May 5, 2020 / By Kayla Rivas | Fox News The first doses of a coronavirus vaccine have been injected into human patients, Pfizer Inc. and BioNTech announced on Tuesday. The first dosing of the BNT162 vaccine program began in Germany last week, according to a company statement. The trial phase aims to enroll up to 360 patients, ages 18 to 55. Once the …