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Measles - Bangladesh
On 4 April 2026, the National International Health Regulations (IHR) Focal Point for Bangladesh notified WHO of a nationwide increase in measles cases, geographically affecting 58 out of 64 districts across all eight div...
Avian Influenza A(H9N2) - Italy
On 21 March 2026, the National International Health Regulations (IHR) Focal Point for Italy notified the World Health Organization (WHO) of the identification of a human case of avian influenza A(H9) in an adult male ret...
International food safety event: Infant formula and products containing arachidonic acid oil contaminated with cereulide toxin - Multi-country
Multi-country recalls of infant formula and other products have been initiated after cereulide toxin, was detected in batches of multiple internationally distributed brands. Investigations have identified arachidonic aci...
Mpox: recombinant virus with genomic elements of clades Ib and IIb – Global situation
Recombination of monkeypox virus (MPXV) strains has been documented in recent months, with two cases of a recombinant strain comprising clade Ib and IIb MPXV reported. Recombination is a known natural process that can oc...
Nipah virus infection - Bangladesh
On 3 February 2026, the International Health Regulations National Focal Point (IHR NFP) for Bangladesh notified WHO of one confirmed case of Nipah virus (NiV) infection in Rajshahi Division. The patient developed fever a...
Nipah virus disease - India
On 26 January 2026, the National IHR Focal Point for India notified WHO of two laboratory‑confirmed cases of Nipah virus (NiV) infection in West Bengal State. Both are healthcare workers at the same private hospital in B...
Marburg virus disease- Ethiopia
On 26 January 2026, the Ministry of Health of Ethiopia declared the end of the Marburg virus disease (MVD) outbreak. This declaration came after two consecutive incubation periods (a total of 42 days) since the last pers...
Middle East respiratory syndrome coronavirus - Global update
Since the beginning of 2025 and as of 21 December 2025, a total of 19 cases of Middle East respiratory syndrome coronavirus (MERS- CoV), including four deaths have been reported to WHO globally. Of the 19 cases, 17 were ...
Seasonal influenza - Global situation
Seasonal influenza (‘the flu’) is an acute respiratory infection caused by influenza viruses that circulate globally and year-round. It can cause illness ranging from mild to severe, sometimes resulting in hospitalizatio...
Broader transmission of mpox due to clade Ib MPXV – Global situation
The purpose of this report is to raise awareness about the local transmission of clade Ib monkeypox virus (MPXV) among men who have sex with men (MSM) in countries previously unaffected or to date reporting only cases li...
Avian Influenza A(H5N5)- United States of America
On 15 November 2025, WHO was notified of the 71st confirmed human case with influenza A(H5) since early 2024 in the United States of America— the first human case reported in the United States of America since February 2...
Ebola virus disease – Democratic Republic of the Congo
On 1 December 2025, the Ministry of Health (MoH) of the Democratic Republic of the Congo (DRC) declared the end of the Ebola virus disease (EVD) outbreak which had been declared on 4 September 2025. The end was declared ...
Diphtheria - African Region (AFRO)
From 1 January to 2 November 2025, a total of 20 412 suspected diphtheria cases, including 1 252 deaths (an average case fatality ratio [CFR] - 6 %) have been reported across eight Member States in the WHO African Region...
Marburg virus disease- Ethiopia
On 12 November 2025, WHO noted a press release from the Ethiopian Ministry of Health (MoH), and the Ethiopian Public Health Institute (EPHI), announcing suspected viral hemorrhagic viral fever (VHF) in Jinka town, South ...
Rift Valley fever- Mauritania and Senegal
Between 20 September and 30 October 2025, a total of 404 confirmed human cases of Rift Valley fever (RVF), including 42 deaths, were reported by national health authorities in two West African countries: Mauritania and S...
Chikungunya virus disease- Global situation
In 2025, a resurgence of chikungunya virus (CHIKV) disease was noted in a number of countries, including some that had not reported substantial case numbers in recent years. Between 1 January and 30 September 2025, a tot...
Nipah virus infection - Bangladesh
Between 1 January and 29 August 2025, the International Health Regulations National Focal Point (IHR NFP) for Bangladesh notified WHO of four confirmed fatal Nipah virus (NiV) infection cases, temporally unrelated, repor...
Ebola virus disease – Democratic Republic of the Congo
On 1 September 2025, WHO received an alert from the Ministry of Health of the Democratic Republic of the Congo (DRC) regarding suspected cases of Ebola virus disease (EVD) in the Bulape Health Zone, Kasai Province, DRC. ...
Cholera – Multi-country with a focus on countries experiencing current surges
The global cholera situation continues to deteriorate, driven by conflict and poverty, posing a significant public health challenge across multiple WHO regions. Between 1 January and 17 August 2025, a total of 409 222 ch...
Circulating vaccine-derived poliovirus type 1- Israel
On 4 August 2025, Israel notified WHO of a circulating vaccine-derived poliovirus type 1 (cVDPV1) outbreak. Between February and July 2025, nine genetically linked virus isolates were found in environmental samples from ...