Sample records for TRIQUINOSIS (trichinosis)

Sample records 1 - 9 shown.


Triquinosis: Entre el temor y el deber de informar la fuente de infección/ Triquinosis: between the fear and the necessity of informing the source of infection


Resumen en español Se presenta un brote de triquinosis en un grupo familiar adquirido por la ingestión de "anticuchos". Aunque dos pacientes debieron ser hospitalizados por la gravedad del cuadro de triquinosis y otros miembros de la familia también presentaron sintomatología, no fue posible obtener información sobre la fuente infectante. El temor a recibir alguna sanción, sumado a la falta de conciencia de la importancia de entregar información sobre el origen de la carne infectada, (mas) genera estas situaciones. Se presenta el brote con el objetivo de fomentar la educación sobre triquinosis en la población Resumen en inglés We present an epidemic of Trichinosis in a family group, acquired by the ingestion of brochettes. Although two patients had to be hospitalized because of the severity of symptoms of Trichinosis, other family members also presented symptoms but it was not feasible to obtain information about the source of the infection. The fear of punishment in addition to the lack of conscience of the importance of providing information of the origin of the infected meat, lead to these situations. We present this epidemic with the idea of encouraging the education on Trichinosis in the population

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Brotes epizoóticos de triquinosis en dos criadores de cerdos de la Región Metropolitana, Chile./ Epizootic outbreaks of trichinosis in two pig farms from the Metropolitan Region, Chile.

Schenone, Hugo; Burgos, Marisol; Ulloa, Marcelo; Acuña, Pedro; Ojeda, Julio; Silva, José Rolando; Ibáñez, Oscar; Schenone, Hugo

Resumen en inglés In Chile swine trichinosis has presented a progressive decreasing in the last two decades of XX century. T. Spiralis pig infection descended from an average of 0.683 per 1000 in 1980-1984 to 0.315 in 1985-1989 andto 0.115 in 1990-1996. In the particular case of Metropolitan Region this decreasing has been more marked: from an average of 0.058 per 1000 in 1990-1994to 0.003 in 1995-1999. Between the end of June 1999 and middle January 2000 in MetropolitanRegion abattoirs T. (mas) spiralis was detected in 15 (4.9%) out of 306 swine from two pigsties located in El Monte (E.M.) and Padre Hurtado (P.H.) 45 and 30 km south-west from Santiago. In the same period another four pigs from the same premises were found infected in abattoirs of other regions. During inspection visits it was stated that both pig farms had deficient sanitary conditions. Phototrichinoscopy was positive in three out of five Rattus norvegicus collected in E.M. In pigsty PH the examination of diaphragm samples of 25 dogs and 17 cats resulted negative. In the premises originating T. spirali infected swine the Metropolitan Environmetal Health Service Abattoirs Progam carries out an epidemiological vigilance consisting in the follow-up of animls destined for slaughteringin order to initiate prophylactic actions oriented to eliminate eventual sources of trichinosis infection for human and rearing pigs

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Inmunodiagnóstico de la triquinosis humana/ Inmunodiagnosis of human trichinosis

Contreras, María del C; Sandoval, Lea; Salinas, Patricia; Saavedra, Tirza; Schenone, Hugo

Resumen en inglés An indirect hemagglutination test (IHAT) and an ELISA test for trichinosis using as antigen a larvae soluble fraction from Trichinella spiralis was carried out for the detection of IgG, IgM and IgA specific antibodies in 113 serum samples from patients confirmed or suspected to have trichinosis by strong clinical and epidemiological evidences (Group I). The same tests were also performed on 110 serum samples corresponding to patients without strong evidences of having tri (mas) chinosis (Group II). In Group I the corresponding sensitivities for RHAI, ELISA IgG, ELISA IgM, ELISA IgA were: 82.3-85.8-88.5 and 88.5% respectively. Seventeen patients were tested again a week after the first analysis (10 of them corresponded to negative ones), increasing the positivity: 23.5-100.0;35.3-100.0;41.2-100.0 and 41.2-100.0% for RHAI, ELISA IgG, ELISA IgM and ELISA IgA, respectively. Other two patients were followed-up for 5 years. IHAT and ELISA IgG remained positive, whereas ELISA IgM and ELISA IgA were constantly negative betweeen 17 and 32 months in one case, and between 48 and 60 months in the other (this last one had presented a severe clinic disease). In the group II, four patients were positive with IHAT, however only one for ELISA IgA, the latter also presented ELISA IgM near the cut off. The use of ELISA IgG, ELSIA IgM and ELISA IgA in the immunodiagnosis of trichinosis is discussed

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Situación epidemiológica actual de la triquinosis en Chile. 1991-2000/ Epidemiology of trichinosis in Chile from 1991 to 2000

Schenone F, Hugo; Olea N, Andrea; Schenone C, Hugo; Contreras L, María del Carmen; Mercado P, Rubén; Sandoval S, Lea; Pavletic B, Carlos

Resumen en inglés Background: Human and animal trichinosis has been recorded in Chile since the late XIX century and is irregularly distributed along the country. From high rates of infection in the early 1900, the frequency of this parasitosis in man has progressively decreased. Aim: To describe and discuss the epidemiological situation of trichinosis in Chile during the decade 1991 - 2000. Material and methods: Human infection was assessed using annual incidence and lethality reports pro (mas) vided by the Ministry of Health, periodic photostrichinoscopies in corpses of non selected individuals autopsied at the Medico Legal Service and periodic national serologic surveys. The advise of one of the authors in an epidemic that occurred in 1999 in the VIII Region was also used. Animal infection was assessed using the annual prevalence of infection in pigs slaughtered in abattoirs, furnished by the Ministry of Health. Results: A total of 631 clinical cases with 4 deaths (0.6%) was recorded. A decline in the incidence, from 0.7 x 100,000 in 1991 to 0.2 x 100,000 in 2000 was recorded. The higher frequency of the parasitosis was observed in the Metropolitan, VI, VIII and X regions. Although human trichinosis has been observed in all seasons, its frequency increases in close relation with the higher pork consumption in cold seasons (45.8% in winter and 37.5% in spring). There has been a decrease of infection rates in pigs from 0.17%o in 1991 to 0.04%o in 1998 - 2000. Conclusions: The incidence and prevalence of trichinosis shows a constant decline in Chile. Considering the geographical characteristics of Chile, it is possible that an undetermined number of pigs are home reared and butchered without veterinary control, constituting an important source of human trichinosis (Rev Méd Chile 2002; 130: 281-5

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Estandarización de la ELISA IgM e IgA para el inmunodiagnóstico de la triquinosis humana/ Standarization of ELISA IgM and IgA for immunodiagnosis of human trichinosis

Contreras, María del C.; Acevedo, Elsa; Aguilera, Susana; Sandoval, Lea; Salinas, Patricia

Resumen en inglés An ELISA test for trichinosis using as antigen a larvae soluble fraction from Trichinella spiralis was carried out for the detection of IgMand IgA specific antibodies in 45 serum samples from patients confirmed or suspected to have trichinosis by strong clinical and epidemiological evidences. All the patients had positive serology detected by precipitin test, bentonite floculation test, indirect hemagglutination test and ELISA IgG test. The cut-off value was determined us (mas) ing two criteria. Criterion A was determined in each plate, using three positive controls and two negative ones; the average of the negative controls and the weakest positive control, muliplied by a 1.2 factor was, considered the cut-off value. Criterion B was determinated using the average plus three standard deviations from 64 apparently healthy persons serum samples. In both cases, three serum dilutions (1:10, 1:100 and 1:500) were used. The sensitivity of ELISA IgM was 100.0, 93.3 and 82.2% using serum dilutions of 1:10, 1:100 and 1:500 respectively (criterion A) and 100.0, 97.8 and 95.6% for the same dilutions (criterion B), whereas the values for ELISA IgA were: 100.0, 91.1 and 86.7% (criterion A) and 100.0, 100.0 and 91.1%(criterion B). In order to find out the specificity of ELISA IgM and ELISA IgA, additional118 serum samples from individuals with other parasitoses, such as cysticercosis (18) hydatidosis (39), fascioliasis (12), toxocariasis (30), Chagas' disease(12) and individuals with non-specif eosinophilia (7), were also tested. ELISA IgM presented a specificity of 92.3, 93.4 and 97.3% (criterion A) and 96.2, 97.8 and 97.8% (criterion B) whereas the results for ELISA IgA were 97.8, 98.9 and 99.4% (criterion A) and 98.4% for the 1:10 and 1:100 dilutions and 100.0% for the 1:500 dilution (criterion B). The positive predictive values of ELISA IgM were 76.3, 77.8 and 88.1% (criterion A) and 86.5, 91.7 and 91.5% (criterion B) whereas the negative ones were 100.0, 98.3 and 95.7% (criterion A) and 100.0, 99.4 and 98.9% (criterion B). The positive predictive values of ELISA IgA were 91.8, 95.3 and 97.5% (criterion A) and 93.8, 93.8 and 100.0% (criterion B) whereas the negatives ones were: 100.0, 97.8 and 96.8% (criterion A) and 100.0, 100.0 and 97.8%(criterion B). The use of ELISA IgM and ELISA IgA in the immunodiagnosis of trichinosisis discussed

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Estandarizacion y evaluacion de un enzimoinmunoensayo para diagnostico y seroepidemiologia de triquinosis humana/ Standardization and evaluation of an enzyme immunoassay for diagnosis and seroepidemiology of human trichinosis

Coltorti, Emílio; Fernandez, Eduardo; Santillán, Graciela

Resumen en español Se estandarizó un enzimoinmunoensayo (EIE) en fase sólida en el que se empleó un antígeno soluble total de T. spiralis y una dilución única de suero, y se evaluó la capacidad del sistema para detectar anticuerpos totales antitriquina con fines diagnósticos y seroepidemiológicos. Las curvas dosis respuesta mostraron que trabajando con una dilución de suero de 1:100 se obtenía una buena diferenciación entre sueros de indivíduos no infectados y pacientes de triq (mas) uinosis con baja concentración de anticuerpos circulantes y la respuesta fue lineal entre valores de 0.15 y 0.64 unidades de densidad óptica (DO). El estúdio de 720 sueros de población general no infectada revelo una X k = 0.07 y una S = 0.03 unidades de DO. El 98,61% de esta población presentó valores de DO Resumen en inglés An enzyme immunoassay (EIA) in solid phase'in which a whole soluble Trichinella spiralis antigen and a single serum dilution were used was standardized and its capacity for detecting total anti-trichinella antibodies for diagnostic and seroepidemiological purpose was evaluated. Dose response curves showed that a working dilution of 1:100 permitted an adequate differentiation between trichinosis patients with low circulating antibodies concentration and non infected indivi (mas) duals; the response was linear between OD values of 0.15 and 0.64. A group of 720 sera from trichinosis free general population showed an arithmetic mean of OD values of 0.07 and a standard deviation of 0.03. OD values were

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Zoonosis/ Zoonoses

Dabanch P, Jeannette

Resumen en inglés Ecological, climatic and sociocultural changes, have enhanced the number of known zoonoses being over 200 at the present. Transmission of infectious agents from animals to man occurs by direct contact with the animal, o by ingestion, inhalation or inoculation of infectious agent. In the Región Metropolitana 71 percent of houses with children have pets, mainly dogs, and 58 percent of immunosupressed children have pets too. Dog bites can transmit Capnocytophaga sp and Past (mas) eurella sp that colonize their mouse. Cat transmits Bartonella henselae, being the seroprevalence of B. henselae in cats studied in Santiago 86 percent. Toxocara spp are highly prevalent parasites but unnoticed pathogens in our country, in 84,9 percent of ground samples obtained from public squares of the Metropolitan area Toxocara eggs were detected. Toxoplasma gondii, a scarcely symptomatic infection in immunocompetent hosts but highly symptomatic in immunocompromised patients, has a seroprevalence of 25 to 40 percent in Chile. Trichinosis is a sporadic disease, in pigs slaughtered in the Metropolitan area, Trichinella spiralis prevalence is 0,04 percent. Tinea and Salmonelosis are other frequent zoonoses in infancy, their mean epidemiological features and clinical manifestations are presented. Leptospirosis causes sporadic outbreaks in rural zones. To reduce the frequency of zoonoses, the education of pets owners with respect to their animal health, to stimulate a periodic veterinary control, to vaccinate pets on time as reinforcement of sanitary control of meals of animal origin is recommended

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La parasitología y la entomología en la narrativa latinoamericana del siglo XX/ Parasitology and entomology in the 20th century Latin American narrative

Schenone, Hugo

Resumen en inglés In the present reviev of twelve pieces produced by distinguished 20th century Latin American writers Jorge Luis Borges from Argentina, Jorge Amado and João Ubaldo Ribeiro from Brazil, José Donoso from Chile, Gabriel García Márquez from Colombia, Alejo Carpentier from Cuba, Miguel Angel Asturias from Guatemala, Octavio Paz from Mexico, Mario Vargas Llosa from Perú, Horacio Quiroga and Mario Benedetti from Uruguay and Arturo Uslar-Pietri from Venezuela ­ paragraphs (mas) or parts of paragraphs in which parasitological or entomological situations of the most varied hues are referred to or described, have been extracted in a selective form. Sometimes in these descriptions appear, local or regional expressions, without ignoring colorful folkloric representations. For a easier interpretation these or part of these paragraph sentences have been arranged by thematic similarities. In a varied and kaleidoscopic vision, it will be possible to find protozooses (malaria, Chagas disease, leishmaniasis, amibiasis), helminthiases (ascariasis, hydatidosis, trichinosis, schistosomiasis, cysticercosis, onchocerciasis), parasitoses produced by arthropods (pediculosis, scabies, tungiasis, myiasis), passing progressivelly to hemaphagous arthropods (mosquitoes, gnats, horse flies, bedbugs, ticks), venomous arthropods (Latrodectus spiders, scorpions, wasps, bees), mechanical vectors (flies and cockroaches), culminating with a conjuction of bucolic arthropods (butterflies, crickets, grasshoppers cicadas, ants, centipedes, beetles, glowworms, dragonflies)

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