Am J Trop Med Hyg 2014 Mar 27;90(3):449-56. Epub 2014 Jan 27.
Virology Department, United States Naval Medical Research Unit No. 6, Lima and Iquitos, Peru; Dirección Regional de Salud de Piura, Ministerio de Salud, Piura, Peru; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.