Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)
An epidemiologic study was carried out to investigate the prevalence of and to identify factors associated with the risk of Cryptosporidium infection in sheep in Zaragoza (northeastern Spain). Faecal samples from 583 lambs aged from 1 day to 3 months and 205 ewes older than 1 year were collected at...
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| Veröffentlicht in: | Veterinary parasitology 2002-04, Vol.104 (4), p.287-298 |
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| creator | Causapé, A.C Quı́lez, J Sánchez-Acedo, C del Cacho, E López-Bernad, F |
| description | An epidemiologic study was carried out to investigate the prevalence of and to identify factors associated with the risk of
Cryptosporidium infection in sheep in Zaragoza (northeastern Spain). Faecal samples from 583 lambs aged from 1 day to 3 months and 205 ewes older than 1 year were collected at 89 farms in the two regions of the province of Zaragoza with the highest sheep population (Zaragoza and Ejea de los Caballeros). In every sheep farm, data of the factors potentially associated with the likelihood of
C. parvum infection were analysed: geographical location, season, size of herd, number of lambs in the herd at sampling time, lambing period, cleaning of lambing area and presence of diarrhoeic lambs in the farm.
C. parvum oocysts were identified by using the Ziehl–Neelsen technique in 344 lambs (59%) from 75 farms (84.4%). Infected lambs ranged from less than 7 days to 90 days of age, although the percentage of animals shedding oocysts peaked at 8–14 days of age (76.2%). Statistical analysis showed that infection rates were significantly higher in lambs aged between 1 and 21 days (66.4%) than in those aged between 22 and 90 days (23%) (
P |
| doi_str_mv | 10.1016/S0304-4017(01)00639-2 |
| format | Article |
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Cryptosporidium infection in sheep in Zaragoza (northeastern Spain). Faecal samples from 583 lambs aged from 1 day to 3 months and 205 ewes older than 1 year were collected at 89 farms in the two regions of the province of Zaragoza with the highest sheep population (Zaragoza and Ejea de los Caballeros). In every sheep farm, data of the factors potentially associated with the likelihood of
C. parvum infection were analysed: geographical location, season, size of herd, number of lambs in the herd at sampling time, lambing period, cleaning of lambing area and presence of diarrhoeic lambs in the farm.
C. parvum oocysts were identified by using the Ziehl–Neelsen technique in 344 lambs (59%) from 75 farms (84.4%). Infected lambs ranged from less than 7 days to 90 days of age, although the percentage of animals shedding oocysts peaked at 8–14 days of age (76.2%). Statistical analysis showed that infection rates were significantly higher in lambs aged between 1 and 21 days (66.4%) than in those aged between 22 and 90 days (23%) (
P<0.0001,
χ
2). Analysis of correlation between excretion of oocysts and diarrhoea revealed a relationship in all age groups and the probability of presenting diarrhoea was significantly higher for lambs shedding oocysts (86.3%) than for those which did not excrete the parasite (32.2%) (
P<0.0001,
χ
2). Similarly, cryptosporidial infection rates were significantly higher in diarrhoeic (79.4%) than in non-diarrhoeic lambs (22.4%). Furthermore, infection intensity was correlated with the presence of clinical symptoms. Presence of diarrhoeic lambs in the farm was the only factor significantly associated with an increased risk of infection since the percentage of herds testing positive was significantly higher in farms with diarrhoeic lambs (91.3%) than in those without cases of neonatal diarrhoea (12.5%) (
P<0.0001,
χ
2). Factors associated with a decreased risk of
C. parvum infection in lambs included low numbers of lambs in the farm and cleaning of the lambing area. Additionally, lambs 8–14 days of age were less likely to be infected at the first lambing period and in spring/autumn. Cryptosporidial infection was also detected in 16 ewes (7.8%) which excreted few oocysts and without diarrhoea.</description><identifier>ISSN: 0304-4017</identifier><identifier>EISSN: 1873-2550</identifier><identifier>DOI: 10.1016/S0304-4017(01)00639-2</identifier><identifier>PMID: 11836029</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Age Factors ; Animals ; Animals, Newborn ; Cross-Sectional Studies ; Cryptosporidiosis - epidemiology ; Cryptosporidiosis - parasitology ; Cryptosporidiosis - veterinary ; Cryptosporidium parvum ; Cryptosporidium parvum - isolation & purification ; Diarrhea - veterinary ; Epidemiology ; Feces - parasitology ; Female ; Parasite Egg Count - veterinary ; Prevalence ; Risk Factors ; Sheep ; Sheep Diseases - epidemiology ; Sheep Diseases - parasitology ; Sheep-protozoa ; Spain - epidemiology</subject><ispartof>Veterinary parasitology, 2002-04, Vol.104 (4), p.287-298</ispartof><rights>2002 Elsevier Science B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c444t-ca670d5b73ddca9accf869236f2f9a2e900bd30d825adab6d2b1b5383f5958f43</citedby><cites>FETCH-LOGICAL-c444t-ca670d5b73ddca9accf869236f2f9a2e900bd30d825adab6d2b1b5383f5958f43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0304-4017(01)00639-2$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11836029$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Causapé, A.C</creatorcontrib><creatorcontrib>Quı́lez, J</creatorcontrib><creatorcontrib>Sánchez-Acedo, C</creatorcontrib><creatorcontrib>del Cacho, E</creatorcontrib><creatorcontrib>López-Bernad, F</creatorcontrib><title>Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)</title><title>Veterinary parasitology</title><addtitle>Vet Parasitol</addtitle><description>An epidemiologic study was carried out to investigate the prevalence of and to identify factors associated with the risk of
Cryptosporidium infection in sheep in Zaragoza (northeastern Spain). Faecal samples from 583 lambs aged from 1 day to 3 months and 205 ewes older than 1 year were collected at 89 farms in the two regions of the province of Zaragoza with the highest sheep population (Zaragoza and Ejea de los Caballeros). In every sheep farm, data of the factors potentially associated with the likelihood of
C. parvum infection were analysed: geographical location, season, size of herd, number of lambs in the herd at sampling time, lambing period, cleaning of lambing area and presence of diarrhoeic lambs in the farm.
C. parvum oocysts were identified by using the Ziehl–Neelsen technique in 344 lambs (59%) from 75 farms (84.4%). Infected lambs ranged from less than 7 days to 90 days of age, although the percentage of animals shedding oocysts peaked at 8–14 days of age (76.2%). Statistical analysis showed that infection rates were significantly higher in lambs aged between 1 and 21 days (66.4%) than in those aged between 22 and 90 days (23%) (
P<0.0001,
χ
2). Analysis of correlation between excretion of oocysts and diarrhoea revealed a relationship in all age groups and the probability of presenting diarrhoea was significantly higher for lambs shedding oocysts (86.3%) than for those which did not excrete the parasite (32.2%) (
P<0.0001,
χ
2). Similarly, cryptosporidial infection rates were significantly higher in diarrhoeic (79.4%) than in non-diarrhoeic lambs (22.4%). Furthermore, infection intensity was correlated with the presence of clinical symptoms. Presence of diarrhoeic lambs in the farm was the only factor significantly associated with an increased risk of infection since the percentage of herds testing positive was significantly higher in farms with diarrhoeic lambs (91.3%) than in those without cases of neonatal diarrhoea (12.5%) (
P<0.0001,
χ
2). Factors associated with a decreased risk of
C. parvum infection in lambs included low numbers of lambs in the farm and cleaning of the lambing area. Additionally, lambs 8–14 days of age were less likely to be infected at the first lambing period and in spring/autumn. Cryptosporidial infection was also detected in 16 ewes (7.8%) which excreted few oocysts and without diarrhoea.</description><subject>Age Factors</subject><subject>Animals</subject><subject>Animals, Newborn</subject><subject>Cross-Sectional Studies</subject><subject>Cryptosporidiosis - epidemiology</subject><subject>Cryptosporidiosis - parasitology</subject><subject>Cryptosporidiosis - veterinary</subject><subject>Cryptosporidium parvum</subject><subject>Cryptosporidium parvum - isolation & purification</subject><subject>Diarrhea - veterinary</subject><subject>Epidemiology</subject><subject>Feces - parasitology</subject><subject>Female</subject><subject>Parasite Egg Count - veterinary</subject><subject>Prevalence</subject><subject>Risk Factors</subject><subject>Sheep</subject><subject>Sheep Diseases - epidemiology</subject><subject>Sheep Diseases - parasitology</subject><subject>Sheep-protozoa</subject><subject>Spain - epidemiology</subject><issn>0304-4017</issn><issn>1873-2550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1rFEEQhhtRzCb6E5Q-SXIYrf6cmZPIolEIRIhevDQ1_aGtM9Nj9-zC5uRPdza7JMcciqrDU1XwPoS8YvCWAdPvbkCArCSw-hzYBYAWbcWfkBVralFxpeApWd0jJ-S0lN8AIEHXz8kJY43QwNsV-fc1-y32frSe4uiWwn5XYqEp0CnNfpwj9jTH8ocGtHPKhYaU6TrvpjmVKeXo4magE-bt0uIYvJ1jGpeJ9jh0ZT_8wIw_0y3S8zHl-ZfHMvs80psJ43jxgjwL2Bf_8tjPyPdPH7-tP1dX15df1h-uKiulnCuLuganulo4Z7FFa0OjWy504KFF7luAzglwDVfosNOOd6xTohFBtaoJUpyRN4e7U05_N77MZojF-r7H0adNMTWTCjirHwVZI2uuW7WA6gDanErJPpgpxwHzzjAwe0fmzpHZCzDAzJ0jw5e918cHm27w7mHrKGUB3h8Av-SxjT6bYuPekIt5ide4FB958R_jJ6Or</recordid><startdate>20020402</startdate><enddate>20020402</enddate><creator>Causapé, A.C</creator><creator>Quı́lez, J</creator><creator>Sánchez-Acedo, C</creator><creator>del Cacho, E</creator><creator>López-Bernad, F</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>M7N</scope><scope>7X8</scope></search><sort><creationdate>20020402</creationdate><title>Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)</title><author>Causapé, A.C ; Quı́lez, J ; Sánchez-Acedo, C ; del Cacho, E ; López-Bernad, F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c444t-ca670d5b73ddca9accf869236f2f9a2e900bd30d825adab6d2b1b5383f5958f43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Age Factors</topic><topic>Animals</topic><topic>Animals, Newborn</topic><topic>Cross-Sectional Studies</topic><topic>Cryptosporidiosis - epidemiology</topic><topic>Cryptosporidiosis - parasitology</topic><topic>Cryptosporidiosis - veterinary</topic><topic>Cryptosporidium parvum</topic><topic>Cryptosporidium parvum - isolation & purification</topic><topic>Diarrhea - veterinary</topic><topic>Epidemiology</topic><topic>Feces - parasitology</topic><topic>Female</topic><topic>Parasite Egg Count - veterinary</topic><topic>Prevalence</topic><topic>Risk Factors</topic><topic>Sheep</topic><topic>Sheep Diseases - epidemiology</topic><topic>Sheep Diseases - parasitology</topic><topic>Sheep-protozoa</topic><topic>Spain - epidemiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Causapé, A.C</creatorcontrib><creatorcontrib>Quı́lez, J</creatorcontrib><creatorcontrib>Sánchez-Acedo, C</creatorcontrib><creatorcontrib>del Cacho, E</creatorcontrib><creatorcontrib>López-Bernad, F</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>MEDLINE - Academic</collection><jtitle>Veterinary parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Causapé, A.C</au><au>Quı́lez, J</au><au>Sánchez-Acedo, C</au><au>del Cacho, E</au><au>López-Bernad, F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain)</atitle><jtitle>Veterinary parasitology</jtitle><addtitle>Vet Parasitol</addtitle><date>2002-04-02</date><risdate>2002</risdate><volume>104</volume><issue>4</issue><spage>287</spage><epage>298</epage><pages>287-298</pages><issn>0304-4017</issn><eissn>1873-2550</eissn><abstract>An epidemiologic study was carried out to investigate the prevalence of and to identify factors associated with the risk of
Cryptosporidium infection in sheep in Zaragoza (northeastern Spain). Faecal samples from 583 lambs aged from 1 day to 3 months and 205 ewes older than 1 year were collected at 89 farms in the two regions of the province of Zaragoza with the highest sheep population (Zaragoza and Ejea de los Caballeros). In every sheep farm, data of the factors potentially associated with the likelihood of
C. parvum infection were analysed: geographical location, season, size of herd, number of lambs in the herd at sampling time, lambing period, cleaning of lambing area and presence of diarrhoeic lambs in the farm.
C. parvum oocysts were identified by using the Ziehl–Neelsen technique in 344 lambs (59%) from 75 farms (84.4%). Infected lambs ranged from less than 7 days to 90 days of age, although the percentage of animals shedding oocysts peaked at 8–14 days of age (76.2%). Statistical analysis showed that infection rates were significantly higher in lambs aged between 1 and 21 days (66.4%) than in those aged between 22 and 90 days (23%) (
P<0.0001,
χ
2). Analysis of correlation between excretion of oocysts and diarrhoea revealed a relationship in all age groups and the probability of presenting diarrhoea was significantly higher for lambs shedding oocysts (86.3%) than for those which did not excrete the parasite (32.2%) (
P<0.0001,
χ
2). Similarly, cryptosporidial infection rates were significantly higher in diarrhoeic (79.4%) than in non-diarrhoeic lambs (22.4%). Furthermore, infection intensity was correlated with the presence of clinical symptoms. Presence of diarrhoeic lambs in the farm was the only factor significantly associated with an increased risk of infection since the percentage of herds testing positive was significantly higher in farms with diarrhoeic lambs (91.3%) than in those without cases of neonatal diarrhoea (12.5%) (
P<0.0001,
χ
2). Factors associated with a decreased risk of
C. parvum infection in lambs included low numbers of lambs in the farm and cleaning of the lambing area. Additionally, lambs 8–14 days of age were less likely to be infected at the first lambing period and in spring/autumn. Cryptosporidial infection was also detected in 16 ewes (7.8%) which excreted few oocysts and without diarrhoea.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>11836029</pmid><doi>10.1016/S0304-4017(01)00639-2</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0304-4017 |
| ispartof | Veterinary parasitology, 2002-04, Vol.104 (4), p.287-298 |
| issn | 0304-4017 1873-2550 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Age Factors Animals Animals, Newborn Cross-Sectional Studies Cryptosporidiosis - epidemiology Cryptosporidiosis - parasitology Cryptosporidiosis - veterinary Cryptosporidium parvum Cryptosporidium parvum - isolation & purification Diarrhea - veterinary Epidemiology Feces - parasitology Female Parasite Egg Count - veterinary Prevalence Risk Factors Sheep Sheep Diseases - epidemiology Sheep Diseases - parasitology Sheep-protozoa Spain - epidemiology |
| title | Prevalence and analysis of potential risk factors for Cryptosporidium parvum infection in lambs in Zaragoza (northeastern Spain) |
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