Burkina Faso has been experiencing an epidemic of dengue fever since week 31 of 2017 (week ending on 6 August). WHO officially declared the outbreak on 28 September 2017. Unlike the previous occurrence in 2016, several serotypes of dengue have been detected and the number of cases quickly exceeded past seasonal outbreaks.
As of 27 October 2017, a total of 6 699 (suspected, probable or confirmed) cases and 13 deaths (CFR= 0.2%) were reported throughout the country. Of the total cases reported, 4 428 (66%) were probable, with a positive result for dengue by rapid diagnostic test (RDT), of 241 samples referred for PCR testing at the Viral Haemorrhagic fever (VHF) reference lab of the Centre Muraz, Bobo-Dioulasso, 141 (59%) were confirmed cases by positive result. Further characterization of 72 samples has identified three dengue virus serotypes: DENV-2 (N=58), DENV-3 (N=12) and DENV-1 (N=2). Cases are currently reported in 12 of the country’s 13 health regions, with 64% of cases reported in the central region, particularly in the city of Ouagadougou.