what “close calls” did Gene Johnson have with the disease

A civilian biohazard expert who runs the Ebola research program at USAMRIID in 1983. In 1987, Johnson identifies the Marburg virus in a blood serum sample taken from Peter Cardinal. He also proves that Marburg and Ebola have the ability to travel through the air. In 1988, he organizes an expedition to Kitum Cave with Dr. Peter Tukei but is unable to identify the origin of the virus. In 1989, Johnson works with Jerry Jaax on the Reston operation.