The public health and clinical significance of Giardia and Cryptosporidium in domestic animals

Thompson, R.C.A.; Palmer, Carlysle S.; O’Handley, Ryan

doi:10.1016/j.tvjl.2007.09.022

Cited by 269 publications

(256 citation statements)

References 79 publications

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“…cysts are eliminated through feces intermittently, but this sporadic shedding of cysts by dogs may still give rise to zoonotic risk (TRAUB et al, 2004). Most epidemiological surveys of infections with gastrointestinal parasites in dogs and cats are based on examination of a single stool sample, which may provide underestimation of occurrences of this parasite (THOMPSON et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Occurrences of gastrointestinal parasites in fecal samples from domestic dogs in São Paulo, SP, Brazil

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Pena

Azevêdo

et al. 2016

Rev. Bras. Parasitol. Vet.

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Occurrences of gastrointestinal parasites were assessed in fecal samples from 3,099 dogs in the metropolitan region of São Paulo, SP, that were treated at the Veterinary Hospital of the University of São Paulo Veterinary School. The samples were analyzed using the flotation and centrifugal sedimentation methods. The results were compared with those from previous studies (at different times). The frequency of each parasite was correlated with the dogs' ages, breeds and gender, as well as the occurrences of diarrhea and the use of anthelmintics, by means of the chi-square or Fisher exact test. Partitioned chi-square tests were used to compare occurrences of each parasite and the times analyzed. Out of the total number of samples, 20.5% were positive and 16.1% (102/635) of these presented more than one genus of parasites. Ancylostoma spp. (7.1%) and Giardia spp. (5.5%) were the most frequent helminths and protozoa, respectively. Ancylostoma spp. was associated (p<0.05) with age (over one year), mixed breeds, sex (male) and no use of anthelmintics. Dogs under one year and mixed breeds were associated with occurrences of Toxocara canis; and younger dogs with Giardia spp., Cryptosporidium spp. and Cystoisospora spp. Giardia spp. were also associated with dogs with a defined breed (p<0.05). All the parasites analyzed presented lower incidence in the last period analyzed than in the previous periods.Keywords: Dogs, helminths, protozoa, São Paulo, Brazil. ResumoA ocorrência de parasitos gastrintestinais foi estudada em amostras fecais de 3099 cães, da região metropolitana de São Paulo, SP, tratados no Hospital Veterinário da Faculdade de Medicina Veterinária da Universidade de São Paulo. As amostras foram analisadas por métodos de flutuação e centrífugo-sedimentação. Os resultados foram comparados com estudos prévios (diferentes períodos). Associação entre as frequências de cada parasito e idade, raça, sexo, ocorrência de diarreia e uso de anti-helmínticos foram analisadas pelo teste do qui-quadrado ou exato de Fisher. O qui-quadrado estratificado foi utilizado para comparar a ocorrência de cada parasito e os períodos analisados. Do total 20,5% das amostras eram positivas e 16,1% destas (102/635) apresentaram mais de um gênero de parasitos. Ancylostoma spp. (7,1%) e Giardia spp. (5,5%) foram os mais frequentes helminto e protozoário, respectivamente. Ancylostoma spp. foi associado (p<0,05) com idade (> 1 ano), animais sem raça definida, sexo (macho) e a não utilização de anti-helmínticos. Cães < 1 ano e mestiços apresentaram associação com ocorrência de Toxocara canis e cães jovens com Giardia spp, Cryptosporidium spp. e Cystoisospora spp. Giardia spp. também apresentou associação com cães de raças definidas (p<0,05). Para todos os parasitas analisados a incidência diminuiu no último período analisado quando comparado aos anteriores.

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Section: Discussionmentioning

confidence: 99%

Occurrences of gastrointestinal parasites in fecal samples from domestic dogs in São Paulo, SP, Brazil

Ferreira

Pena

Azevêdo

et al. 2016

Rev. Bras. Parasitol. Vet.

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“…at three sites (6, 8 and 9). The protozoan parasites Giardia and Cryptospor-idium, generally associated with livestock farming and domesti-cated animals (Thompson et al, 2008;Olson et al, 1997), were detected at site 9, 10 and 11, the latter two sites located immedi-ately down-stream of cattle feedlots.…”

Section: Occurrence Of Pathogensmentioning

confidence: 99%

Health risk implications from simultaneous exposure to multiple environmental contaminants

Genthe

Roux

Schachtschneider

et al. 2013

Ecotoxicology and Environmental Safety

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Keywords:Heavy metals Oestradiol Human health Microbial pathogens Water quality abstract Water quality has deteriorated in the upper Olifants River system, South Africa, as a result of land use activities which include mining, agriculture and industries. A health risk assessment was conducted from 2009 to 2011 in the catchment to determine the possible risks local communities face from various pollutants such as microbials, heavy metals and oestrogen in the river water and vegetation. Aluminium and manganese accumulated in plants and vanadium and aluminium concentrations found in selective water samples posed significant health risks when consumed. A quantitative microbial risk assessment revealed that the combined risk of infection ranged from 1 to 26 percent with the Norovirus posing the overall greatest health risk. The anticipated disability adjusted life years resulting from drinking untreated water from these sites are in the order of 10,000 times greater than what is considered acceptable. The oestradiol activity, caused by endocrine disrupting compounds in the water, measured above the trigger value of 0.7 ng L −1 . Impoverished communities in the area, who partially depend on river water for potable and domestic use, are exposed to immune-compromising metals that increase their probability of infection from waterborne diseases caused by the excess microbial pathogens in the contaminated surface water.

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“…Para esclarecer el potencial zoonótico de las infecciones con G. duodenalis en animales, es importante determinar si los seres humanos y otros huéspedes son vulnerables ante infecciones con formas genéticamente idénticas del parásito (3,17).…”

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Genotipos de Giardia duodenalis en niños de las guarderías del Instituto Colombiano de Bienestar Familiar y de caninos en Ibagué, Tolima, Colombia

et al. 2014

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The public health and clinical significance of Giardia and Cryptosporidium in domestic animals

Cited by 269 publications

References 79 publications

Occurrences of gastrointestinal parasites in fecal samples from domestic dogs in São Paulo, SP, Brazil

Occurrences of gastrointestinal parasites in fecal samples from domestic dogs in São Paulo, SP, Brazil

Health risk implications from simultaneous exposure to multiple environmental contaminants

Genotipos de Giardia duodenalis en niños de las guarderías del Instituto Colombiano de Bienestar Familiar y de caninos en Ibagué, Tolima, Colombia

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