Single-Dose Johnson & Johnson COVID-19 Vaccine Would Be A ‘Game Changer,’ Maryland Officials Say

As states desperately await for more doses of the limited coronavirus vaccines created by Pfizer and Moderna, Maryland Gov. Larry Hogan is hoping that another company will begin producing their version of their COVID-19 vaccine soon. State officials said one of the companies getting closer to production is Johnson & Johnson, who have a contract with Maryland-based Emergent BioSolutions for a covid-19 vaccine.