Who is Karl Johnson?

Karl Johnson is a US based virologist who proved to be critical in the Bolivian Hemorrhagic Fever outbreak in San Joaquin. Having been enlisted to help by friend and colleague Ron MacKenzie, Johnson helped to create the protective suits that the researchers wore to help protect them in the field from the mass of airborne disease in the tropics. Additionally, Johnson and his coworkers helped to isolate the cause of the virus, stopping it from killing everyone in the area. Johnson, however, did contract the disease, and was only saved as a result of an army doctor who had treated another viral hemorrhagic fever in Korea who knew to drastically increase fluids.