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Mpox and Oropouche outbreaks

Multi-country outbreaks of mpox clade I and Oropouche are ongoing. Keep up to date with these links if you are travelling to affected areas.

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26 January 2026

Marburg virus disease in Ethiopia

On 26 January 2026, the Ethiopian government and WHO officially declared the end of the Marburg virus disease outbreak. This is following completion of enhanced surveillance and the mandatory follow-up period, with no new confirmed cases reported for consecutive 42 days. The outbreak began on 14 November 2025 and affected four district: Jinka, Malle, and Arba Minch in the South Ethiopia Region and Hawassa in the Sidama Region. A total of 14 confirmed cases, including nine deaths, were recorded.

Take usual precautions
26 January 2026

Mpox in Madagascar

Between 17 December 2025 and 25 January 2026, Madagascar reported 495 mpox cases (182 confirmed) across 20 regions. Boeny region has been most affected. Clade Ib has been detected in the country. Please see our Topics in Brief article for further details on mpox.

Take extra precautions
22 January 2026

Yellow fever in Colombia

Between 2024 and 21 January 2026, a total of 157 confirmed yellow fever cases, including 70 deaths, were reported in Colombia. The departments of Caldas, Caquetá, Cauca, Guaviare, Huila, Meta, Nariño, Putumayo, Tolima and Vaupes have all reported fatal cases. Tolima department remains the most affected with 137 cases (55 deaths). Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
21 January 2026

Dengue in Nigeria

Health authorities in Nigeria state that a total of 735 (219 confirmed) dengue cases, with two deaths, were reported between January and November 2025. Most cases were reported in Edo (537 cases) and Sokoto (96 cases) states. Please see our Topics in Brief article for more details on dengue.

Take usual precautions
20 January 2026
Malawi + Balaka
Blantyre
Neno

Cholera in Malawi

As of 17 January 2026, there have been 280 suspected cases including 31 confirmed cases across nine districts. The majority (eight cases) have been in Blantyre, followed by Neno and Balaka with one case each. See our Topics in Brief article for further details on cholera.

Take usual precautions

Marburg virus disease in South Sudan ex Ethiopia

As of 12 January 2026, a total of three suspected Marburg virus disease cases have been reported in South Sudan. Two of these suspected cases travelled to Marburg virus disease affected areas in Ethiopia in November 2025 and one suspected case is believed to be possible community spread. Please see our Topics in Brief article for more details on Marburg virus disease.

Take extra precautions
14 January 2026
India + West Bengal

Nipah virus in India

On 13 January 2026, two cases of Nipah virus were confirmed. Both cases are receiving hospital treatment. These cases are the first in West Bengal in 19 years. This is the 9th Nipah virus outbreak in India since the first outbreak in 2001. Between 2018 and 2025 outbreaks have been reported almost annually in Kerala. Please see our Topics in Brief article for further details on Nipah virus.

Take usual precautions

Mpox in Mexico ex Germany

On 9 January 2026, the World Health Organization reported a clade Ib mpox case in Mexico. The case is an adult male with a travel history to Germany. This is the first clade Ib mpox case reported in Mexico. Please see our Topics in Brief article for further details on mpox.

Take extra precautions
13 January 2026

Cholera in Mozambique

In 2025, a total of 5,787 confirmed cholera cases and 68 deaths have been reported from eight out of ten provinces in Mozambique. In the past four weeks, a 70 percent increase in cholera cases has been reported. Please see our Topics in Brief article for further details on cholera.

Take usual precautions
12 January 2026

Cholera in Somalia

Between 1 January and 24 December 2025, a total of 8,763 cases of cholera (nine deaths) have been reported in Somalia. Please see our Topics in Brief article for further details on cholera.

Take usual precautions
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