ABSTRACT
Cats are carriers of zoonotic agents to humans, including intestinal parasites. The purpose of this study was to analyze the accuracy of different laboratory methods for the diagnosis of intestinal parasites. Fecal samples were processed by the Willis, Sheather, Faust and Hoffman-Janer-Pons-Lutz (HJPL) methods. Accuracy analysis was performed determining the sensitivity, specificity, positive and negative predictive value and Kappa. A total of 149 fecal samples were collected, 65 from stray cats and 84 from domiciled cats. The prevalence of intestinal parasites in stray cats was 60% while in domiciled cats it was 17%. In the analysis of accuracy, the techniques that showed the greatest accuracy for Ancylostomids were Willis and Faust, for Cystoisospora spp. Sheather with Faust or HPJL, and Toxoplasma gondii/Hammondia hammondi the association between Willis and Faust. Therefore, for a reliable evaluation of the prevalence of intestinal parasites, at least two different techniques should be used in parasitological exams of feces.
Subject(s)
Cat Diseases/diagnosis , Cat Diseases/parasitology , Intestinal Diseases, Parasitic/veterinary , Animals , Animals, Domestic , Animals, Wild , Brazil , Cats , Clinical Laboratory Techniques , Feces/parasitology , Intestinal Diseases, Parasitic/diagnosisABSTRACT
Abstract Cats are carriers of zoonotic agents to humans, including intestinal parasites. The purpose of this study was to analyze the accuracy of different laboratory methods for the diagnosis of intestinal parasites. Fecal samples were processed by the Willis, Sheather, Faust and Hoffman-Janer-Pons-Lutz (HJPL) methods. Accuracy analysis was performed determining the sensitivity, specificity, positive and negative predictive value and Kappa. A total of 149 fecal samples were collected, 65 from stray cats and 84 from domiciled cats. The prevalence of intestinal parasites in stray cats was 60% while in domiciled cats it was 17%. In the analysis of accuracy, the techniques that showed the greatest accuracy for Ancylostomids were Willis and Faust, for Cystoisospora spp. Sheather with Faust or HPJL, and Toxoplasma gondii/Hammondia hammondi the association between Willis and Faust. Therefore, for a reliable evaluation of the prevalence of intestinal parasites, at least two different techniques should be used in parasitological exams of feces.
Resumo Gatos são veiculadores de agentes zoonóticos para o homem, entre eles os parasitos intestinais. O objetivo foi analisar a acurácia de diferentes métodos laboratoriais para o diagnóstico de parasitos entéricos. As amostras de fezes foram processadas pelos métodos de Willis, Sheather, Faust e Hoffman-Janer-Pons-Lutz (HJPL). A análise de acurácia foi realizada determinando a sensibilidade, especificidade, valor preditivo positivo e negativo e índice Kappa. Foram coletadas 65 amostras de fezes de gatos errantes e 84 amostras de gatos domiciliados, total de 149 amostras. A prevalência de parasitos entéricos nos errantes foi 60% e nos domiciliados 17%. Na análise de acurácia as técnicas que associadas apresentaram maior acurácia para Ancilostomídeos foram Willis e Faust, para Cystoisospora spp. Sheather com Faust ou HPJL, e para Toxoplasma gondii/Hammondia hammondi a associação entre Willis e Faust. Portanto, para uma avaliação fidedigna da prevalência de parasitos entéricos, deve-se usar no mínimo duas técnicas diferentes ao realizar os exames parasitológicos de fezes.
Subject(s)
Animals , Cats , Cat Diseases/diagnosis , Cat Diseases/parasitology , Intestinal Diseases, Parasitic/veterinary , Brazil , Clinical Laboratory Techniques , Feces/parasitology , Intestinal Diseases, Parasitic/diagnosis , Animals, Domestic , Animals, WildABSTRACT
Toxoplasmosis is caused by Toxoplasma gondii and the probability of this infection occurring in the first months of life is usually low because its transmission is related to eating habits. A 6-month-old nursing infant was diagnosed with acute toxoplasmosis, which was identified through anti- T. gondii IgA, IgM and low-avidity IgG serologic assays, polymerase chain reaction (PCR) and mouse bioassay test although its mother was seronegative. This serological divergence between mother and child led us to interview the mother regarding epidemiological factors. During this interview, she reported that she had given her 2-month-old baby a piece of undercooked beef to suck on. After some time, the baby presented fever and cervical lymphadenitis. This report emphasizes the importance of serological surveys of toxoplasmosis in nursing infants presenting with fever and lymphadenitis, in view of the possible acquisition of toxoplasmosis in the first months of life.
