First International Leprosy Congress in Berlin. President: Rudolf Virchow; Vice-Presidents: Hansen and Lassar. This conference recognised skin and nasal discharge of bacilli, the contagiousness of leprosy, and it also recommended control of leprosy by segregation of patients with the disease. Source: International Journal of Leprosy: Centennial Festskrift, 1 1873-1973 .[Conference/Congress, People][Europe]