Drone companies are preparing to deliver coronavirus vaccines in rural U.S.

The company’s temperature-controlled boxes can hold about 600 to 1,500 vials of vaccines, depending on the provider. And they were constructed to maintain the super-low temperatures required by Pfizer for 48 hours, and Moderna for at least 72 hours, Williams said. Johnson & Johnson’s one-dose vaccine can be kept at slightly higher temperatures, between 36 and 46 degrees Fahrenheit, which the containers can maintain for about 96 hours, Williams added.