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Diphtheria Studies, Toronto

Diphtheria Studies, Toronto swabs taken by the physician. Approximately 200 such cultures were obtained each week from children of schools scattered throughout the city. In this way the survey represents a cross-section of the school population during the time of the survey which was in this sense continuous. These swabs were rubbed upon one slope of Loeffler's medium, examined by a bacteriologist, TABLE 1 and "positive " or "suspicious" culDiphtheria Carrier Surveys in tures sent to the School of Hygiene School Children where the cultures were plated upon Toronto, 1934-1939 tellurite blood agar for identification. Number Number Positivo The utilization of dextrose, saccharose, A Cultures, and starch was determined, and intraExamined Morphology Virulence dermal virulence tests on rabbits were '1934May-June 1,453 16 0 carried out upon colony cultures when Nov.-Dec. 1,335 indicated on the basis of these tests193512 0 Jan.-June 1,821 i.e., utilization of dextrose, non-utiliza1935-36tion of saccharose. From October, 1936, 6 1 Nov.-April 1,862 to May, 1937, 2,472 cultures were plated *'9936 24 2 Oct.-Dec. 1,145 on tellurite blood agar without an initial 1937microscopic examination for the morJan.-May 1,327 19 2 1938phological appearance of the culture. S 0 Jan.-June 1,800 During the period of these carrier 848 5 0 Oct.-Dec. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Public Health American Public Health Association

Diphtheria Studies, Toronto

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Publisher
American Public Health Association
Copyright
Copyright © by the American Public Health Association
ISSN
0090-0036
eISSN
1541-0048
Publisher site
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Abstract

swabs taken by the physician. Approximately 200 such cultures were obtained each week from children of schools scattered throughout the city. In this way the survey represents a cross-section of the school population during the time of the survey which was in this sense continuous. These swabs were rubbed upon one slope of Loeffler's medium, examined by a bacteriologist, TABLE 1 and "positive " or "suspicious" culDiphtheria Carrier Surveys in tures sent to the School of Hygiene School Children where the cultures were plated upon Toronto, 1934-1939 tellurite blood agar for identification. Number Number Positivo The utilization of dextrose, saccharose, A Cultures, and starch was determined, and intraExamined Morphology Virulence dermal virulence tests on rabbits were '1934May-June 1,453 16 0 carried out upon colony cultures when Nov.-Dec. 1,335 indicated on the basis of these tests193512 0 Jan.-June 1,821 i.e., utilization of dextrose, non-utiliza1935-36tion of saccharose. From October, 1936, 6 1 Nov.-April 1,862 to May, 1937, 2,472 cultures were plated *'9936 24 2 Oct.-Dec. 1,145 on tellurite blood agar without an initial 1937microscopic examination for the morJan.-May 1,327 19 2 1938phological appearance of the culture. S 0 Jan.-June 1,800 During the period of these carrier 848 5 0 Oct.-Dec.

Journal

American Journal of Public Health – American Public Health Association

Published: Mar 1, 1940

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