Laboratory Division: ABSTRACTS OF PAPERS PRESENTED AT THE FORTY-FIFTH ANNUAL MEETING OF THE LABORATORY DIVISION OF THE CANADIAN PUBLIC HEALTH ASSOCIATION AND THE FIFTH MEETING OF THE TROPICAL MEDICINE AND INTERNATIONAL HEALTH DIVISION, A JOINT MEETING ON INFECTIOUS DISEASES, IN ASSOCIATION WITH THE EPIDEMIOLOGY DIVISION, C.P.H.A., THE CANADIAN ASSOCIATION OF MEDICAL MICROBIOLOGISTS AND THE CANADIAN SOCIETY OF MICROBIOLOGISTS, CHATEAU LAURIER HOTEL, OTTAWA, NOVEMBER 23-25, 1977