Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)

Causapé, A. C.; Quílez, Joaquín; Sánchez-Acedo, Caridad; Cacho, Emilio del; López-Bernad, F.

doi:10.1016/s0304-4017(01)00639-2

Cited by 92 publications

(73 citation statements)

References 24 publications

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“…The number of positive lambs was 19 (prevalence (p) = 12.5%) and the number of positive goat kids was 5 (p = 4.8%). Both in lambs (Olson et al, 1997;Abd-El-Wahed, 1999;Majewska et al, 2000;Causape et al, 2002) and in goat kids (Rossanigo et al, 1987;Matos-Fernandez et al, 1993;Noordeen et al, 2000;Watanabe et al, 2005) the prevalence was rather low compared to prevalence studies in other parts of the world, although both for sheep and for goats 30% of the farms had at least one positive animal at the time of the visit. In Africa similar prevalences were found in extensively reared calves (Mtambo et al, 1997;Geurden et al, 2006) altough a higher calf prevalence was described in Uganda (Nizeyi et al, 2002).…”

Section: Resultsmentioning

confidence: 86%

“…Most data on cryptosporidiosis in farm animals concern calves and only a few cross-sectional studies have been performed to estimate the prevalence of C. parvum in small ruminants. In sheep prevalences between 10.1% and 68.3% have been described in young animals (Olson et al, 1997;Abd-El-Wahed, 1999;Majewska et al, 2000;Causape et al, 2002) and in goats between 11.0% and 35.2% (Rossanigo et al, 1987;Matos-Fernandez et al, 1993;Noordeen et al, 2000;Watanabe et al, 2005), indicating that C. parvum might be equally prevalent in small ruminants as in calves. Not only in ruminants, but also in man Cryptosporidium is reported on a regular basis, especially in sub-Saharan Africa.…”

Section: Introductionmentioning

confidence: 99%

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The prevalence and molecular characterisation of Cryptosporidium spp. in small ruminants in Zambia

Goma

Geurden

Siwila

et al. 2007

Small Ruminant Research

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Although Cryptosporidium spp. have been associated with diarrhea and mortality in sheep and goats, this is the first study to estimate the prevalence of Cryptosporidium spp. in small ruminants in Southern Africa. Between August 2003 and February 2004, a cross-sectional study with single random sampling was carried out in three Zambian provinces: Central, Southern and Lusaka province. Faecal samples from lambs and goat kids less than 3 months of age were collected and examined using the TechLab Cryptosporidium ELISA. Faecal samples of 257 animals were collected: 152 lambs on 18 farms and 105 goat kids on 13 farms. The prevalence of Cryptosporidium spp. in lambs and goat kids was 12.5% and 4.8%, respectively and 30% of the sheep and goat farms had at least one positive animal at the time of the visit. A subset of the positive samples was withheld for molecular characterisation. Based on sequences obtained after amplification of the 70 kDa heat shock protein and the Cryptosporidium 18SrRNA gene, C. parvum was identified in all but one of the animals. In this lamb C. suis was identified. The results of the present study indicate that the animal prevalence in lambs and goats kids is rather low. However, the identification of C. parvum illustrates that small ruminants might be potential reservoir for human infection in Zambia.

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Section: Resultsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

The prevalence and molecular characterisation of Cryptosporidium spp. in small ruminants in Zambia

Goma

Geurden

Siwila

et al. 2007

Small Ruminant Research

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“…Esse resultado confirma outros já encontrados por Causapé et al (2002), que observaram 93,3% de cordeiros infectados por Cryptosporidium spp., na primeira semana de vida, com diarreia. No Brasil, não há relato das espécies e genótipos envolvidos nesta parasitose ovina.…”

Section: Dois Animais Com Diarreia E Positivos Paraunclassified

Ocorrência e caracterização molecular de Cryptosporidium em cordeiros

Feres

Lombardi

Carvalho

et al. 2009

Arq. Bras. Med. Vet. Zootec.

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“…The entire surface of the smears (size 5.0 cm × 2.4 cm) was observed under an oil immersion lens (1,000 ×). Infection intensity was semi-quantitatively evaluated: negative (absence of oocysts), few (one-two oocysts per field), many (over two oocysts per field) (Causapé et al, 2002). …”

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confidence: 99%

Prevalence ofCryptosporidiuminfection in goats maintained under semi-extensive feeding conditions in the Southeast of Spain

et al. 2009

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Summary :The aim of the present study was to estimate the prevalence of Cryptosporidium parvum infection in goats maintained under semiextensive feeding conditions in the southeast of Spain. Four farms took part in the study. Samples were obtained during the autumn and spring kidding seasons. The goats were divided into three groups: group I (0-15 days), group II (> 15 days-2 months) and group III (> 2 months-9 years). Faecal specimens were concentrated and smears of the sediment (25 µl) were stained by the modified Ziehl-Neelsen acid fast technique. Parasite oocysts were identified in all the farms; of the 582 goats, 111 were found to have the parasite in their faeces, i.e. the prevalence was 19.1 %. The frequency distributions of the Cryptosporidium oocyst counts according to the age categories were 10.4 %, 13.4 % and 25.2 % for groups I, II and III respectively. With respect to the kidding season, no differences were found. The present study revealed the high prevalence of Cryptosporidium infection in goats in the studied zone. or arid and semi-arid regions of the Mediterranean zone, livestock farming based on extensive or semi-extensive feeding conditions is proposed as the option offering greatest productive possibilities. In this context, the goat is a species of choice because of its ability to adapt to these climatic conditions and thanks to the high value of caprine products, milk and meat (Boza, 2005). However, goats are among the farm animals that are most affected by cryptosporidiosis, and farmers suffer considerable financial losses on this account. Cryptosporidium infection may have an important economic impact on farmers because of high morbidity and sometimes high mortality rates among farm animals (Casemore et al., 1997). This mortality increases when the disease in associated with concurrent infections or deficiencies in nutrition or husbandry (de Graaf et al., 1999). Moreover, Cryptosporidium oocysts excreted with the faeces of infected farm animals can be a source of human infection, and there is a high incidence of the disease in AIDS patients, against which there is no consistently effective treatment (Tzipori, 1998). In goats, infection was first described in Australia in a 2-week-old kid with diarrhoea (Mason et al., 1981). Since then, the infection has been diagnosed in outbreaks of diarrhoea and prevalence in goat kids has been reported in several European countries (Majewska et al., 2000). In Spain Cryptosporidium infection in small ruminants was first diagnosed in 1985 (Rojo Vázquez et al., 1985); subsequently, cryptosporidiosis was reported from different geographical areas (Rojo Vázquez et al., 1987; Matos-Fernández et al., 1993;Castro-Hermida et al., 2007). Taking into account this background and its relevance, the aim of the present study was to estimate the prevalence in relation to age and kidding season of Cryptosporidium infection in goats at randomly selected farms in the southeast of Spain. RésuméArticle available at http://www.parasite-journal.org or http://dx.doi.org/10.1...

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Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)

Cited by 92 publications

References 24 publications

The prevalence and molecular characterisation of Cryptosporidium spp. in small ruminants in Zambia

The prevalence and molecular characterisation of Cryptosporidium spp. in small ruminants in Zambia

Ocorrência e caracterização molecular de Cryptosporidium em cordeiros

Prevalence ofCryptosporidiuminfection in goats maintained under semi-extensive feeding conditions in the Southeast of Spain

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