First proven case in the U.S. in which the virus was transmitted via an organ transplant prompts calls for more thorough testing of donors.

Doctors say a woman in Michigan contracted Covid-19 and died last fall two months after receiving a tainted double-lung transplant from a donor who turned out to harbor the virus that causes the disease — despite showing no signs of illness and initially testing negative.

https://www.nbcnews.com/health/health-news/organ-transplant-patient-dies-after-receiving-covid-infected-lungs-n1258388