1982
DOI: 10.1017/s0031182000051763
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Daily egg production of Ascaris lumbricoides: the distribution of eggs in the faeces and the variability of egg counts

Abstract: SUMMARYFifteen children aged from 6 to 12 years who were infected with Ascaris lumbricoides were selected for the study. The number of eggs/g (e.p.g.) of stool was determined using Beaver's direct smear technique, Stoll's dilution egg count technique and Katz's modified thick smear technique. Beaver's direct smear method consistently gave a higher e.p.g. than the other two methods. Results of this study show that Katz's modified thick smear technique was the best of the three methods used. The e.p.g. depends o… Show more

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Cited by 96 publications
(65 citation statements)
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“…One species infects ;1 billion people worldwide and is considered an important ''neglected disease'' (Bethony et al 2006;Hotez 2008). It is estimated that an Ascaris female has as many as 25,000,000 eggs at one time and lays 200,000 to 2 million fertilized eggs per day (Cram 1925;Brown and Cort 1927;Olsen et al 1958;Sinniah 1982). Theodor Boveri studied Ascaris at the turn of the 19th Century and first described chromosomes and cytoplasm in heredity, determinate cleavage, and a nematode cell lineage (Satzinger 2008).…”
mentioning
confidence: 99%
“…One species infects ;1 billion people worldwide and is considered an important ''neglected disease'' (Bethony et al 2006;Hotez 2008). It is estimated that an Ascaris female has as many as 25,000,000 eggs at one time and lays 200,000 to 2 million fertilized eggs per day (Cram 1925;Brown and Cort 1927;Olsen et al 1958;Sinniah 1982). Theodor Boveri studied Ascaris at the turn of the 19th Century and first described chromosomes and cytoplasm in heredity, determinate cleavage, and a nematode cell lineage (Satzinger 2008).…”
mentioning
confidence: 99%
“…Medidas de fecundidade dos helmintos intestinais em geral são baseados em estimativas do número de ovos presentes em uma amostra de fezes do hospedeiro e são notórios em sua inconsistência e variabilidade, ou seja, as diferenças existentes entre os exames do mesmo animal devem ser consideradas as variações em função de fatores dependentes do próprio parasito (Moriya, 1954;Hall, 1982;Sinniah 1982;Anderson & Schad; 1'985).…”
Section: Introductionunclassified
“…Nesse contexto, o diagnóstico laboratorial deve ser feito com muito cuidado para que os resultados expressem a realidade, o valor do diagnóstico está diretamente relacionado ao seu processamento, experiência e a seriedade do profissional responsável. Grisi & Todd (1978) citaram que uma atenção considerável tem sido dada ao parásitismo subclínico em bovinos e ao baixo número de ovos nas fezes.Medidas de fecundidade dos helmintos intestinais em geral são baseados em estimativas do número de ovos presentes em uma amostra de fezes do hospedeiro e são notórios em sua inconsistência e variabilidade, ou seja, as diferenças existentes entre os exames do mesmo animal devem ser consideradas as variações em função de fatores dependentes do próprio parasito (Moriya, 1954;Hall, 1982;Sinniah 1982;Anderson & Schad; 1'985).São várias as técnicas utilizadas para fins de diagnóstico das helrnintoses gastrintestinais dos bovinos. Neste experimento foram utilizadas três técnicas já descritas: a técnica de McMaster utilizada para contagem de ovos por grama de fezes (opg); duas técnicas de centrífugo flutuação: Wisconsin, que é utilizada para detectar a presença de ovos quando o opg é considerado baixo, e a técnica de Figueiredo et ai.…”
unclassified
“…Again, eggs were not found in the washings. (Brown & Cort, 1927;Sinniah, 1982). The output of T_^ canis, slightly larger than T\_ pteropodis (Section 6.2.6), is not known.…”
Section: Embryonation and Infectivity Of Eggsmentioning
confidence: 99%
“…Despite few studies in other nematode species, Foor (1983) generalized that the egg output is directly correlated to size of the adult female. Dubey (1967) (Brown & Cort, 1927;Sinniah, 1982). The output of T_^ canis, slightly larger than T\_ pteropodis (Section 6.2.6), is not known.…”
Section: Embryonation and Infectivity Of Eggsmentioning
confidence: 99%