https://gr.vogon.today/%ce%be%ce%b5%ce%ba%ce%af%ce%bd%ce%b7%cf%83%cf%84%ce%b5-%cf%80%ce%b5%cf%81%ce%b9%ce%bf%ce%b4%ce%b9%ce%ba%cf%8c/moderna-astrazeneca-pfizer-%cf%80%cf%8e%cf%82-%ce%b7-%ce%b5%ce%b5-%ce%ba%cf%81%cf%85%cf%86%ce%ac-%ce%ba%ce%b9%ce%bd%ce%b5%ce%af%cf%84%ce%b1%ce%b9-%cf%83%ce%b5-%ce%b1%ce%bd%cf%84%ce%b9-covid/2020/11/18/