Systematic review of brucellosis in the Middle East: disease frequency in ruminants and humans and risk factors for human infection

Epidemiology and Infection - Tập 144 Số 4 - Trang 671-685 - 2016
Imadidden Musallam1, Mahmoud N. Abo‐Shehada2, Yamen Hegazy3, Hannah R. Holt1, Javier Guitián1
1Veterinary Epidemiology,Economics and Public Health Group,Department of Production and Population Health,The Royal Veterinary College,University of London,Hatfield,UK.
2Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, Keppel Street, London, UK
3Department of Animal Medicine, Faculty of Veterinary Medicine, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt

Tóm tắt

SUMMARYA systematic review of studies providing frequency estimates of brucellosis in humans and ruminants and risk factors forBrucellaspp. seropositivity in humans in the Middle East was conducted to collate current knowledge of brucellosis in this region. Eight databases were searched for peer-reviewed original Arabic, English, French and Persian journal articles; the search was conducted on June 2014. Two reviewers evaluated articles for inclusion based on pre-defined criteria. Of 451 research articles, only 87 articles passed the screening process and provided bacteriological and serological evidence for brucellosis in all Middle Eastern countries.Brucella melitensisandB. abortushave been identified in most countries in the Middle East, supporting the notion of widespread presence ofBrucellaspp. especiallyB. melitensisacross the region. Of the 87 articles, 49 were used to provide evidence of the presence ofBrucellaspp. but only 11 provided new knowledge on the frequency of brucellosis in humans and ruminants or on human risk factors for seropositivity and were deemed of sufficient quality. Small ruminant populations in the region show seroprevalence values that are among the highest worldwide. Human cases are likely to arise from subpopulations occupationally exposed to ruminants or from the consumption of unpasteurized dairy products. The Middle East is in need of well-designed observational studies that could generate reliable frequency estimates needed to assess the burden of disease and to inform disease control policies.

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