Margaretha Hedwig Zuelzer was baptized as a Christian in 1916. Starting in 1916 she worked for Germany’s Imperial Health Office, later known as the Reichsgesundheitsamt. In 1918 she received the merit cross for war aid (Kriegshilfe) for her bacteriological research. In 1920, she became department head at the Berliner Protozoenlaboratorium. In 1933, she was suspended from this position because of h…