Pfizer Corporation-BioNTech, Johnson & Johnson and Moderna are fervently producing COVID-19 vaccines for the U.S. population. Pfizer-BioNTech is primarily producing the vaccine at Pfizer's facility in Kalamazoo, Michigan. Moderna and Johnson & Johnson are contracting out much of their COVID-19 vaccine manufacturing to Catalent, using its facility in Bloomington, Indiana.

As of March 23, about one in four Americans had rece As of March 23, about one in four Americans had received at least their first COVID-19 vaccine dose.