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Cholera Outbreaks in Central and West Africa : 2016 Regional Update - Week 12

Highlights at the end of March 2016:

With 6,030 cases affecting 3 countries (Nigeria, Benin and DRC) in the West and Cen-tral Africa region, the current epidemic situation is slightly calmer than in previous years. However, this rather favorable situation should be taken with great caution given the significant challenges observed in surveillance, early detection and early response to cholera alerts in the region.

Benin: Since W2, 79 cases, 0 death have been reported. In W12, a new area notified cases: Zè commune, with two (2) cases reported from people aged 5 and above. Laboratory samples analyses confirmed Vibrio cholerae. Besides, outbreaks are still ongoing in Aguégués commune with 59 cases – 0 death incl. 17 under 5 children and in Sô-Ava commune, 15 cases incl. 11 under 5 children.

Nigeria As per end of March, Jigawa and Kano states continue to notify cholera suspected cases, with respectively 19 cumulative cases – 0 deaths over the past 3 weeks and 69 cumulative cases and 0 deaths (since the onset of the epidem-ic in Kano in W8). Information on cholera control in the affected area remain limited.

Democratic Republic of Congo: With a total of 5,757 cases and 94 deaths (CFR = 1.6%) since the beginning of 2016, DRC has an incidence significantly highe r than in the previous year. Based on data from 2009, this incidence is even above median value at the same time (median=5,175 cases—data 2009-2015).

Focus on priority areas:


  • Province Tshopo: Partial data over the last 2 weeks (W11 and 12); Incidence remains very high (largely above the average incidence over the last 5 years). In addition, the case fatality ratio is extremely high, above emergency threshold with 6.5% (total from W1). Analysing CFR per health area, Yakusu (average of 30% from the onset W7 to W12), Yahuma (18% from the onset W8 to W10), and Basoko (8% from the onset W7 to W10) should alert actors to take immedi-ate corrective actions regarding the insufficient case management and prevention to stop its propagation.
  • Province Haut-Lomami: the incidence this year remains largely higher in comparison to the average incidence (data 2009-2015). Areas with a high transmission are Bukama (27 cases—0 death), Kabondo-Dianda (25 cases-0 death), and in Butuma (12 cases-0 death) and Malemba– Nkulu (5 cases, 1 death) , a sudden increase in the number of cases arises over the past weeks.
  • The Haut Katanga province is increasing again after the progressive decrease from W2 to W6. Kampemba and Kambove health areas are in outbreak (two-fold increase over the past 2 weeks). Besides high CFR in Likasi and Kikula are observed, respectively an average of 9% and 4% since the beginning of the onset.
  • Provinces of South and North Kivu: the current incidence remains at the level of the average incidence (data 2009-2015). In North Kivu, areas with high transmission are Rutshuru, Goma and Kirotshe respectively 32, 16 and 15 cases in W12. In the South Kivu, Uvira health area is currently in outbreak with a three-fold increase of the number of cases from W10 to W11. Epi data for W12 are not yet communicated for the South Kivu province. CFR remains moderate (below the emergency threshold of 1%) over these 2 provinces.
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