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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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Check the recommendations for your destination

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05 March 2026
Argentina + Salta

Chikungunya in Argentina

As of 2 March 2025, 200 suspected cases of chikungunya (13 confirmed) have been reported in Salta province since the start of 2026. Six of the confirmed cases reported no history of travel indicating local transmission is occurring. Please see our Topics in Brief article for further details on chikungunya.

Take usual precautions
05 March 2026

Lassa fever in Nigeria

As of 22 February 2026, a total of 1,989 suspected Lassa fever cases (404 confirmed, 43 deaths) have been reported since the start of 2026. Confirmed cases have been reported in 18 states, with 84% of confirmed cases reported from Ondo, Bauchi, Edo and Taraba. Please see our Topics in Brief article for further details on Lassa fever.

Take usual precautions
05 March 2026

Yellow fever in Venezuela

As of 25 February 2026, a total of 36 confirmed yellow fever cases have been reported in Venezuela since this outbreak began in June 2025. These cases were in 42 municipalities across 14 states. 61% of cases have been reported in Apure, Táchira, Lara, Mérida, Barinas, Portuguesa, Cojedes and Guárico. Cases have been noted in parts of Lara and Aragua states where yellow fever vaccination is not usually recommended. Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
04 March 2026

Chikungunya in Mayotte

As of 27 February 2026, 219 cases of chikungunya have been reported in Mayotte since the start of the year. Please see our Topics in Brief article for further details on chikungunya.

Take usual precautions
04 March 2026

Dengue in Timor-Leste

Between 1 and 28 February 2026, 2,105 cases of dengue were reported from Timor-Leste. Please see our Topics in Brief article for further details on dengue.

Take usual precautions
02 March 2026

Chikungunya in Seychelles

As of 27 February 2026, over 70 chikungunya cases were reported in European travellers returning from the Seychelles since November 2025. Please see our Topics in Brief article for further details on chikungunya.

Take usual precautions
27 February 2026
Togo + Centrale

CVDPV2 in Togo

In the week ending 25 February 2026, one case of circulating vaccine-derived poliovirus type 2 (cVDPV2) was confirmed in Togo. This is the first reported case of cVDPV2 in Togo since 2022. Please see our Topics in Brief article for more details on polio.

Take usual precautions
25 February 2026

Hantavirus in Argentina

As of 8 February 2026, 19 cases of hantavirus have been reported in Argentina since the start of the year. This brings the total number of cases reported since July 2025 to 79. The Centro and South regions have been most severely affected. Please see UKHSA guidance for more details on hantavirus.

Take usual precautions
23 February 2026
Senegal + Tambacounda

Crimean-Congo haemorrhagic fever in Senegal

As of 18 February 2065, one confirmed case of Crimean-Congo haemorrhagic fever (CCHF) has been reported in Tambacounda region. Please see our Topics in Brief article for further details on CCHF.

Take usual precautions
23 February 2026
Zambia + Lusaka

CVDPV2 in Zambia

As of 22 February 2026, the Zambia Ministry of Health reported a cVDPV2-positive environmental sample from Lusaka. Please see our Topics in Brief article for further details on polio.

Take usual precautions
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