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Volume 16, Number 7—July 2010
Dispatch

Detection of Lassa Virus, Mali

David Safronetz, Job E. Lopez, Nafomon Sogoba, Sékou F. Traore’, Sandra J. Raffel, Elizabeth R. Fischer, Hideki Ebihara, Luis M. Branco, Robert F. Garry, Tom G. Schwan, and Heinz FeldmannComments to Author 
Author affiliations: National Institutes of Health, Hamilton, Montana, USA (D. Safronetz, J.E. Lopez, S.J. Raffel, E.R. Fischer, H. Ebihara, T.G. Schwan, H. Feldmann); University of Bamako, Bamako, Mali (N. Sogoba, S.F. Traore’); Tulane School of Medicine, New Orleans, Louisiana, USA (L. Branco, R.F. Garry); Autoimmune Technologies LLC, New Orleans (L. Branco)

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Table

Results of investigation of small mammals trapped in 3 villages in Mali, 2009

Village No. total captures (trap success, %)* No. non–Mastomys spp. captures No. Mastomys spp. captures (trap success, %) No. (%) Lassa-positive M. natalensis mice
N’Tessoni 25 (14.9) 8† 17 (10.1)‡ 0
Soromba 25 (15.0) 0 25 (15.0) 6 (24)
Doneguebougou 53 (21.1) 13† 40 (15.9)‡ 0

*Trap success is defined as the total number of individual rodents captured divided by the cumulative total of traps set at each location, multiplied by 100.
†Non-Mastomys species captured included 1 Praomys daltoni (Dalton’s mouse), 3 Mus musculoides (Temminck’s mouse), 3 Crocidura olivieri (giant shrew), and 1 Arvicanthis niloticus (grass rat) from N’Tessoni and 1 Praomys daltoni, 1 Rattus rattus rat, 1 Arvicanthis niloticus, 3 Crocidura viaria (savannah path shrew), and 7 Crocidura olivieri from Doneguebougou.
‡ Two Mastomys spp. rodents captured in N’Tessoni and Doneguebougou were identified as M. erythroleucus by cytochrome B sequencing.

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