Parasitic Diseases

Weese, J. Scott; Peregrine, Andrew S.; Anderson, Maureen; Fulford, Martha

doi:10.1002/9780470958957.ch1

Cited by 8 publications

(10 citation statements)

References 653 publications

(622 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A possible explanation for this, is that the rural area of the Mexicali County is a zone characterised by poor sanitary conditions, where dogs lives in close contact with livestock, rodents and lagomorphs, animal species known to harbor Taenia spp. serving as intermediary hosts to complete their life cycle (Weese et al 2011). This finding is particularly important because in the rural area of the Mexicali County many large feedlot operations take place, with over 300,000 heads of cattle being fattened each year to send selected meat cuts to local and international markets (SEFOA, 2016), which can be at risk of being infected by contamination of food or water supplies with Taenia spp.…”

Section: Resultsmentioning

confidence: 99%

“…Dogs can harbor a wide range of intestinal parasites, some of which have a zoonotic potential, such as Toxocara canis, Dipylidium caninum and Taenia multiceps (Weese et al 2011). Human parasitic infections typically occur following ingestion of infective eggs from contaminated water or soil, ingestion of infected meat from the cattle or ingestion of inadequately washed or cooked fruits and vegetables (Lee et al 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Prevalence and distribution of intestinal parasites in stray dogs in the northwest area of Mexico

Trasviña-Muñoz

López-Valencia

Centeno

et al. 2017

Austral j. vet. sci.

View full text Add to dashboard Cite

ABSTRACT. Zoonotic parasitic infections are a major global public and veterinary health problem and widespread among stray dogs. The objective of this study was to establish the prevalence of intestinal parasites in stray dogs in the urban, rural and coastal areas of Mexicali County in northwest Mexico. In 2014, from January to December, 380 stray dogs were captured. The entire small intestine, cecum and faeces samples were collected and examined by using simple zinc sulfate flotation and Lugol's solution staining. Data were statistically analysed. Overall, about 21.5% of examined dogs were found positive for intestinal parasites. Toxocara canis was the most frequent detected parasite, with a prevalence of 7.1%, followed by Toxascaris leonina (5.5%), Cystoisospora spp. (5.0%), Taenia spp. (3.9%) and Dipylidium caninum (2.8%). Dogs were more frequently found to be infected with a single genus of intestinal parasite (18.7%) than co-infected (2.8%). Intestinal parasites were more prevalent in samples from the coastal area (25%) than in those from the rural (24.4%) and urban (20.6%) areas, however, only statistical association was found between capture area and specific intestinal parasitic infection. There were significant differences in the prevalence of taeniasis among two age groups (P<0.01). A seasonal peak of prevalence for intestinal parasitic infections was found during spring (P<0.05), corresponding with a seasonal peak of prevalence of T. canis (P<0.05). The wide range of isolated parasites indicated that people residing in this area are at risk of exposure to these potentially hazardous zoonotic pathogens.Key words: toxocariasis, taeniasis, Mexico, public health. RESUMEN.Las infecciones zoonóticas parasitarias son un problema global público y para la medicina veterinaria, siendo diseminadas por perros callejeros. El objetivo del estudio fue determinar la prevalencia de parasitosis intestinales en perros callejeros de la zona urbana, rural y costera del municipio de Mexicali, noroeste de México. En 2014, entre enero y diciembre, se capturaron 380 perros. Se colectó el intestino, ciego y heces y se examinaron utilizando flotación con sulfato de zinc y tinción con la solución de Lugol. Los datos fueron analizados estadísticamente. En general, alrededor del 21,5% de los perros examinados fueron positivos a parásitos intestinales. Toxocara canis fue el parásito más frecuentemente, con una prevalencia del 7,1%, seguido por Toxascaris leonina (5,5%), Cystoisospora spp. (5,0%), Taenia spp. (3,9%) y Dipylidium caninum (2,8%). Los perros fueron más frecuentemente encontrados infectados con un solo género de parásito intestinal (18,7%) que coinfectados (2,8%). Las parasitosis intestinales fueron más prevalentes en muestras de la costa (25%) que del área rural (24,4%) y urbana (20,6%), sin embargo solo se encontró asociación estadística entre el área de captura y las parasitosis intestinales específicas. Hubo diferencias significativas en la prevalencia de taeniasis entre los dos grupos de edad (P<0,01). El pico esta...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prevalence and distribution of intestinal parasites in stray dogs in the northwest area of Mexico

Trasviña-Muñoz

López-Valencia

Centeno

et al. 2017

Austral j. vet. sci.

View full text Add to dashboard Cite

show abstract

“…We appreciate that this finding does not demonstrate cross‐transmission of Giardia between human hosts and NHP hosts, but our results support the supposition that this potential exists; until this possibility has been disproved, we suggest it would be preferable to assume that cross‐transmission could occur. At the very least, isolates should not be seen as host exclusive due to placement in a particular sub‐Assemblage, as has, for example, been suggested for A‐II and humans (Weese, Peregrine, Anderson, & Fulford, ). Although there are probably locally adapted biotypes, the data presented here provide supportive evidence for a general zoonotic/anthropozoonotic potential of these isolates.…”

Section: Discussionmentioning

confidence: 98%

Giardia duodenalis in primates: Classification and host specificity based on phylogenetic analysis of sequence data

Brynildsrud

Tysnes

Robertson

et al. 2018

Zoonoses and Public Health

View full text Add to dashboard Cite

Giardia duodenalis colonizes the gastrointestinal tract of a wide range of hosts, including humans and other primates. It is grouped into eight different Assemblages and, beyond that, into a number of sub-Assemblages, defined ad hoc on the basis of genetic differences; these various groups are often considered to be associated with a specific restricted host range. The aim of this study was to use publicly available genotyping data to investigate the relatedness of human and non-human primate (NHP) Giardia isolates in order to evaluate the usefulness of current taxonomic classification and to assess whether there is potential for zoonotic transmission between humans and NHP. Our final data set consisted of sequence data from 165 isolates, 111 from NHP and 54 from humans. Assemblages were well defined, but sub-Assemblages across Assemblage B were not resolved. Although sub-Assemblages AI and AII were resolved, the terms were not found to capture any useful molecular or host/deme properties. In the phylogenetic tree, NHP isolates were scattered among human isolates across Assemblages A and B, and were even found in Assemblage E. We conclude that there does not appear to be significant molecular distinction between human and NHP Giardia isolates across these four molecular markers. Thus, on the basis of these markers, we cannot exclude a risk for zoonotic and anthropozoonotic transmission of Assemblages A and B isolates, irrespective of sub-Assemblage classification. We further evaluated the relative merit of the four genes used in genotyping studies. The tpi, gdh and bg genes gave relatively congruent tree topologies, but the SSU gene did not resolve Assemblages according to the current classification. Future genotyping efforts should aim for multilocus or whole-genome approaches and, in particular, use of the SSU gene as the sole marker should be avoided when possible.

show abstract

“…Weese et al . [ 20 ] recommended serological testing as the main component for the diagnosis of leishmaniasis. Previous serological studies of leishmaniasis in wildlife successfully used the same ICT utilized in the present study [ 14 , 15 ].…”

Section: Resultsmentioning

confidence: 99%

Prevalence of antibodies against visceralizing Leishmania spp. in brown rats from Grenada, West Indies

et al. 2018

View full text Add to dashboard Cite

Background and Aim:Leishmania spp. are known to cause disease in man and animals. Rats are considered important reservoir hosts and transmission takes place through the bite of female sand fly, Phlebotomus spp. To the best of our knowledge, there is no published information on Leishmania infection in rats in Grenada. This study was conducted to estimate the antibodies for visceralizing Leishmania spp. (VL) in rats (Rattus norvegicus) from Grenada.Materials and Methods:A total of 146 brown rats (R. norvegicus) were trapped live from two parishes (St. George and St. David) in Grenada. Following anesthesia, blood was collected from the heart through thoracic puncture. The serum was collected after the centrifugation of blood. Serum was tested for antibodies to VL. with a commercially available immunochromatographic dipstick test which is licensed for use in animals and humans.Results:The seroprevalence of antibodies against Leishmania spp. was found in 34 of 146 rats (23.3%; CI 95% from 16.70 to 30.99). No significant differences were found between sexes and young or adults. The prevalence between parishes (St. George and St. David) was also not significant.Conclusion:The results show that rats (R. norvegicus) in Grenada are exposed to Leishmania spp. The rats could play an important role in the transmission of leishmaniasis to humans and other animals in Grenada.

show abstract

Parasitic Diseases

Cited by 8 publications

References 653 publications

Prevalence and distribution of intestinal parasites in stray dogs in the northwest area of Mexico

Prevalence and distribution of intestinal parasites in stray dogs in the northwest area of Mexico

Giardia duodenalis in primates: Classification and host specificity based on phylogenetic analysis of sequence data

Prevalence of antibodies against visceralizing Leishmania spp. in brown rats from Grenada, West Indies

Contact Info

Product

Resources

About