Co-circulation of dengue virus serotypes 1 and 3 in the Fatick region of senegal 2018

On 10 th September 2018, the Syndromic Sentinel Surveillance network that monitors febrile illnesses in all 14 regions of Senegal detected a peak fever Fatick region. 13 samples were sent to WHO Collaborating Centre for Arboviruses and Viral Haemorrhagic Fevers at Institut Pasteur de Dakar (IPD). Laboratory investigations revealed an epidemic dengue 1 genotype V 3 III. neighbors Holy City Touba where 3.5 million people from over word gather every year Grand Magal pilgrimage. This article discusses impact mass gatherings their role recent introduction serotypes Senegal. Dengue is now endemic across many countries Africa, highlighting need early detection, control measures prevention severe cases highly connected urban settings.