Κόσμος What are the Delta, Gamma, Beta and Alpha Co variants? By NewsBay - 19 Οκτωβρίου 2021 Share FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrintTumblrViber Ειδήσεις Ελλάδα UK officials are keeping a close watch on a new descendent of the Delta variant of Co. Ειδήσεις ΠΗΓΗ