Outbreak update – Cholera in Somalia, 14 February 2021

News and Press Release
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1 March 2021 – The Ministry of Health of Somalia has announced 104 new suspected cases of cholera, with no reported death, for epidemiological week 7 (8 to 14 February 2021). The total cumulative number of suspected cholera cases in 2021 is 565, including 2 associated deaths with a case fatality ratio (CFR) of 0.4%. All of the cases were reported from 17 flood affected districts of Banadir region and Baidoa district Bay region. No cholera cases were reported from other regions

Of the 565 cases reported since the week 1, 219 (39%) are aged ≤2 years. Of the 2 deaths registered, 1 (50%) is aged ≤2 years.

The current cholera outbreak started in December 2017 following floods that affected districts in the basins of Jubba and Shabelle rivers. It was contained in five of the six regions while active transmission has continued to be reported from Banadir. Flash floods caused by heavy Gu rains in April 2020 led to the contamination of water sources that led to an increase in the number of cholera cases. In 2021, a cumulative attack rate of 20 persons per 100 000 population was reported. The highest attack rate was reporting from the districts of Danyile (99 per 100 000 population), Madina (59 per 100,000 population), and Dharkenly (37 per 100,000 population ). The majority of deaths were reported from Banadir. The overall CFR was 0.4 %.

Of the 165 stool samples tested since January 2021, a total of 46 samples came out positive for Vibrio cholerae (27%). Serotype V. Cholerae Ogawa was isolated from stool samples collected from Banadir. This strain is sensitive to Tetracycline, Chloramphenicol and Ciprofloxacin.

The overall reduction in the number of new cholera cases as compared to the numbers at the beginning of the outbreak is attributed to improved implementation of preventive interventions including oral cholera vaccination (OCV) campaigns and the strengthening of water, sanitation and hygiene (WaSH) activities in hot spots. However, the current floods and cholera outbreak occurred at a time when COVID-19 cases are increasing in all regions of Somalia, stretching the already limited capacity to respond to the cholera alerts.

WHO continues to provide leadership and support to health authorities and partners in implementing activities that can mitigate the outbreak. Disease surveillance is being managed with the support of WHO through an electronic system known as the Early Warning Alert and Response Network (EWARN) and is currently being expanded to all health facilities across the country. WHO and the Ministry of Health continue to monitor outbreak trends through EWARN and promptly investigate and respond to all alerts.