122,811 research outputs found
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 2. University of Chicago Photographic Archive, [apf1-03144], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.https://chicagounbound.uchicago.edu/wilber_katz_images/1002/thumbnail.jp
Assessing stool quantities generated by three specific Kato-Katz thick smear templates employed in different settings.
No full textBACKGROUND
The Kato-Katz technique is recommended for the diagnosis of helminth infections in epidemiological surveys, drug efficacy studies and monitoring of control interventions. We assessed the comparability of the average amount of faeces generated by three Kato-Katz templates included in test kits from two different providers.
METHODS
Nine hundred Kato-Katz thick smear preparations were done; 300 per kit. Empty slides, slides plus Kato-Katz template filled with stool and slides plus stool after careful removal of the template were weighed to the nearest 0.1 mg. The average amount of stool that was generated on the slide was calculated for each template, stratified by standard categories of stool consistency (i.e. mushy, soft, sausage-shaped, hard and clumpy).
RESULTS
The average amount of stool generated on slides was 40.7 mg (95 % confidence interval (CI): 40.0-41.4 mg), 40.3 mg (95 % CI: 39.7-40.9 mg) and 42.8 mg (95 % CI: 42.2-43.3 mg) for the standard Vestergaard Frandsen template, and two different templates from the Chinese Center for Disease Control and Prevention (China CDC), respectively. Mushy stool resulted in considerably lower average weights when the Vestergaard Frandsen (37.0 mg; 95 % CI: 34.9-39.0 mg) or new China CDC templates (37.4 mg; 95 % CI: 35.9-38.9 mg) were used, compared to the old China CDC template (42.2 mg; 95 % CI: 40.7-43.7 mg) and compared to other stool consistency categories.
CONCLUSION
The average amount of stool generated by three specific Kato-Katz templates was similar (40.3-42.8 mg). Since the multiplication factor is somewhat arbitrary and small changes only have little effect on infection intensity categories, it is suggested that the standard multiplication factor of 24 should be kept for the calculation of eggs per gram of faeces for all investigated templates
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 2. University of Chicago Photographic Archive, [apf1-03144], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.https://chicagounbound.uchicago.edu/wilber_katz_images/1002/thumbnail.jp
Wilber G. Katz
No full textA tribute to Wilber G. Katz, who was a law professor and dean of the law school from 1939 to 1950. One of his colleagues and friends, Professor Kalven remembers Professor Katz’s attempts to learn baseball, the work that Professor Katz did in creating the University of Chicago Law Review, and Professor Katz’s gifts as a teacher (his ability to interweave the substance of the class with other things and his ability to plan a class)
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 1. University of Chicago Photographic Archive, [apf1-03143], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.
View information about rights and permissions.https://chicagounbound.uchicago.edu/wilber_katz_images/1001/thumbnail.jp
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 3. University of Chicago Photographic Archive, [apf1-03145], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.
View information about rights and permissions.https://chicagounbound.uchicago.edu/wilber_katz_images/1003/thumbnail.jp
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 1. University of Chicago Photographic Archive, [apf1-03143], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.
View information about rights and permissions.https://chicagounbound.uchicago.edu/wilber_katz_images/1001/thumbnail.jp
Wilber G. Katz, Formal
No full textWilber G. Katz, Formal 3. University of Chicago Photographic Archive, [apf1-03145], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.
View information about rights and permissions.https://chicagounbound.uchicago.edu/wilber_katz_images/1003/thumbnail.jp
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