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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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Influenza A(H9N2) in Italy ex Senegal

On 10 April 2026, the World Health Organization reported the first imported human case of avian influenza A(H9N2) in Italy. The case was in an adult returning from Senegal. This is also the first imported human case of avian influenza A(H9N2) reported in the European Region. Please see our Topics in Brief article for further details on avian influenza.

Take usual precautions
10 April 2026

Lassa fever in Nigeria

In 2026, up to 29 March, 3,831 suspected, 663 confirmed and five probable cases, and 167 deaths have been reported across 22 states. Of all confirmed cases 85% were reported from five states (Bauchi, Ondo, Taraba, Edo and Benue). Please see our Topics in Brief article for further details on Lassa fever.

Take usual precautions
10 April 2026

Hantavirus in Argentina

Between 1 January and 28 March 2026, 32 confirmed cases of hantavirus infection and eight deaths have been reported. Cases have been reported in the following provinces: Buenos Aires, Salta, Chubut, Río Negro, Entre Ríos and Jujuy. Please see UKHSA guidance for more details on hantavirus.

Take usual precautions
09 April 2026

Measles in Bangladesh

Between 15 March and 7 April 2026, a total of 1,398 confirmed measles cases with 21 (128 suspected) deaths have been reported in Bangladesh. The highest number of suspected cases have been reported from the Dhaka, Rajshahi and Chattogram Divisions. Please see our Topics in Brief article for further details on measles.

Take usual precautions
08 April 2026

Hepatitis A in Sweden

As of 27 March 2026, a total of 11 cases of hepatitis A (genotype IA) associated with eating frozen imported strawberries and raspberries have been reported in Sweden since autumn 2025. Please see our Topics in Brief article for further details on hepatitis A.

Take usual precautions
08 April 2026

Dengue in New Caledonia

As of 2 April 2026, a total of 580 dengue cases have been reported in New Caledonia since January 2026. DENV?1 is the predominant circulating serotype. Please see our Topics in Brief article for further details on dengue.

Take usual precautions
07 April 2026

Influenza A(H7N7) in Taiwan

On 3 April 2026, it was reported that the first locally acquired human case of avian influenza A(H7) in Taiwan has been identified as avian influenza A(H7N7). Please see our Topics in Brief article for further details on avian influenza.

Take usual precautions
07 April 2026

Mpox in Ecuador

On 3 April 2026, the first detection of clade Ib mpox in Ecuador was confirmed. Please see our Topics in Brief article for further details on mpox.

Take extra precautions
07 April 2026

Mpox in Singapore

On 2 April 2026, the first two cases of clade Ib mpox were confirmed in Singapore. Please see our Topics in Brief article for further details on mpox.

Take extra precautions
07 April 2026

Yellow fever in Colombia

In 2026, up to 6 April, 35 confirmed yellow fever cases including 18 deaths have been reported in Colombia. Please see our Topics in Brief article for further details on yellow fever.

Take usual precautions
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