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14th ICID - Poster Abstracts - International Society for Infectious ...

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When citing these abstracts please use the following reference:<br />

Author(s) of abstract. Title of abstract [abstract]. Int J Infect Dis 2010;14S1: Abstract number.<br />

Please note that the official publication of the <strong>International</strong> Journal of <strong>Infectious</strong> Diseases 2010, Volume 14, Supplement 1<br />

is available electronically on http://www.sciencedirect.com<br />

Final Abstract Number: 84.046<br />

Session: Virology and Viral Infections (Non-HIV)<br />

Date: Friday, March 12, 2010<br />

Time: 12:30-13:30<br />

Room: <strong>Poster</strong> & Exhibition Area/Ground Level<br />

Type: <strong>Poster</strong> Presentation<br />

Spatial and temporal trends of the Lassa fever epidemic in Nigeria 2001 – 2009, with particular<br />

reference to the Edo State experience<br />

G. Akpede 1 , D. Asogun 1 , P. Okokhere 1 , S. Okogbenin 1 , H. Akpan H. 2 , J. Ehiemuan 1 , C. Happi 3 ,<br />

S. Gunther 4<br />

1 Irrua Specialist Teaching Hospital, Irrua, Edo, Nigeria, 2 Federal Ministry of Health, Abuja,<br />

Nigeria, 3 UCH Ibadan, Ibadan, Nigeria, 4 Bernhard-Nocht-Institute <strong>for</strong> Tropical Medicine,<br />

Hamburg, Germany<br />

Background: The initial interest following the report of the Lassa fever (LF) epidemic in Nigeria in<br />

1969 waned considerably unlike in the Mano River Basin countries of Sierra Leone, Liberia and<br />

Guinea. The NLFSFN was <strong>for</strong>med in 2007 to meet the need <strong>for</strong> a structured and sustained<br />

response to the control of the epidemic in Nigeria. We describe the spread of the epidemic from<br />

2001-2007, the change in its seasonality, the rise in prevalence and the decline in case fatality<br />

rate (CFR) among hospital patients.<br />

Methods: Review of surveillance data at the Federal Ministry of Health and the Institute of Lassa<br />

Fever Research and Control, ISTH, Irrua and review of the case load and outcome of suspected<br />

LF at the ISTH. The diagnosis of LF was based on defined criteria.<br />

Results: From 2001 – 2006, 1-3 (average 1.7 or 5%) of the 36 States and the Federal Capital<br />

Territory reported LF compared to 7-12 (average 9.7) States in 2007-2009 (OR (95% CI) = 0.26<br />

(0.13, 0.53), p

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