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Titolo:
Cattle-to-cattle transmission of Mycobacterium bovis
Autore:
Goodchild, AV; Clifton-Hadley, RS;
Indirizzi:
Vet Labs Agcy Weybridge, Dept Epidemiol, Weybridge KT15 3NB, Surrey, England Vet Labs Agcy Weybridge Weybridge Surrey England KT15 3NB Surrey, England
Titolo Testata:
TUBERCULOSIS
fascicolo: 1-2, volume: 81, anno: 2001,
pagine: 23 - 41
SICI:
1472-9792(2001)81:1-2<23:CTOMB>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
REPUBLIC-OF-IRELAND; EXPERIMENTALLY INFECTED CATTLE; TUBERCULIN-REACTING CATTLE; INTERFERON-GAMMA ASSAY; RISK-FACTORS; RESPIRATORY TRACTS; HERD BREAKDOWNS; SKIN-TEST; LESIONS; EXCRETION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
76
Recensione:
Indirizzi per estratti:
Indirizzo: Goodchild, AV Vet Labs Agcy Weybridge, Dept Epidemiol, Woodham Lane, Weybridge KT15 3NB,Surrey, England Vet Labs Agcy Weybridge Woodham Lane Weybridge Surrey England KT15 3NB
Citazione:
A.V. Goodchild e R.S. Clifton-Hadley, "Cattle-to-cattle transmission of Mycobacterium bovis", TUBERCULOSI, 81(1-2), 2001, pp. 23-41

Abstract

This review, illustrated with data on the characteristics of herds infected with Mycobacterium bovis (TB) in Great Britain (GB), attempts to identifythe role of cattle-to-cattle transmission (CCT) of TB. CCT plays a part inthe entry of infection into herds, through purchased infected animals or contiguous spread, although CCT can have a relatively small role in comparison with an established wildlife source. Experimental studies have shown that it is possible for CCT to occur within herds. In 1999, more than one reactor was found in over two-thirds of confirmed TB incidents in Great Britain. The details of transmission from an infectious animal to a susceptible animal are described: proximate, which depends on factors such as closeness of contact and ventilation, or indirect, which also depends on survival outside the host. Herd size is a risk factor for the incidence of TB, both in herds and in individual cattle. Control of TB is considered in relation to the skin test: failure of the test to remove all infected animals from incidents is possible, but probably of less significance than failure to preventreinfection from sources external to the herd. It is concluded that CCT may have significance in determining the total number of reactors. Safeguarding herds from other sources of TB is likely to reduce CCT as a side effect. (C) 2001 Harcourt Publishers Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 09:24:38