Occurrence of Cryptosporidium oocysts and Giardia cysts in raw waters in Norway.
AIMS: This paper reports the first investigation into the occurrence of Cryptosporidium and Giardia in Norwegian raw water sources. METHODS: Between June 1998 and October 1999, 408 raw water samples, collected from 147 different sites across Norway, were analysed for these parasites. Analysis was ba...
| Publicado en: | Scandinavian Journal of Public Health Vol. 29; no. 3; pp. 200 - 208 |
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| Autores principales: | , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Sage Publications Inc.
Sep2001
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106922246&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106922246 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14034948 BDD jtl: Scandinavian Journal of Public Health issn: 14034948 maglogo: Y pubinfo: dt: Sep2001 vid: 29 iid: 3 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 106922246 106922246 2002053258 10.1177/14034948010290030901 NLM11680772 106922246 ppf: 200 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Occurrence of Cryptosporidium oocysts and Giardia cysts in raw waters in Norway. aug: au: Robertson LJ Gjerde B affil: Section of Parasitology, Dept of Pharmacology, Microbiology and Food Hygiene, Norwegian School of Veterinary Science, Oslo, Norway sug: subj: Water Microbiology Analysis Cryptosporidium Analysis Giardia Lamblia Analysis Microbial Contamination Epidemiological Research Surveys Prevalence Descriptive Statistics Microbiological Techniques Relative Risk Chi Square Test Confidence Intervals T-Tests Mann-Whitney U Test Norway Environmental Monitoring Public Health Water Supply Funding Source Human ab: AIMS: This paper reports the first investigation into the occurrence of Cryptosporidium and Giardia in Norwegian raw water sources. METHODS: Between June 1998 and October 1999, 408 raw water samples, collected from 147 different sites across Norway, were analysed for these parasites. Analysis was based upon US EPA Method 1623. RESULTS: In 305 samples (75%), parasites were not detected. In 55 samples (13.5%), Cryptosporidium only was detected. In 38 samples (9%), Giardia only was detected. In 10 samples (2.5%) both Cryptosporidium and Giardia were detected. Of the sites sampled, parasites were not detected at 100 (68%) of them, Cryptosporidium only was detected at 20 (13.5%). Giardia only was detected at 11 (7.5%), and both Cryptosporidium and Giardia were detected at 16 (11%). Concentrations of parasites were low; usually one cyst/oocyst detected per 10 litres of water. CONCLUSIONS: Significant associations were demonstrated for these samples between the detection of these parasites and (a) turbidity > or =2.0 NTU, and (b) high numbers of domestic animals within the catchment area. No association between seasonality and the occurrence of these parasites could be detected. The results are discussed in relation to other studies and the potential public health implications for Norway. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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