by Issam Ahmed with AFP bureaus WASHINGTON, United States (AFP) — The Pfizer-BioNTech Covid-19 vaccine was to begin leaving the company’s Michigan factory on Sunday, ready to be injected into the arms of millions of the most vulnerable Americans as the global death toll topped 1.6 million. Doses will be shipped out in boxes containing dry ice that are capable of staying at -70 degrees Celsius (-94 degrees Fahrenheit), the frigid temperature needed to preserve […]