Effect of fox, pig, sheep, and poultry bile on the establishment of domestic and sylvatic species of <i>Trichinella</i> in rats

Théodoropoulos, Georgios; Styliara, M.; Petrakos, M.; Kapel, Christian M. O.

doi:10.1017/s003118200300307x

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…Although the ELISA and blotting assays used in the present study are probably more sensitive methods of detecting Trichinella infection than either trichinoscopy or muscle digestion, the seroprevalences and seroconversions recorded in 2000-2002 are worrying. Similarly, even though the sample was small, the prevalence recorded in the rodents (15.4%) is also cause for concern, indicating that, as observed in other regions of the world (Loufty et al, 1999;Theodoropoulos et al, 2003), a 'reservoir' of Trichinella may be maintained by horizontal transmission among local rats and mice, even in the absence of pigs. Rodent densities in the study area (as indicated by the 2.7 rodents caught/100 trap-nights) appear much lower than those recorded, by Larrieu et al (2002), elsewhere in Río Negro province (12-35 rodents/100 trap-nights).…”

Section: Discussionmentioning

confidence: 89%

Porcine and rodent infection withTrichinella, in the Sierra Grande area of Río Negro province, Argentina

Larrieu

Molina

Albarracín³

et al. 2004

Annals of Tropical Medicine & Parasitology

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In 2000, two cases of human trichinellosis were detected in the Sierra Grande area of Rio Negro province, Argentina. As part of an investigation of the aetiology of these cases, 300 pigs slaughtered for consumption in the area between 2000 and 2002 were checked for Trichinella infection, by artificial digestion of a muscle sample. Twelve (5.6%) - four (7.3%) of the 55 checked in 2000, five (4.8%) of the 105 investigated in 2001, and three (2.1%) of the 140 investigated in 2002 - were found infected. Blood samples were collected from other pigs aged > 6 months old, so that sera could be tested, in ELISA and by western blotting, for anti- Trichinella antibodies. Of the 181 animals checked in the initial serological survey, 36 (19.9%) were found seropositive for Trichinella. When 35 of the seronegative pigs were re-checked 6 months later, three (8.6%) were found to have seroconverted. Four (15.4%) of 26 local rodents, caught in Sherman-type traps, were also found positive when checked for infection by artificial digestion. It appears that about 20% of pigs in the study area are infected each year, this high level of transmission being sustained by a high prevalence of infection in the local rodent populations.

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Section: Discussionmentioning

confidence: 89%