His fiancee, Louise Troh, has signed a deal with Weinstein Books to tell the couple's story.
"The love of my life and the father of my son came to America to marry me," she said in a release. "It was supposed to be the first happy day of a new life of joy for us all. But before we could make our new family, he died a terrible death in a quarantined room. I am writing this book to tell people about Eric, about our love story, about our family and about my faith that has been tested but not broken."
Duncan's family recently reached a settlement with Texas Health Presbyterian Hospital, but Troh was not part of that settlement. She and Duncan have a 19-year-old son who had not seen his father since he left Liberia as a child.