Researchers hope this old-fashioned treatment will work for coronavirus

Phlebotomist Jenee Wilson carries COVID-19 convalescent plasma from a donor at Bloodworks Northwest on April 17, 2020 in Seattle, Washington. (Photo by Karen Ducey/Getty Images)

(CNN)Plasma Technologies LLC has signed a defense contract worth $750,000 to develop scaled-up Covid-19 convalescent plasma technologies, according to an announcement on the Department of Defense website Monday.

It's the latest development in the effort to use a 19th century treatment to help 21st century patients.
The contract with the DoD's Joint Acquisition Task Force is to develop a new convalescent blood plasma process that makes more serum-derived products, and faster.
    President Donald Trump and US health leaders have done a full court press to encourage people who survived Covid-19 to donate plasma to help those who are sick.
    Two weeks ago, on a tour of the Red Cross, Trump implored people to volunteer to donate plasma "as soon as you can."
    "We have a lot of people that would heal, would get better. As soon as you can, please," Trump said.
    While nearly 67,000 people have be