Author | Sleigh, Adrian | |
Author | Hoff, Rodney | |
Author | Morr, Kenneth | |
Author | Barreto, Maurício Lima | |
Author | Paiva, Tereza Maisk de | |
Author | Pedrosa, José de Souza | |
Author | Sherlock, Ítalo Rodrigues de Araújo | |
Access date | 2016-03-30T17:11:37Z | |
Available date | 2016-03-30T17:11:37Z | |
Document date | 1982 | |
Citation | Comparison of filtration staining (Bell) and thick smear (Kato) for the detection and quantitation of Schistosoma mansoni eggs in faeces | pt_BR |
ISSN | 0035-9203 | |
URI | https://www.arca.fiocruz.br/handle/icict/13403 | |
Language | eng | pt_BR |
Publisher | Oxford University Press | pt_BR |
Rights | open access | pt_BR |
Subject in Portuguese | Schistosoma Mansoni | pt_BR |
Subject in Portuguese | Prevalência | pt_BR |
Subject in Portuguese | Infecção | pt_BR |
Subject in Portuguese | Humano | pt_BR |
Title | Comparison of filtration staining (Bell) and thick smear (Kato) for the detection and quantitation of Schistosoma mansoni eggs in faeces | pt_BR |
Type | Article | pt_BR |
Abstract | We compare results of one Bell and one Kato-Katz
examination performed on each of 315 stool specimens
from residents in an area in north-eastern Brazil
endemic for schistosomiasis mansoni. The prevalence
of schistosome infection detected by the Bell technique
was 76% and by the Kato-Katz technique was
63%. 81% (44/54) of the infections missed by a
Kato-Katz smear were light infections (one to 50 epg
range by Bell e xamination). Over-all, 55% (44/80) of
stools in this egg count range by the Bell technique
were negative xn a single-Kat&Katz smear. T-his
implies that five Kato-Katz smears per stool would
ensure a 95% probability (O-55’ x 100) of detecting
such light infections. However, a single Kato-Katz
smear detected eggs in 97% (124/128) of stools with a
Bell count >l&>pg. For ‘stools &sitive by both
methods the egg counts per gram of stool were higher
(p<O*001) by Kato-Katz examination. Geometric
mean egg counts for the infected population were
199 epg by the Kato-Katz and 92 epg by the Bell
methods. 64% (59 v. 36) more persons were classified
as heavily infected (>4OOepg) by the Kato-Katz
method than by the Bell method. The differing
measurements of schistosome infection obtained with
the Bell and Kato-Katz methods must be considered
when comparing data on morbidity-infection relationships. | pt_BR |
Affilliation | Harvard School of Public Health. Department of Tropical Public Health. Boston, USA | pt_BR |
Affilliation | Harvard School of Public Health. Department of Tropical Public Health. Boston, USA | pt_BR |
Affilliation | Harvard School of Public Health. Department of Tropical Public Health. Boston, USA | pt_BR |
Affilliation | Universidade Federal da Bahia. Departamento de Medicina Preventiva. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal da Bahia. Departamento de Medicina Preventiva. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil | pt_BR |