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Epidemiologic Investigations into Outbreaks of Rift Valley Fever in Humans, South Africa, 2008–2011
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Dec 2013
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Source: Emerg Infect Dis. 19(12):1918-1925.
[PDF-528.13 KB]
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Alternative Title:Emerg Infect Dis
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Description:Rift Valley fever (RVF) is an emerging zoonosis posing a public health threat to humans in Africa. During sporadic RVF outbreaks in 2008-2009 and widespread epidemics in 2010-2011, 302 laboratory-confirmed human infections, including 25 deaths (case-fatality rate, 8%) were identified. Incidence peaked in late summer to early autumn each year, which coincided with incidence rate patterns in livestock. Most case-patients were adults (median age 43 years), men (262; 87%), who worked in farming, animal health or meat-related industries (83%). Most case-patients reported direct contact with animal tissues, blood, or other body fluids before onset of illness (89%); mosquitoes likely played a limited role in transmission of disease to humans. Close partnership with animal health and agriculture sectors allowed early recognition of human cases and appropriate preventive health messaging.
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Volume:19
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Issue:12
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