| transmission dynamics of echinococcus granulosus, taenia hydatigena and taenia ovis in sheep in uruguay. | a base-line survey was carried out on the transmission dynamics of echinococcus granulosus, taenia hydatigena and taenia ovis in sheep in the department of florida, uruguay. mean life expectancy at birth of the sheep population in this department was estimated at 3.5 and 4.8 years for male and female sheep, respectively. both intensity and prevalence of e. granulosus infection increased with age providing no evidence that immunity was acquired in the population. this revealed that e. granulosus ... | 1995 | 7558566 |
| rates of reinfection with echinococcus granulosus, taenia hydatigena, taenia ovis and other cestodes in a rural dog population in uruguay. | a survey was undertaken to determine both the prevalence of, and reinfection rates with echinococcus granulosus and other cestodes in the department of florida, uruguay. baseline prevalence was determined in 303 rural dogs which then, in 4 groups, were re-examined 2, 4, 8 or 12 months later. baseline prevalences for e. granulosus, taenia hydatigena, taenia ovis and dipylidium caninum were 13.2, 13.9, 2.3 and 13.2%, respectively. the frequency distribution of e. granulosus was over-dispersed. dog ... | 1996 | 9198601 |
| risk factors associated with human cystic echinococcosis in florida, uruguay: results of a mass screening study using ultrasound and serology. | sonographic evidence of asymptomatic echinococcus granulosus lesions in the liver was found in 156 of 9,515 persons in the department of florida, uruguay. the sensitivity of elisa and latex agglutination serology compared with ultrasound was 47.6% and 28.1%, respectively, and specificity was > 85%. there was a significant positive association between positive sonography and a personal history of previous but treated echinococcus infection while those that were seropositive but ultrasound-negativ ... | 1998 | 9598448 |
| control of echinococcus granulosus in uruguay: evaluation of different treatment intervals for dogs. | this study attempted control of transmission of echinococcus granulosus from dogs to sheep in different areas in the department of florida, uruguay, by treating dogs with praziquantel at intervals of 6, 12 and 16 weeks. the 6-week interval was based on the prepatent period of infection with e. granulosus, the 12- and 16-week intervals were based on the rate of reinfection with tapeworms in dogs in the area. dogs had become reinfected with e. granulosus between 2 and 4 months after treatment, whe ... | 2002 | 11777612 |