ABSTRACT
A serological survey was carried out in Osorno X Región, Chile (40º 21'-40º 46' south lat, and 73º 26'-72º-46' west long.). An indirect hemagglutination test (IHAT) for toxoplasmosis was performed to 305 persons, 160 blood donors and 145 with sexuallly transmitted diseases (STD).The age the surveyed persons (167 males and 138 females) varied between 10 and 72 years. IHAT titers >16 were considered as positive. The general prevalence was 20.3 percent, 21.2 percent in blood donors and 19.3 percent in persons with some STD, with no differences between males and females. However, significant differences between males and females with STD were found (35.6 percent and 8.1 percent respectively). No differences between urban and rural inhabitants were found, with a slight higher prevalence in the urban ones. No antibodies against toxoplasma gondii were detected in six AIDS patients. The importance of performing toxoplasmosis immnuodiagnosis and individual profilaxis to avoid the infection in high risk group are recommended
Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Sexually Transmitted Diseases/epidemiology , Toxoplasma/isolation & purification , Toxoplasmosis/epidemiology , Age Distribution , Blood Donors/statistics & numerical data , Chile/epidemiology , Seroepidemiologic Studies , Sex Distribution , Hemagglutination Tests , Toxoplasma/pathogenicity , Toxoplasmosis/etiologyABSTRACT
An outbreak of trichinosis occurred in Purranque county, X Region, Chile, between october and november of 1992, which involved 36 persons. The incubation period, determinated by the clinical picture and laboratory assays, fluctuated between 10 and 12 days, myalgias (88,9 for percent) and palpebral oedema (86,1 por percent) were the most important symptoms, followed by fever (44,4 for percent) and headache (33,3 for percent). Eosinophils count ranged from two to 42 for percent the first week, and this value raised to 55 for percent the second week of the outbreak. Anti-trichinella spiralis antibodies were determinated by some serological tests such as: precipitin test (PT), bentonite flocculation test (BFT) and indirect hemagglutination test (IHAT) in sera IHAT (21,4 for percent) and BFT (3,6 for percent). After 15 days, the three tests were perfomed in sera from 12 patients. At that time, the positivity was elevated in all of them: PT (100,0 for percent), BFT (66,7 for percent) and IHAT (91,7 for percent). It is believed that the outbreak had its origin in infected pork meat that was consumed raw or insufficiently cooked without a previous veterinary inspection
Subject(s)
Humans , Male , Female , Child, Preschool , Adolescent , Adult , Middle Aged , Chile/epidemiology , Disease Outbreaks/statistics & numerical data , Trichinellosis/epidemiology , Eosinophils , Health Surveys , Precipitin Tests , Serologic Tests/statistics & numerical data , Signs and Symptoms , Flocculation Tests , Hemagglutination Tests , Immunologic Tests/methods , Trichinella spiralis/isolation & purification , Trichinellosis/diagnosis , Trichinellosis/physiopathologyABSTRACT
San Juan de la costa County (40-45' South lat., 73-19' West long) is located in the Osorno province, South of Chile. Its population is 8,486 inhabitants. The basic economic activities are agriculture, cattle raising, timber production and manufacture of wood and coal. According to official reports, the incidence of human hydatidosis and trichinosis in this locality in 1989 were 24 and 59% respectively. In order to contribute to a better knowledge of the epidemiology of human hydatidosis and trichinosis in San Juan de la Costa County, an indirect hemagglutination test (IHAT) for these parasitoses was performed to 511 randomized people. Nine (1.8%) individuals resulted positive for hydatidosis and twenty four (4.7%) were positive for trichinosis. Some considerations on the corresponding phrophylactic meaures are proposed
Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Echinococcosis/epidemiology , Trichinellosis/epidemiology , Aged, 80 and over , Chile/epidemiology , Echinococcosis/diagnosis , Educational Status , Hemagglutination Tests , Random Allocation , Rural Health , Trichinellosis/diagnosisABSTRACT
Rio Negro County [40-48'-40-50' South lat.:73-12'-73-13'West long.], is located in the province of Osorno, South of Chile. It has a population of 18.031 inhabitants. With 39% in rural areas. The basic economic activity is cattle raising [cows. pigs]. According to reports, prevalence of human hydatidosis in 1988 was 11.1 per 100.000. In order to contribute to a better knowledge of human hydatidiosis in Rio Negro County, an indirect hemagglutination test [IHAT] was performed to 509 randomized persons. Five [1.0%] individuals resulted positive