by Issam AHMED Agence France Presse WASHINGTON, United States (AFP) — The United States on Friday authorized Moderna’s Covid-19 vaccine for emergency use, paving the way for six million doses of a second vaccine to soon begin shipping across the hardest-hit country in the world. Food and Drug Administration (FDA) chief Stephen Hahn said: “With the availability of two vaccines now for the prevention of Covid-19, the FDA has taken another crucial step in […]