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Titolo:
Contamination of river water by Cryptosporidium parvum oocysts in western Japan
Autore:
Ono, K; Tsuji, H; Rai, SK; Yamamoto, A; Masuda, K; Endo, T; Hotta, H; Kawamura, T; Uga, S;
Indirizzi:
Hyogo Prefectural Inst Publ Hlth, Div Microbiol, Hyogo Ku, Kobe, Hyogo 6520032, Japan Hyogo Prefectural Inst Publ Hlth Kobe Hyogo Japan 6520032 6520032, Japan Kobe Univ, Sch Med, Dept Med Zool, Kobe, Hyogo 650, Japan Kobe Univ Kobe Hyogo Japan 650 Med, Dept Med Zool, Kobe, Hyogo 650, Japan Kobe Univ, Sch Med, Dept Microbiol, Kobe, Hyogo 650, Japan Kobe Univ KobeHyogo Japan 650 ed, Dept Microbiol, Kobe, Hyogo 650, Japan Kobe Univ, Sch Med, Fac Hlth Sci, Kobe, Hyogo 650, Japan Kobe Univ Kobe Hyogo Japan 650 Med, Fac Hlth Sci, Kobe, Hyogo 650, Japan Natl Inst Infect Dis, Tokyo, Japan Natl Inst Infect Dis Tokyo JapanNatl Inst Infect Dis, Tokyo, Japan
Titolo Testata:
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
fascicolo: 9, volume: 67, anno: 2001,
pagine: 3832 - 3836
SICI:
0099-2240(200109)67:9<3832:CORWBC>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
GIARDIA CYSTS; IMMUNOMAGNETIC SEPARATION; RISK-FACTORS; PREVALENCE; SUPPLIES; TRANSMISSION; POPULATIONS; SAMPLES; HOSTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Ono, K Hyogo Prefectural Inst Publ Hlth, Div Microbiol, Hyogo Ku, 2-1-29 Arata Cho, Kobe, Hyogo 6520032, Japan Hyogo Prefectural Inst Publ Hlth 2-1-29 Arata Cho Kobe Hyogo Japan 6520032
Citazione:
K. Ono et al., "Contamination of river water by Cryptosporidium parvum oocysts in western Japan", APPL ENVIR, 67(9), 2001, pp. 3832-3836

Abstract

In Japan, only a few rivers have been inspected for Cryptosporidium parvumcontamination, and the methods used had low sensitivity. In 1998 and 1999,we used a method with higher sensitivity to examine all large rivers used as sources of water supply in one prefecture (which we divided into four areas) in western Japan for Cryptosporidium oocysts. One sample was collectedat each of 156 sites along 18 rivers, and samples were tested for Cryptosporidium oocysts by immunomagnetic separation. Samples were classified as being obtained on an island with livestock and fishing industries, a densely populated urban area, a western region including farming villages, or a still more rural northern area with agriculture and fishing. Restriction fragment length polymorphism analysis was used for identification of the C parvum found as the bovine or human type. C parvum was detected in at least one sample from 13 of the 18 rivers and in 47% (74 of 156) of the samples. One-third to all of the samples from each area contained C parvum oocysts. The number of C pari,um oocysts per 20 liters of river water varied in the samepattern as the number of cattle kept in the four kinds of areas (as determined by the Mantel extension test). Oocysts isolated were of the bovine type; the C. parvum detected in rivers probably came from cattle kept in that valley. As we had expected, when tested with a more sensitive method, riverwater in western Japan was found to be greatly contaminated with C parvum oocysts, as reported in other countries.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 11:58:21