Factbox: What doctors have learned about fighting COVID-19

FILE PHOTO: Phlebotomist Jenee Wilson talks with Melissa Cruz, an ER technician for Valley Medical Center who has recovered from the coronavirus disease (COVID-19) she contracted from a patient, as she finishes donating convalescent plasma at the Central Seattle Donor Center of Bloodworks Northwest during the outbreak in Seattle, Washington, U.S. April 17, 2020. The plasma from recovered patients will be used in an experimental treatment study for current coronavirus patients. REUTERS/Lindsey Wasson

(Reuters) - In the six months since an entirely new coronavirus began spreading around the world, doctors and hospitals have learned a lot about how to treat patients with COVID-19, the potentially deadly disease caused by the virus.

What doctors have learned about fighting COVID-19: