 Covid-19: Urukingo Pfizer rwemerewe gukoreshwa byamaburakindi muri US Covid-19: Abo yishe muri US barenze kimwe cya kane cya miliyoni Joe Biden yakingiwe Covid-19 binyura kuri TV Umukuru wa leta ya Louisiana John Bel Edwards yategetse ko amabendera azoduzwa gushika hagati ku munsi Letlow azosezerwa. 