Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Experimental Coronavirus Vaccine Ready for Human Trials in US VOA News Two pharmaceutical companies said Tuesday their experimental coronavirus vaccineisbeing deliveredin the U.S. for initial human testing. U.S.drugmakerPfizer Inc and Germany'sBioNTechSE said if the trials prove the vaccine is safe and effective, it could be ready for broad distribution in the U.S. by year's end. The vaccine could be among the first vaccines approved for use in the U.Sfor the virus, which has infected over 1 million people and killed about 69,000others, according to John's Hopkins University statistics. The U.S. leads the world in infections and fatalities. .