RESUMEN
Cryptosporidium spp. es un protozoario productor de diarrea. Los pacientes inmunocomprometidos pueden desarrollar formas clínicas graves y persistentes. Se describen las características de pacientes con enfermedad de base asociada a inmunosupresión (EAI) con infección por Cryptosporidium spp. (IC) atendidos en un hospital pediátrico referencial de Argentina entre los años 2018 y 2023. Se analizaron datos demográficos, EAI, características de la diarrea y coinfecciones. Se incluyeron 30 pacientes con EAI e IC. La mayoría registró trasplante de órgano sólido, neoplasia hematológica e inmunodeficiencia primaria. Dieciocho presentaron diarrea persistente al momento del diagnóstico. Seis pacientes registraron coinfecciones. Se debe considerar la criptosporidiosis en el diagnóstico diferencial de enfermedad diarreica aguda o persistente en niños con distintos tipos de EAI, como el trasplante de órgano sólido, neoplasias hematológicas e inmunodeficiencias primarias.
Cryptosporidium spp. is a diarrhea-causing protozoan. Immunocompromised patients may develop severe and persistent clinical forms. Here we describe the characteristics of patients with an underlying disease associated with immunosuppression (DAI) and Cryptosporidium spp. infection seen at a referral children's hospital in Argentina between 2018 and 2023. Demographic data, DAI, diarrhea characteristics, and co-infections were analyzed. A total of 30 patients with DAI and cryptosporidiosis were included. Most of them had undergone a solid organ transplant, had a hematologic neoplasm, or primary immunodeficiency. Persistent diarrhea was observed in 18 patients at the time of diagnosis. Co-infections were recorded in 6 patients. Cryptosporidiosis should be considered in the differential diagnosis of acute or persistent diarrhea in children with different types of DAI, such as solid organ transplant, hematologic neoplasms, and primary immunodeficiencies.
Asunto(s)
Humanos , Masculino , Femenino , Preescolar , Niño , Huésped Inmunocomprometido , Criptosporidiosis/diagnóstico , Criptosporidiosis/epidemiología , Hospitales Pediátricos/estadística & datos numéricos , Argentina/epidemiología , Estudios Retrospectivos , Diarrea/etiología , Diarrea/parasitología , Diarrea/epidemiología , Coinfección/epidemiologíaRESUMEN
INTRODUCTION: The multifactorial etiology of gastroenteritis emphasizes the need for different laboratory methods to identify or exclude infectious agents and evaluate the severity of diarrheal disease. OBJECTIVE: To diagnose the infectious etiology in diarrheic children and to evaluate some fecal markers associated with intestinal integrity. MATERIALS AND METHODS: The study group comprised 45 children with diarrheal disease, tested for enteropathogens and malabsorption markers, and 76 children whose feces were used for fat evaluation by the traditional and acid steatocrit tests. RESULTS: We observed acute diarrhea in 80% of the children and persistent diarrhea in 20%. Of the diarrheic individuals analyzed, 40% were positive for enteropathogens, with rotavirus (13.3%) and Giardia duodenalis (11.1%) the most frequently diagnosed. Among the infected patients, occult blood was more evident in those carrying pathogenic bacteria (40%) and enteroviruses (40%), while steatorrhea was observed in infections by the protozoa G. duodenalis (35.7%). Children with diarrhea excreted significantly more lipids in feces than non-diarrheic children, as determined by the traditional (p<0.0003) and acid steatocrit (p<0.0001) methods. Moreover, the acid steatocrit method detected 16.7% more fecal fat than the traditional method. CONCLUSIONS: Childhood diarrhea can lead to increasingly severe nutrient deficiencies. Steatorrhea is the hallmark of malabsorption, and a stool test, such as the acid steatocrit, can be routinely used as a laboratory tool for the semi-quantitative evaluation of fat malabsorption in diarrheic children.
Introducción. La etiología multifactorial de la gastroenteritis enfatiza la necesidad de usar diferentes métodos de laboratorio para identificar o excluir agentes infecciosos y evaluar la gravedad de la enfermedad diarreica. Objetivo. Diagnosticar la etiología infecciosa de la diarrea en niños y evaluar algunos marcadores fecales asociados con la integridad intestinal. Materiales y métodos. Se estudiaron 45 niños con enfermedad diarreica, en los cuales se evaluaron la presencia de enteropatógenos y los marcadores de malabsorción. Se analizaron las muestras fecales de 76 niños, mediante las pruebas de esteatocrito tradicional y esteatocrito ácido, para la cuantificación de la grasa. Resultados. Se observó diarrea aguda en el 80 % de los niños y diarrea persistente en el 20 %. De los individuos con diarrea, el 40 % fue positivo para enteropatógenos; los más diagnosticados fueron rotavirus (13,3 %) y Giardia duodenalis (11,1 %). Entre los pacientes infectados, la sangre oculta fue más evidente en aquellos portadores de bacterias patógenas (40 %) o enterovirus (40%), mientras que la esteatorrea se observó en infecciones por el protozoo G. duodenalis (35,7 %). Los niños con diarrea excretaron significativamente más lípidos en las heces que aquellos sin diarrea, según lo determinado por los métodos de esteatocrito tradicional (p<0,0003) y esteatocrito ácido (p<0,0001). Conclusiones. La diarrea infantil puede provocar deficiencias graves de nutrientes. La esteatorrea es distintiva de la malabsorción intestinal y puede detectarse mediante la estimación del esteatocrito ácido. Esta prueba podría utilizarse de forma rutinaria como una herramienta de laboratorio para la evaluación semicuantitativa de la malabsorción de grasas en niños con diarrea.
Asunto(s)
Diarrea , Heces , Síndromes de Malabsorción , Humanos , Diarrea/parasitología , Diarrea/etiología , Diarrea/microbiología , Heces/parasitología , Preescolar , Lactante , Síndromes de Malabsorción/complicaciones , Síndromes de Malabsorción/etiología , Masculino , Femenino , Niño , Giardiasis/complicaciones , Esteatorrea/etiología , Gastroenteritis/complicaciones , Gastroenteritis/parasitología , Gastroenteritis/microbiología , Sangre OcultaRESUMEN
Cryptosporidium spp. is a diarrhea-causing protozoan. Immunocompromised patients may develop severe and persistent clinical forms. Here we describe the characteristics of patients with an underlying disease associated with immunosuppression (DAI) and Cryptosporidium spp. infection seen at a referral children's hospital in Argentina between 2018 and 2023. Demographic data, DAI, diarrhea characteristics, and co-infections were analyzed. A total of 30 patients with DAI and cryptosporidiosis were included. Most of them had undergone a solid organ transplant, had a hematologic neoplasm, or primary immunodeficiency. Persistent diarrhea was observed in 18 patients at the time of diagnosis. Co-infections were recorded in 6 patients. Cryptosporidiosis should be considered in the differential diagnosis of acute or persistent diarrhea in children with different types of DAI, such as solid organ transplant, hematologic neoplasms, and primary immunodeficiencies.
Cryptosporidium spp. es un protozoario productor de diarrea. Los pacientes inmunocomprometidos pueden desarrollar formas clínicas graves y persistentes. Se describen las características de pacientes con enfermedad de base asociada a inmunosupresión (EAI) con infección por Cryptosporidium spp. (IC) atendidos en un hospital pediátrico referencial de Argentina entre los años 2018 y 2023. Se analizaron datos demográficos, EAI, características de la diarrea y coinfecciones. Se incluyeron 30 pacientes con EAI e IC. La mayoría registró trasplante de órgano sólido, neoplasia hematológica e inmunodeficiencia primaria. Dieciocho presentaron diarrea persistente al momento del diagnóstico. Seis pacientes registraron coinfecciones. Se debe considerar la criptosporidiosis en el diagnóstico diferencial de enfermedad diarreica aguda o persistente en niños con distintos tipos de EAI, como el trasplante de órgano sólido, neoplasias hematológicas e inmunodeficiencias primarias.
Asunto(s)
Criptosporidiosis , Hospitales Pediátricos , Huésped Inmunocomprometido , Humanos , Criptosporidiosis/epidemiología , Criptosporidiosis/diagnóstico , Argentina/epidemiología , Preescolar , Niño , Masculino , Femenino , Hospitales Pediátricos/estadística & datos numéricos , Lactante , Diarrea/epidemiología , Diarrea/parasitología , Diarrea/etiología , Adolescente , Estudios Retrospectivos , Coinfección/epidemiologíaRESUMEN
BACKGROUND: Prolonged diarrhoea is common amongst returning travellers and is often caused by intestinal protozoa. However, the epidemiology of travel-associated illness caused by protozoal pathogens is not well described. METHODS: We analysed records of returning international travellers with illness caused by Giardia duodenalis, Cryptosporidium spp., Cyclospora cayetanensis or Cystoisospora belli, reported to the GeoSentinel Network during January 2007-December 2019. We excluded records of travellers migrating, with an unascertainable exposure country, or from GeoSentinel sites that were not located in high-income countries. RESULTS: There were 2517 cases, 82.3% giardiasis (n = 2072), 11.4% cryptosporidiosis (n = 287), 6.0% cyclosporiasis (n = 150) and 0.3% cystoisosporiasis (n = 8). Overall, most travellers were tourists (64.4%) on long trips (median durations: 18-30 days). Cryptosporidiosis more frequently affected people < 18 years (13.9%) and cyclosporiasis affected people ≥ 40 years (59.4%). Giardiasis was most frequently acquired in South Central Asia (45.8%) and sub-Saharan Africa (22.6%), cryptosporidiosis in sub-Saharan Africa (24.7%) and South-Central Asia (19.5%), cyclosporiasis in South East Asia (31.3%) and Central America (27.3%), and cystoisosporiasis in sub-Saharan Africa (62.5%). Cyclosporiasis cases were reported from countries of uncertain endemicity (e.g. Cambodia) or in countries with no previous evidence of this parasite (e.g. French Guiana). The time from symptom onset to presentation at a GeoSentinel site was the longest amongst travellers with giardiasis (median: 30 days). Over 14% of travellers with cryptosporidiosis were hospitalized. CONCLUSIONS: This analysis provides new insights into the epidemiology and clinical significance of four intestinal protozoa that can cause morbidity in international travellers. These data might help optimize pretravel advice and post-travel management of patients with travel-associated prolonged gastrointestinal illnesses. This analysis reinforces the importance of international travel-related surveillance to identify sentinel cases and areas where protozoal infections might be undetected or underreported.
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Criptosporidiosis , Ciclosporiasis , Giardiasis , Viaje , Humanos , Adulto , Masculino , Femenino , Criptosporidiosis/epidemiología , Criptosporidiosis/diagnóstico , Persona de Mediana Edad , Adolescente , Viaje/estadística & datos numéricos , Giardiasis/epidemiología , Giardiasis/diagnóstico , Ciclosporiasis/epidemiología , Ciclosporiasis/diagnóstico , Adulto Joven , Cryptosporidium/aislamiento & purificación , Diarrea/epidemiología , Diarrea/parasitología , Cyclospora/aislamiento & purificación , Niño , Anciano , Preescolar , Giardia lamblia/aislamiento & purificación , Vigilancia de GuardiaAsunto(s)
Humanos , Masculino , Preescolar , Leucemia Linfoide/terapia , Combinación Trimetoprim y Sulfametoxazol/uso terapéutico , Huésped Inmunocomprometido , Coccidiosis/diagnóstico , Coccidiosis/tratamiento farmacológico , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Diarrea/parasitologíaRESUMEN
Cryptosporidium is a ubiquitous protozoan parasite that infects gut epithelial cells and causes self-limited diarrhea in immunocompetent individuals. However, in immunocompromised hosts with global defects in T cell function, this infection can result in chronic, life-threatening disease. In addition, there is a subset of individuals with primary immunodeficiencies associated with increased risk for life-threatening cryptosporidiosis. These patients highlight MHC class II expression, CD40-CD40L interactions, NF-κB signaling, and IL-21 as key host factors required for resistance to this enteric pathogen. Understanding which immune deficiencies do (or do not) lead to increased risk for severe Cryptosporidium may reveal mechanisms of parasite restriction and aid in the identification of novel strategies to manage this common pathogen in immunocompetent and deficient hosts.
Asunto(s)
Criptosporidiosis , Cryptosporidium , Síndromes de Inmunodeficiencia , Humanos , Diarrea/complicaciones , Diarrea/parasitología , Huésped InmunocomprometidoRESUMEN
Antecedentes: No conocemos datos sobre evaluación de pruebas inmunológicas para mejorar el diagnóstico de Giardia duodenalis y Cryptosporidium spp., agentes etiológicos de diarrea de importancia mundial, en Honduras. Objetivos: Comparar dos pruebas inmunológicas para el diagnóstico de Giardia y Cryptosporidium spp. con microscopía de rutina y determinar su aplicabilidad local. Métodos: Estudio descriptivo transversal. En 2013, 134 muestras de heces recibidas en el Servicio de Parasitología del Hospital Escuela (HE) y 67 muestras del Centro de Salud Alonso Suazo (CSAS) se analizaron con una Prueba Rápida Inmunocromatográfica (PDR). En 2019-2020, 60 muestras de heces del HE se analizaron con una prueba inmunoenzimática ELISA. El protocolo de rutina incluyó examen directo en solución salina y solución de Lugol, coloración tricrómica y coloración ácido resistente modificada (ARM) (HE) y examen directo en solución salina y solución de Lugol (CSAS). Resultados: Cada prueba inmunológica mostró mayor positividad que la microscopía: en 134 muestras del HE para Giardia (6.7% vs 4.5%) y Cryptosporidium (3.7% vs 0.7%), similar en 67 muestras del CSAS (14.9% vs 7.5% para Giardia; 0.7% para Cryptosporidium con la prueba inmunológica). De 60 muestras analizadas por ELISA en HE, 31.7% fue positiva por Giardia vs 18.3% en examen directo y 23.3% en coloración tricrómica; 6.7% positiva por Cryptosporidium spp. vs 3.3% por coloración ARM. Discusión: Pruebas inmunológicas aumentaron significativamente el diagnóstico de ambas parasitosis; sin embargo, publicaciones sobre pruebas similares ofrecieron resultados no concluyentes. Por costo elevado podrían reservarse para pacientes pediátricos, pacientes inmunocomprometidos en hospitales, complementando microscopía. Los laboratorios de salud deben fortalecer capacidad diagnóstica...(AU)
Asunto(s)
Humanos , Masculino , Femenino , Lactante , Preescolar , Niño , Pruebas Inmunológicas/métodos , Giardiasis/parasitología , Giardia lamblia/aislamiento & purificación , Criptosporidiosis/diagnóstico , Cryptosporidium/aislamiento & purificación , Ensayo de Inmunoadsorción Enzimática , Estudios Transversales , Giardiasis/epidemiología , Criptosporidiosis/epidemiología , Diarrea/parasitología , Honduras/epidemiologíaRESUMEN
The aetiology of diarrhoea in a patient in Cuba with HIV was investigated. Although molecular diagnostics are still not used in many under-resourced settings, here traditional methods were supported by use of PCR. This approach enabled detection of a dual infection (Cystoisospora belli and Enterocytozoon bieneusi), the latter of which was not identified by microscopy with Didier's trichromic staining.
Asunto(s)
Coccidiosis/diagnóstico , Diarrea/diagnóstico , Enterocytozoon/aislamiento & purificación , Microsporidiosis/diagnóstico , Sarcocystidae/aislamiento & purificación , Adulto , Antiinfecciosos/uso terapéutico , Coccidiosis/tratamiento farmacológico , Cuba , Diarrea/microbiología , Diarrea/parasitología , Enterocytozoon/genética , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Humanos , Huésped Inmunocomprometido , Masculino , Microsporidiosis/tratamiento farmacológico , Técnicas de Diagnóstico Molecular , Reacción en Cadena de la Polimerasa , Sarcocystidae/genética , Sarcoma de Kaposi/complicaciones , Sarcoma de Kaposi/tratamiento farmacológico , Combinación Trimetoprim y Sulfametoxazol/uso terapéuticoRESUMEN
As parasitoses intestinais constituem um importante problema de Saúde Pública, especialmente entre os pré-escolares, devido à imaturidade do sistema imune. Assim, este estudo objetivou realizar uma revisão integrativa dos estudos publicados entre os anos de 2010 a 2017 sobre parasitoses intestinais e os fatores associados ao desenvolvimento em crianças matriculadas em creches brasileiras. Foi realizada busca bibliográfica através das bases de dados Medline, Lilacs e SciELO, utilizando os descritores: infecção, parasitoses, diarreia e creches, e seus correspondentes em inglês: "infection", "parasitc diseases", "diarrhea" e "child day care centers". No caso das buscas no Medline o descritor Brazil também foi usado. Foram identificados 59 estudos, dos quais 11 foram incluídos no presente trabalho. Foi observado variação de 19,4% a 98,4% de parasitos e, a Giardia duodenalis foi o mais prevalente em crianças entre um e seis anos de idade, gênero masculino, com baixo peso, advindas de residências com alta densidade familiar e nível socioeconômico baixo. As análises mostraram a importância da compreensão dos fatores de risco para a incidência de parasitos, indicando a necessidade da promoção de estratégias efetivas para prevenção e controle das infecções parasitárias no país, visto que, tais infecções influenciam diretamente no desenvolvimento da criança, e em alguns casos, evoluindo a óbito.
Intestinal parasitosis is an important public health issue especially among pre-school children due to the immaturity of their immune system. Thus, this study aimed at carrying out an integrative review of studies published between 2010 and 2017 regarding intestinal parasites and associated factors in children registered in Brazilian day care centers. A bibliographic survey was performed through the Medline, Lilacs, and SciELO databases using the following descriptors: infection, parasitic diseases, diarrhea, and child day care centers, as well as their corresponding translations in Portuguese: "infecção", "parasitoses", "diarreia" and "creches". In the case of Medline searches, the descriptor Brazil was also used. Fifty-nine studies were identified, from which, 11 were included in this study. A variation of 19.4% to 98.4% of parasites could be observed, with Giardia duodenalis being the most prevalent in children between one and six years old, male, with low weight, coming from homes with high family density and low socioeconomic status. The analyzes showed the importance of understanding the risk factors for the incidence of parasites, showing the need to promote effective strategies for the prevention and control of parasitic infections in the country, since such infections have direct influence on the child's development, and in some cases, even evolving to death.
Asunto(s)
Enfermedades Parasitarias/parasitología , Niño , Guarderías Infantiles , Ascariasis/parasitología , Trichuris/parasitología , Salud Pública , Giardia lamblia/parasitología , Diarrea/parasitología , Infecciones/parasitologíaRESUMEN
Parasites of the genus Eimeria are involved in the neonatal diarrhea complex of alpaca (Vicugna pacos) crias, and infection by Eimeria is commonly known as coccidiosis. There are limited reports of these protozoa in clinically asymptomatic crias. In this study, fecal samples from 78 clinically asymptomatic alpaca crias were analyzed to evaluate the prevalence, parasitological load, and diversity of Eimeria species. This study was conducted in the Quenamari community located in the Peruvian Andes (Marangani, Cuzco) at 4500 m above sea level. All fecal samples were examined for parasites using the quantitative McMaster and modified Stoll techniques. Microscopic examination showed the presence of Eimeria oocysts in 68 out of the 78 samples (87.18%). Among the 78 samples we found E. lamae in 67 (85.90%), E. punoensis in 49 (62.82%), E. alpacae in 42 (53.85%), E. macusaniensis in 32 (41.03%), and E. ivitaensis in four (5.13%). Regarding parasitized crias, overall there was a mean parasitological load of 43,920 oocysts per gram of feces (OPG). Eimeria lamae had the highest parasitological load (mean 206,600 OPG). These findings could be due to environmental contamination with oocysts of different Eimeria species. Additional research is needed to determine if this burden of coccidiosis could produce subclinical impacts to the health of alpaca crias.
Asunto(s)
Camélidos del Nuevo Mundo , Coccidiosis/veterinaria , Diarrea/veterinaria , Animales , Coccidiosis/epidemiología , Coccidiosis/parasitología , Diarrea/epidemiología , Diarrea/parasitología , Eimeria , Heces/parasitología , Femenino , Masculino , Oocistos/aislamiento & purificación , Perú/epidemiología , PrevalenciaRESUMEN
Introduction: Entamoeba histolytica is an amebiasis-producing parasite. However, Entamoeba dispar, Entamoeba moshkovskii, and Entamoeba bangladeshi are nonpathogenic amoebae morphologically identical to it and, therefore, molecular techniques are required for their differentiation. Objective: To determine the frequency of Entamoeba species by polymerase chain reaction (PCR) in fecal samples from children under five years with diarrhea from Maracaibo (Venezuela). Materials and methods: A fecal sample per individual was collected from 75 children with diarrhea (case group) and 25 children without diarrhea (control group). Stools were evaluated by microscopic examination, formol-ether concentration method, and nested multiplex PCR in a single round for the identification of E. histolytica, E. dispar, and E. moshkovskii. In addition, a survey was conducted in which demographic data, signs, clinical manifestations, and socioeconomic status were registered. Results: In total, 48% of the children (38 from the case group and 10 from the control group) had intestinal parasites. Only four children presented cysts of the Entamoeba complex in their samples (three from the case group and one from the control group). By means of PCR, nine samples (9%) amplified for the studied amoebae. In the case group, three (28.13%) amplified for E. histolytica, four (30.50%) for E. dispar, and one (9.37%) for E. moshkovskii while only one (25%) sample amplified for E. dispar in the control group. Conclusion: In general, E. dispar predominated. Nevertheless, all those infected with E. histolytica were detected within the group of children with diarrhea and we reported the first case of E. moshkovskii in the region.
Introducción. Las amebas no patógenas Entamoeba dispar, Entamoeba moshkovskii y Entamoeba bangladeshi son morfológicamente idénticas a Entamoeba histolytica, parásito responsable de la amebiasis, por lo cual se necesitan técnicas moleculares para diferenciarlas. Objetivo. Determinar la frecuencia de las diferentes especies de Entamoeba mediante reacción en cadena de la polimerasa (Polymerase Chain Reaction, PCR) en muestras fecales de niños menores de cinco años con diarrea, provenientes de Maracaibo (Venezuela). Materiales y métodos. Se recolectó una muestra fecal por individuo en 75 niños con diarrea (grupo de casos) y en 25 niños sin diarrea (grupo control). Las heces se evaluaron mediante examen microscópico, método de concentración de formól-éter y PCR múltiple anidada en una sola ronda para identificar E. histolytica, E. dispar y E. moshkovskii. Además, se hizo una encuesta en la que se recopilaron los datos demográficos, signos, manifestaciones clínicas y estrato socioeconómico de los niños. Resultados. El 48 % de los participantes (38 del grupo de casos y 10 del grupo de control) tenían enteroparásitos. Solo en las muestras de cuatro de los niños, se encontraron quistes del complejo Entamoeba (tres en el grupo de casos y uno en el de control). Mediante PCR se amplificaron nueve muestras (9 %) para la detección de las amebas estudiadas. En el grupo de casos se registraron tres (28,13 %) de E. histolytica, cuatro (30,50 %) de E. dispar y una (9,37 %) de E. moshkovskii, en tanto que solo una (25 %) muestra amplificó para E. dispar en el grupo de control. Conclusión. En general, predominó E. dispar; sin embargo, todos los infectados con E. histolytica se detectaron en el grupo de niños con diarrea y se detectó el primer caso de E. moshkovskii en la región.
Asunto(s)
Diarrea , Entamoeba histolytica , Entamoeba , Entamebiasis , Niño , Preescolar , Diarrea/epidemiología , Diarrea/parasitología , Entamoeba/genética , Entamoeba histolytica/genética , Entamebiasis/epidemiología , Heces , Humanos , Venezuela/epidemiologíaRESUMEN
Cryptosporidiosis of neonatal dairy calves causes diarrhea, resulting in important economic losses. In Argentina, prevalence values of Cryptosporidium spp. and other enteropathogens such as group A rotavirus (RVA), bovine coronavirus (BCoV) and enterotoxigenic Escherichia coli (ETEC, endotoxin STa+), have been independently studied in different regions. However, an integrative epidemiological investigation on large-scale farms has not been carried out. In this study, fecal samples (n = 908) were randomly collected from diarrheic and healthy calves from 42 dairy farms, and analyzed for the presence of Cryptosporidium spp., RVA, BCoV, ETEC (STa+) and Salmonella spp. In all sampled dairy farms, dams had been vaccinated against rotavirus and gram-negative bacteria to protect calves against neonatal diarrhea. The proportion of calves shedding Cryptosporidium spp., RVA, and BCoV in animals younger than 20 days of age were 29.8%, 12.4% and 6.4%, and in calves aged between 21 and 90 days, 5.6%, 3.9%, and 1.8%, respectively. ETEC was absent in the younger, and occurred only sporadically in the older group (0.9%), whereas Salmonella spp. was absent in both. The observed sporadic finding or even absence of bacterial pathogens might be explained by the frequent use of parenteral antibiotics in 25.3% and 6.5% of the younger and the older group of calves, respectively, within 2 days prior to sampling and/or vaccination of dams against gram-negative bacteria. Diarrhea was observed in 28.8% (95% CI, 24.7-32.8%) of the younger calves and 11.7% (95% CI, 9.1-15.5%) of the older calves. Importantly, Cryptosporidium spp. (odds ratio (OR) = 5.7; 95% CI, 3.3-9.9; p < 0.0001) and RVA (OR = 2.5; 95% CI, 1.2-5.1; p < 0.05) were both found to be risk factors for diarrhea in calves younger than 20 days old. Based on its high prevalence and OR, our results strongly suggest that Cryptosporidium spp. is the principal causative factor for diarrhea in the group of neonatal calves, whereas RVA seems to play a secondary role in the etiology of diarrhea in the studied farms, with about three-times lower prevalence and a half as high OR. Furthermore, a coinfection rate of Cryptosporidium spp. and RVA of 3.7% was observed in the group of younger calves, which strengthens the assumption that these events are independent. In contrast, due to a low infection rate of enteropathogens in older calves, mixed infection (<< 1%) was virtually absent in this group.
Asunto(s)
Enfermedades de los Bovinos/epidemiología , Infecciones por Coronavirus/veterinaria , Criptosporidiosis/epidemiología , Cryptosporidium/patogenicidad , Industria Lechera , Diarrea/veterinaria , Infecciones por Rotavirus/veterinaria , Factores de Edad , Animales , Animales Recién Nacidos , Argentina/epidemiología , Bovinos , Enfermedades de los Bovinos/parasitología , Enfermedades de los Bovinos/virología , Infecciones por Coronavirus/epidemiología , Coronavirus Bovino/genética , Coronavirus Bovino/patogenicidad , Cryptosporidium/genética , Diarrea/epidemiología , Diarrea/parasitología , Diarrea/virología , Heces/parasitología , Heces/virología , Femenino , Rotavirus/genética , Rotavirus/patogenicidad , Infecciones por Rotavirus/epidemiologíaRESUMEN
This study shows a clinical case report of a kidney transplant patient who traveled from Mexico to The Netherlands and ate green vegetables in an international food restaurant. After 5 days, he started having diarrhea, nausea, colic, and a physical feeling of malaise. The patient only received symptomatic treatment after showing the characteristic symptoms of traveler's diarrhea. When he returned to Mexico, the clinical picture worsened, and he was hospitalized. Clinical analyses indicated dehydration and acute kidney injury stage II. Coproparasitoscopic study showed the presence of Cyclospora cayetanensis. Parenteral solutions, gastric mucosal protector, ciprofloxacin, and a soft diet were administrated as treatment. The patient was discharged 72 h later with an improvement of the kidney function.
Asunto(s)
Lesión Renal Aguda/diagnóstico , Cyclospora/aislamiento & purificación , Ciclosporiasis/complicaciones , Diarrea/complicaciones , Trasplante de Riñón , Lesión Renal Aguda/parasitología , Adulto , Viaje en Avión , Ciclosporiasis/parasitología , Ciclosporiasis/fisiopatología , Diarrea/parasitología , Diarrea/fisiopatología , Humanos , Masculino , México , Países Bajos , TurismoRESUMEN
Myiasis is a pathology caused by the infestation of fly larvae species which affects vertebrates' tissues or organs including humans. It can be classified entomologically or according to tissue tropism. Intestinal myiasis is rare and difficult to diagnose given its non-specific symptoms; the only way to confirm a case is by identifying the expelled larvae. This is the first case of intestinal myiasis reported in the department of Nariño (Colombia) in a 6-year-old child from a low-income family in the urban area of the municipality of Policarpa where there is no adequate treatment and no disposition of wastewater and basic sanitation conditions are insufficient. The clinical case was related to chronic diarrhea, abdominal pain, and anal pruritus with the subsequent expulsion of a larva identified by its morphological characteristics as Eristalis tenax fly larva.
La miasis se produce por la infestación con larvas de especies de moscas que afectan los tejidos u órganos de los vertebrados, incluido el ser humano. Puede clasificarse por caracterización entomológica o según el tropismo de las larvas en los tejidos. La miasis intestinal es poco frecuente y de difícil diagnóstico dada su sintomatología inespecífica, p or lo que la única forma de confirmar el caso es mediante la identificación de las larvas expulsadas.Se presenta el primer caso reportado en el departamento de Nariño (Colombia) de miasis intestinal en un niño de seis años residente en la zona urbana del municipio de Policarpa, proveniente de una familia de nivel socioeconómico bajo, sin acceso a un adecuado tratamiento y sin disposición de aguas residuales y con insuficientes condiciones de saneamiento básico. El caso clínico se asoció con diarrea crónica, dolor abdominal y prurito anal, con la posterior expulsión de una larva cuyas características morfológicas correspondían a las de la mosca Eristalis tenax.
Asunto(s)
Dípteros , Miasis/parasitología , Dolor Abdominal/parasitología , Animales , Niño , Diarrea/parasitología , Heces/parasitología , Humanos , Larva/anatomía & histología , Masculino , Áreas de Pobreza , Aguas ResidualesRESUMEN
The objective of this work was to conduct a retrospective study of causes of diarrhea in calves in southern Rio Grande do Sul between 1980 and 2014. All necropsy protocols and materials received in the Regional Diagnostic Laboratory of the Veterinary School of the Federal University of Pelotas were reviewed. Ninety-four cases of calves with diarrhea were diagnosed, of these, 44.7% were caused by parasitic infections and 34.0% by bacterial infections. Parasites as cause of diarrhea was the most important diagnostic in southern Rio Grande do Sul and affected calves from three to 12 months of age. The occurrence of diarrhea in animals even infants may be associated with environmental factors and the form of management that these animals are kept. Bacterial diseases are also important causes of diarrhea in calves up to three months of age in the region.
O objetivo deste trabalho foi descrever os dados de um estudo retrospectivo nos registros de 34 anos atividade de um laboratório de diagnóstico sobre as causas de diarreia em bezerros na região sul do Rio Grande do Sul. Foram revisados os protocolos de necropsia e materiais desta espécie encaminhados ao Laboratório Regional de Diagnóstico da Faculdade de Veterinária da Universidade Federal de Pelotas. Foram diagnosticados 94 casos de bezerros com diarreia, destes, 44,7% foram de causas parasitárias e 34,0% de causas bacterianas. Diarreia de causa parasitária foi a mais importante na região sul do Rio Grande do Sul e afetou bezerros de três a 12 meses de idade. A ocorrência de diarreia em animais mesmo lactentes pode estar associada a fatores ambientais e a forma de manejo no qual esses animais são mantidos. As enfermidades bacterianas foram, também, importantes causas de diarreia em bezerros de até três meses de idade na região.
Asunto(s)
Animales , Bovinos , Bovinos/parasitología , Colimetría , Diarrea/parasitología , Diarrea/veterinaria , Infecciones por Escherichia coli/parasitologíaRESUMEN
Cryptosporidium spp. are apicomplexan protozoa associated with chronic diarrhea in AIDS and other immunocompromised patients, and one of the commonest causes of childhood diarrhea and malnutrition, particularly in low-income settings. In Colombia, there are few molecular epidemiological studies on Cryptosporidium spp.; thereby, the transmission dynamics of this parasite in the country is poorly known. This study evaluated the diversity of Cryptosporidium at species, subtype family, and subtype level in children attending various day-care centers in Medellin, Colombia. Two hundred and ninety stool samples from children < 5 years of age were collected from April to November of 2015. All samples were processed by PCR and sequence analysis of the ssu RNA gene and the gp60 gene. An infection rate of 2.4% was observed, with only two Cryptosporidium species identified: C. hominis (6/7) and C. meleagridis (1/7). Cryptosporidium hominis isolates belonged to the subtypes IbA10G2, IaA13R6 and IaA13R7; IIIbA26G1R1 C. meleagridis subtype was also detected. There is a C. hominis predominance in the children evaluated, suggesting an important role of the anthroponotic transmission cycle in the day-care centers analyzed. Further investigation is required to determine infection sources and susceptible hosts in order to define appropriate management of cryptosporidiosis.
Asunto(s)
Cuidado del Niño/estadística & datos numéricos , Criptosporidiosis/epidemiología , Criptosporidiosis/transmisión , Cryptosporidium/aislamiento & purificación , Adolescente , Animales , Niño , Preescolar , Colombia/epidemiología , Criptosporidiosis/parasitología , Cryptosporidium/clasificación , ADN Protozoario/genética , Diarrea/parasitología , Heces/parasitología , Femenino , Genotipo , Humanos , Higiene , Masculino , Reacción en Cadena de la Polimerasa , Pobreza , Sulfotransferasas/genéticaRESUMEN
The present study attempted to verify the prevalence of and risk factors for diarrhea-causing agents in dairy calves from Brazil. Additionally, ages with a higher risk of occurrence for each agent were verified by means of the receiver operating characteristic (ROC) curve. The collections were performed on 39 farms, belonging to 29 municipalities located in eight states of Brazil. It was possible to conclude that the prevalence of Coronavirus, Rotavirus, Cryptosporidium spp., Eimeria spp., and nematodes was 7.20% (95% CI 4.54-9.78), 6.37% (95% CI 3.85-8.89), 51.52% (95% CI 45.26-55.57), 3.46% (95% CI 2.24-4.67), and 3.46% (95% CI 2.24-4.67), respectively. Ages with higher probabilities of occurrence of these diseases in calves were < 10, > 8, > 6, > 37, and > 36 days, respectively. Diarrhea occurred more significantly (P < 0.0001) in animals less than 21 days old and mainly on those receiving milk through automatic feeders (P < 0.001). Cryptosporidium spp. were a risk factor for the occurrence of Rotavirus, and vice versa (P = 0.0039) and presented a positive correlation with Coronavirus (P = 0.0089). Calves that drink water from rivers, streams, and ponds had a higher chance of being infected by Eimeria spp. (P < 0.0001), as well as developing infection by nematodes (P < 0.0001). The results found in this study highlight the importance of studying the agents of diarrhea together, once they act as coinfection where the losses triggered for the owners will involve some of these agents simultaneously.
Asunto(s)
Enfermedades de los Bovinos/epidemiología , Infecciones por Coronavirus/veterinaria , Criptosporidiosis/complicaciones , Diarrea/veterinaria , Infecciones por Nematodos/veterinaria , Infecciones por Rotavirus/veterinaria , Animales , Brasil/epidemiología , Bovinos , Enfermedades de los Bovinos/parasitología , Enfermedades de los Bovinos/virología , Coronavirus/aislamiento & purificación , Criptosporidiosis/epidemiología , Cryptosporidium/aislamiento & purificación , Diarrea/parasitología , Diarrea/virología , Eimeria/aislamiento & purificación , Granjas , Heces/parasitología , Heces/virología , Femenino , Infecciones por Nematodos/complicaciones , Prevalencia , Curva ROC , Factores de Riesgo , Rotavirus/aislamiento & purificaciónRESUMEN
Entamoeba histolytica is a rare but feared pathogen owing to its related morbidity and mortality. Physicians in an ambulatory clinic in Cusco noted frequent reports of E. histolytica diagnosed by microscopy. Other non-pathogenic species of Entamoeba have an identical microscopic appearance. To determine whether the organisms were actually E. histolytica, faecal specimens from children aged six months to three years with diarrhoea were tested by a species-specific ELISA for E. histolytica antigen. Although 19/73 patients (26.0%) were presumptively diagnosed with amoebiasis based on microscopy, none were confirmed by ELISA. Most cases diagnosed as E. histolytic by microscopy in Peru are not infected by the pathogenic species and are probably colonised by non-pathogenic amoeba such as Entamoeba dispar.
Asunto(s)
Diarrea/diagnóstico , Entamoeba histolytica/aislamiento & purificación , Entamebiasis/diagnóstico , Instituciones de Atención Ambulatoria , Animales , Preescolar , Errores Diagnósticos , Diarrea/parasitología , Entamoeba/citología , Entamoeba/inmunología , Entamoeba/aislamiento & purificación , Entamoeba histolytica/citología , Entamoeba histolytica/inmunología , Entamebiasis/parasitología , Ensayo de Inmunoadsorción Enzimática , Heces/parasitología , Humanos , Lactante , Microscopía , Perú/epidemiologíaRESUMEN
Cryptosporidiosis has been reported as an important cause of neonatal diarrhea and mortality in cattle, sheep, and other ruminants, but its impact on alpaca health has not been studied thoroughly. In this study, we have determined the prevalence and evaluated the role of cryptosporidiosis as a risk factor for diarrhea occurrence in newborn alpacas. During the calving season (January-March) of 2006, stool specimens (N = 1312) were collected from 24 herds of newborn alpacas in Puno and Cuzco, departments that account for the largest populations of alpacas in Peru. All the specimens were microscopically screened for Cryptosporidium spp. using the acid-fast technique. The association between Cryptosporidium detection and diarrhea was analyzed using χ2 test and generalized lineal model. Cryptosporidium species were determined by PCR-RFLP analysis of the small subunit rRNA gene. Cryptosporidium oocysts were detected in 159 of 1312 (12.4%) newborn alpacas. Results of the analyses demonstrated that crypstosporidiosis was significantly associated with diarrhea (PR = 3.84; CI95% 2.54-5.81; p < 0.0001). Only Cryptosporidium parvum was detected in the 153 Cryptosporidium-infected animals. Thus, there is an association of C. parvum infection with diarrhea in neonatal alpacas.
Asunto(s)
Camélidos del Nuevo Mundo/parasitología , Criptosporidiosis/epidemiología , Criptosporidiosis/parasitología , Cryptosporidium parvum/aislamiento & purificación , Diarrea/veterinaria , Animales , Animales Recién Nacidos , Cryptosporidium parvum/clasificación , Cryptosporidium parvum/citología , Cryptosporidium parvum/genética , Diarrea/epidemiología , Diarrea/parasitología , Heces/parasitología , Oocistos/citología , Perú/epidemiología , Prevalencia , Subunidades Ribosómicas Pequeñas/genética , Factores de RiesgoRESUMEN
The objective of this work was to conduct a retrospective study of causes of diarrhea in calves in southern Rio Grande do Sul between 1980 and 2014. All necropsy protocols and materials received in the Regional Diagnostic Laboratory of the Veterinary School of the Federal University of Pelotas were reviewed. Ninety-four cases of calves with diarrhea were diagnosed, of these, 44.7% were caused by parasitic infections and 34.0% by bacterial infections. Parasites as cause of diarrhea was the most important diagnostic in southern Rio Grande do Sul and affected calves from three to 12 months of age. The occurrence of diarrhea in animals even infants may be associated with environmental factors and the form of management that these animals are kept. Bacterial diseases are also important causes of diarrhea in calves up to three months of age in the region.(AU)
O objetivo deste trabalho foi descrever os dados de um estudo retrospectivo nos registros de 34 anos atividade de um laboratório de diagnóstico sobre as causas de diarreia em bezerros na região sul do Rio Grande do Sul. Foram revisados os protocolos de necropsia e materiais desta espécie encaminhados ao Laboratório Regional de Diagnóstico da Faculdade de Veterinária da Universidade Federal de Pelotas. Foram diagnosticados 94 casos de bezerros com diarreia, destes, 44,7% foram de causas parasitárias e 34,0% de causas bacterianas. Diarreia de causa parasitária foi a mais importante na região sul do Rio Grande do Sul e afetou bezerros de três a 12 meses de idade. A ocorrência de diarreia em animais mesmo lactentes pode estar associada a fatores ambientais e a forma de manejo no qual esses animais são mantidos. As enfermidades bacterianas foram, também, importantes causas de diarreia em bezerros de até três meses de idade na região.(AU)