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A total of 859 suspected cases of Lassa fever have been reported from 21 states as at 27th April 2012 with 139 laboratory confirmed and 88 deaths.
(Via Federal Ministry of Health - accessed 04/05/12)
Advice for Travellers
Lassa fever is a low risk for most travellers unless living in poor sanitary conditions with overcrowding in rural areas where the host is usually found. Lassa fever is a zoonotic viral disease transmitted via the excreta of an infected Mastomys rat. Healthcare workers are at risk if good infection control and barrier nursing methods are not maintained.
Travellers returning from affected areas who develop symptoms of fever, malaise, headache, sore throat, muscle pain, chest pain, nausea, vomiting, diarrhoea, and abdominal pain should seek medical advice.