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Lassa Fever in Nigeria (Update)

16 July 2012

As of 6 July 2012, a total of 933 suspected cases of Lassa fever have been reported from 41 local government agencies in 23 states. Of those 147 cases have been laboratory confirmed and 93 associated deaths have been recorded. No suspected cases of Lassa fever were identified countrywide during epidemiological week 26 (2012).

Adequate supplies of Ribavirin (for treatment) and personal protective equipment are available in all affected states.

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.