca vaccines of Covid-19 effective among old people
The Public Health England (PHE) has submitted a pre-print of a real-world study that shows ...
The Public Health England (PHE) has submitted a pre-print of a real-world study that shows ...