WHO has published Yellow fever – Democratic Republic of the Congo. Excerpt:
On 22 March 2016, the National IHR Focal Point of the Democratic Republic of Congo (DRC) notified WHO of cases of Yellow Fever (YF) in connection with the outbreak currently occurring in Angola (see DON posted 13 April 2016).
From early January to 22 March, a total of 453 suspect cases of YF, including 45 deaths were reported by the national surveillance system.
Further investigations identified 41 cases potentially related to the Angola outbreak. These cases were confirmed by laboratory testing at the Institute National of Biomedical Research (INRB) in Kinshasa. Of these 41 cases, 16 have also been confirmed by the regional reference laboratory, Pasteur Institute (IP) in Dakar: 13 of the cases were detected in Kongo Central province (formerly Bas-Congo) and 3 cases reported from Kinshasa. Kongo Central province shares a long, porous border with Angola.
Laboratory testing for the other 25 probable cases is pending at IP Dakar. Of these pending cases, two are identified as probable cases of autochthonous transmission – one from Kinshasa, and one from Matadi (in Kongo Central province). Investigations are ongoing and complementary testing at IP Dakar is pending.
An investigation team with the support of a virologist from IP Cameroon conducted an outbreak investigation from 7-18 April to assess the presence of local transmission and the risk of amplification. The conducted entomological survey found a high density of Aedes aegypti mosquito larvae, samples of which have also been sent to IP Dakar for infectivity investigation. High entomological density indicates that the risk for amplification of disease is very high.
The Government officially declared an outbreak of Yellow Fever on 23 April 2016.