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[Current trends of the epidemiology of human trichinosis in Chile]. [智利人类旋毛虫病流行病学的当前趋势]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
H Schenone, R López, E Barilari, M C Contreras, D Castillo
{"title":"[Current trends of the epidemiology of human trichinosis in Chile].","authors":"H Schenone,&nbsp;R López,&nbsp;E Barilari,&nbsp;M C Contreras,&nbsp;D Castillo","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Surveillance of the epidemiology of human trichinosis in Chile has been maintained during the last 30 years by the Department of Parasitology. Incidence and prevalence have been followed-up by analysing Ministry of Health annual reports and periodical phototrichinoscopic examination of diaphragm samples from individuals autopsied at the Santiago Medico Legal Service. A decrease has been observed on: incidence from 1.4 per 100,000 in the 1960s to 0.7 in the 1980s down to 0.3 in 1993 and 1994 and to 0.5 in 1995, and prevalence from 3.4% to 2.8%, 2.0% and 0.8% in 1972, 1982, 1992 and 1997 respectively. A predominance of the prevalence in the groups of more age, with the observation of calcified Trichinella spiralis larvae should be indicating a decline of new infections in the general population. This decrease of frequency of human trichinosis in Chile is possible due to the interaction of two main factors, efficacy and higher implementation of control measures and significant advances in porcine technology with a resulting provision to consumers of pork from young animals practically trichinosis free.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"22-5"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Morphological, clinical and therapeutic characteristics of Cyclospora cayetanensis]. [卡耶坦环孢子虫的形态、临床和治疗特点]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
J Colomina Rodríguez, J Villar Serrano
{"title":"[Morphological, clinical and therapeutic characteristics of Cyclospora cayetanensis].","authors":"J Colomina Rodríguez,&nbsp;J Villar Serrano","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the last years Cyclospora sp. has been increasingly associated to human intestinal diseases. The first studies have been reported to this parasite as a Cyanobacterium-like body, large Cryptosporidium or coccidian-like body. The ultrastructural characteristic and the \"in vitro\" sporulation have revealed the existence of oocyst constituted for two sporocysts with two sporozoites per sporocyst. This evidence has allowed its classification as a coccidian within the genus Cyclospora and its designation as a new pathogen species in humans, Cyclospora cayetanensis. Recently phylogenetic analysis based on rDNA sequences suggested that Cyclospora sp. was closely related to the Eimeria genus. The identification, morphological characteristics, clinical evaluation and chemotherapy of the human intestinal disease associated to Cyclospora sp. are commented in the present paper.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"26-32"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Human infection by intestinal protozoa and helminths in Calbuco County, X Region, Chile, 1997]. [1997年智利X地区卡尔布科县人肠道原虫和蠕虫感染]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
R Mercado, J P Otto, M Musleh, M Pérez
{"title":"[Human infection by intestinal protozoa and helminths in Calbuco County, X Region, Chile, 1997].","authors":"R Mercado,&nbsp;J P Otto,&nbsp;M Musleh,&nbsp;M Pérez","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By the performance of parasitological examination of one fecal sample per individual, a total of 256 persons from a rural county in the X Region (41 degrees 50 minutes South lat., 73 degrees 05 minutes West long.) were studied. The general rates of infection by intestinal parasite and/or commensal protozoa and helminths found were: Giardia intestinalis 14.1%, Entamoeba histolytica 11.7%, Blastocystis hominis 36.0%, Entamoeba coli 9.8%, Endolimax nana 16.4%, Iodamoeba buetschlii 1.2%, Chilomastix mesnili 0.8%, Ascaris lumbricoides 13.7% and Trichuris trichiura 9.8%. The prevalence rates of intestinal infection led us to conclude that environmental conditions favorable for its transmission remain and show that intestinal parasitoses are still a public health problem in this region, affecting mostly children.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"36-8"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Helminth parasites of Larus dominicanus in Argentinian Patagonia]. [阿根廷巴塔哥尼亚多米尼松毛虫的寄生虫]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
A Kreiter, L Semenas
{"title":"[Helminth parasites of Larus dominicanus in Argentinian Patagonia].","authors":"A Kreiter,&nbsp;L Semenas","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The presence of 9 endohelminths was quoted for Larus dominicanus of which 6 were new citations in Patagonia (Argentina) for this host: Stephanoprora, Cryptocotyle, Anomotaenia, Polymorphus, Contracaecum and Capillaria. For the first time Cryptocotile is being cited in Argentina.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"39-42"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Frequency of Toxocara cati eggs in domestic cats in Mexico City and the State of Mexico]. [墨西哥城和墨西哥州家猫中猫弓形虫卵的频率]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
I Martínez Barbabosa, L A Ruiz González, M Gutiérrez Quiroz, A M Fernández Presas, O Vásquez Tsuji
{"title":"[Frequency of Toxocara cati eggs in domestic cats in Mexico City and the State of Mexico].","authors":"I Martínez Barbabosa,&nbsp;L A Ruiz González,&nbsp;M Gutiérrez Quiroz,&nbsp;A M Fernández Presas,&nbsp;O Vásquez Tsuji","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Toxocariosis is a zoonosis which has been widely studied in dogs. However, not much is known about this parasitosis in cats. The aim of the present work was to determine the frequency of Toxocara cati in domestic cats in Mexico City and the State of Mexico. Feces of 660 domestic cats were studied by the Faust concentration-floating test; 401 samples were from cats living in Mexico City of which 308 lived in houses and 93 in apartments; 231 were from urban areas of the State of Mexico and 28 from a rural area of the same state. The total frequency of T. cati eggs obtained from domestic cats in Mexico City was 42.9%; in cats living in apartments it was 18.3% and in cats living in houses it was 50.3%. In domestic cats from the State of Mexico, T. cati frequency was 36.4% in the urban and 21.4% in the rural areas. We consider that toxocariosis frequency observed at the two studied sites is high and that the need to prevent dissemination of the infectious forms of T. cati is urgent, as is the necessity of informing the population of the risk of living with T. cati parasited animals and of the anatomopathological alterations caused by T. cati in man.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"12-7"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Infection by intestinal protozoa and helminths in schoolchildren from riverside sectors, with different fecal contamination levels, of Valdivia River, Chile]. [智利瓦尔迪维亚河沿岸地区学童肠道原生动物和蠕虫感染，粪便污染程度不同]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
P Torres, L Otth, A Montefusco, G Wilson, C Ramírez, M Acuña, F Marín
{"title":"[Infection by intestinal protozoa and helminths in schoolchildren from riverside sectors, with different fecal contamination levels, of Valdivia River, Chile].","authors":"P Torres,&nbsp;L Otth,&nbsp;A Montefusco,&nbsp;G Wilson,&nbsp;C Ramírez,&nbsp;M Acuña,&nbsp;F Marín","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>During 1993, the prevalences of infection by intestinal protozoa and helminths (IPH) in the riverside schoolchildren population of two sectors of Valdivia river, with different levels of fecal contamination, were compared in relation to their contact with river water (swimming, bathing) and basic sanitation elements (BSE) of their houses: feces and garbage disposal, and water supply. Populations of children from sectors A (n = 418), with significatively greater (SG) total coliform most probable number (MPN), and sector B (n = 400), were examined. PAFS test was used for the stool examination of one sample, from each child. The global prevalence of infection by IPH was similar in A (74.8%) and B (72.5%) sectors. From 10 identified IPH, only Entamoeba histolytica and Hymenolepis nana showed prevalences of infection SG in sector A, than in sector B. The contact of the children with the water of the river showed association with SG prevalences for E. histolytica, Entamoeba coli and Endolimax nana in sector B and for E. histolytica in sector A. No sanitary condition for the different BSE contributed to SG prevalences for E. histolytica, Ascaris lumbricoides and Trichuris trichiura in both sectors, and for E. coli in sector B. The contact with the river water and the different BSE contributed to prevalences SG in 5 and 3 IPH in sectors B and A, respectively. The results suggest that a project in study for the development of a treatment plant of wastewater in sector A, could contribute to control infection by IPH. But, this measure must be associated with improvement of the BSE, health education, and application of chemotherapy measures for geohelminthosis in both sectors.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"3-11"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Infection by Toxoplasma gondii in children with infantile cerebral palsy]. [小儿脑瘫患儿刚地弓形虫感染]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
J Tay, M Gutiérrez Quiroz, A M Fernández Presas, R Romero Cabello, L Ruiz González, I Martínez Barbabosa
{"title":"[Infection by Toxoplasma gondii in children with infantile cerebral palsy].","authors":"J Tay,&nbsp;M Gutiérrez Quiroz,&nbsp;A M Fernández Presas,&nbsp;R Romero Cabello,&nbsp;L Ruiz González,&nbsp;I Martínez Barbabosa","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An analytic relationship between positivity of the indirect immunofluorescent test (IIFT) for toxoplasmosis and clinical findings in a population of 328 children with cerebral infantile palsy (CIP) was performed. Children were distributed by age in one of four groups: I (0-2 years); II (3-6 years); III (7-12 years) and IV (13-18 years). One control group of 168 children with no PCI clinical findings was included. 125 sera were positive at 1:64 dilutions. The study of the binomial mother-child of 40 cases rendered 26 mothers with significant titer values. The majority of positive mothers to IIFT correlated with the youngest children (Groups I, II and III), mainly with group I (70.0%), which showed the highest titer ranges. Correlation between positive IIFT and clinical features was as high as 100.0%.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"17-21"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Epidemiological study of pediculosis capitis and scabies in schoolchildren from Antofagasta, Chile, 1995]. [1995年智利安托法加斯塔市学龄儿童头癣和疥疮流行病学研究]。
Boletin chileno de parasitologia Pub Date : 1997-01-01
H Sagua, A M Rivera, M Zamora, I Neira, J Araya, R Maluenda
{"title":"[Epidemiological study of pediculosis capitis and scabies in schoolchildren from Antofagasta, Chile, 1995].","authors":"H Sagua,&nbsp;A M Rivera,&nbsp;M Zamora,&nbsp;I Neira,&nbsp;J Araya,&nbsp;R Maluenda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In order to contribute to a better knowledge of the pediculosis capitis and scabies during March-December 1995, 1122 primary schoolchildren under 14 years of age in the city-port of Antofagasta in northern Chile (20 degrees South lat.), were examined. A total of 285 (25.4%) were found to be infested with Pediculus humanus capitis and only 20 (1.8%) with Sarcoptes scabiei. In general the rates of infestation to both ectoparasitic diseases were higher in groups of younger schoolchildren, also higher in women than in men and in those groups with high indexes of crowding and ignorance of the transmission mechanism of pediculosis capitis and scabies.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"52 1-2","pages":"33-6"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20422788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Soil contamination with Toxocara sp. eggs in public parks and home gardens from Mexico City]. [墨西哥城公园和家庭花园中弓形虫卵对土壤的污染]。
Boletin chileno de parasitologia Pub Date : 1996-07-01
O Vásquez Tsuji, A Ruiz Hernández, I Martínez Barbabosa, P N Merlín Marín, J Tay Zavala, A Pérez Torres
{"title":"[Soil contamination with Toxocara sp. eggs in public parks and home gardens from Mexico City].","authors":"O Vásquez Tsuji,&nbsp;A Ruiz Hernández,&nbsp;I Martínez Barbabosa,&nbsp;P N Merlín Marín,&nbsp;J Tay Zavala,&nbsp;A Pérez Torres","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Due to de high number of stray dogs and cats which defecate in public places in Mexico City (3 millions approximately), in addition to domestic dogs and cats, exists the potential risk to man of infection by Toxocara sp. eggs. A study to determine the contamination frequency by Toxocara sp. eggs in public parks, public flower beds, and home gardens in Mexico City, Distrito Federal, was carried out in the 1995 first semester. Fourteen hundred and five soil samples were collected from 156 public parks, 83 public flower beds and 42 home gardens across the 16 delegations in Mexico City, Distrito Federal. Samples were processed by the zinc sulfate centrifugal flotation method, and supernatants read by microscopy. Out of the whole 281 sampled sites, 12.5% were found contaminated with Toxocara sp. eggs. Positivity found was: 10.9% in public parks, 13.3% in public flower beds and 16.7% in home gardens. Ninety percent of the eggs were embryonated or larvaeted measuring 60 to 90 micrometers. The high contamination frequencies found make necessary to prompt for Public Health measures granted the risk of infection acquisition spread on the most exposed population (children) provided that it is acquired via geophagia.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"51 3-4","pages":"54-8"},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20242908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Diagnosis of human neurocysticercosis by ELISA-IgG using a purified antigen]. ELISA-IgG对人神经囊虫病的诊断
Boletin chileno de parasitologia Pub Date : 1996-07-01
P Salinas, L Sandoval, E Rugiero, M C Contreras
{"title":"[Diagnosis of human neurocysticercosis by ELISA-IgG using a purified antigen].","authors":"P Salinas,&nbsp;L Sandoval,&nbsp;E Rugiero,&nbsp;M C Contreras","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An analysis of immunodiagnosis data for human neurocysticercosis (NC) by ELISA-IgG, complement fixation test (CFT) and indirect hemagglutination test (IHAT) in 67 serum samples and 54 cerebrospinal fluids (CSF) from confirmed cases of different hospitals from the Metropolitan Area of Santiago, Chile, was performed. The cut-off value was determined by using serum samples from 60 apparently healthy persons, whose absorbance values were the mean plus three standard deviations. The sensitivity of ELISA was 97.0% and 100% for serum samples and CSF respectively. This assay was considered of statistical significance (p < 0.05) when it was compared with CFT. Specificity was established by testing a purified antigen over 109 different helminthiasis serum samples, 185 neurological affections other than NC and 60 control samples. A 98.3% of global specificity was found. The use of ELISA-IgG and a purified antigen in the approach of immune diagnosis of NC is considered a useful assay, particularly if it is performed on paired serum/CSF samples.</p>","PeriodicalId":75607,"journal":{"name":"Boletin chileno de parasitologia","volume":"51 3-4","pages":"85-90"},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20242914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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