The disease puzzled doctors. In the summer of 1967 more and more patients came to the university hospitals in Marburg and Frankfurt with strange symptoms. The doctors could not assign the courses to any known pathogen: initially headache, burning eyes, dry mouth, then high fever, and finally severe rashes. Within a week, the patients’ livers were largely destroyed, many began to bleed from all orifices and could no longer be saved.
The World Health Organization (WHO) flew in experts and sent samples all over the world. Doctors called on the US soldiers stationed in Germany to donate blood in order to obtain a serum against an alleged yellow fever outbreak. “We are completely in