title: The tubercle bacillus: Summaries of a symposium held in Lausanne, 22-25 April 1949.
abstract: A series of lectures on the tubercle bacillus by eminent authorities from various countries was organized at the Institut d'Hygiène et de Bactériologie of the University of Lausanne by Professor Paul Hauduroy, from 22 to 25 April 1949. Through the kindness of Professor Hauduroy it has been possible for the World Health Organization to publish in the Bulletin summaries of these lectures. (*).