https://apnews.com/073c449a4eb30c98872a881307edddad

WASHINGTON (AP) — Hospitals are gearing up to test if a century-old treatment used to fight off flu and measles outbreaks in the days before vaccines, and tried more recently against SARS and Ebola, just might work for COVID-19, too: using blood donated from patients who’ve recovered.

Doctors in China attempted the first COVID-19 treatments using what the history books call “convalescent serum” -- today, known as donated plasma -- from survivors of the new virus.