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IXCHIQ chikungunya vaccine withdrawn by MRHA
The Medicines and Healthcare products Regulatory Agency (MHRA) has withdrawn the United Kingdom (UK) marketing authorisation for IXCHIQ chikungunya vaccine
Changes to NaTHNaC telephone contact numbers
NaTHNaC Advice Line and General Enquiries telephone numbers will change from Monday, 30 November 2026
Ebola disease
The outbreak remains a public health emergency of international concern
Celebrating Diwali abroad?
Reduce your risk of injury and illness while celebrating Diwali by following our travel health advice
Heading to the Youth Olympic Games in Senegal, West Africa, this autumn?
Make sure you are protected – get the right travel advice, vaccines and malarial tablets before you travel!
Getting to grips with Zika virus
A recording of this session is now available
NaTHNaC
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Updated dengue 'green book' chapter published
The dengue chapter of the 'green book' (Immunisation against infectious disease) has been updated
Polio: Public Health Emergency of International Concern
An update on the polio Public Health Emergency of International Concern (PHEIC)
Mefloquine shortage
Shortage of 250mg mefloquine (Lariam) antimalarial tablets in the United Kingdom (UK) continues
Chikungunya in Switzerland
As of 4 November 2026, four locally acquired cases of chikungunya have been reported by the ECDC [Seasonal surveillance for chikungunya virus disease in the EU/EEA for 2026] in Piana di Magadino area of Ticino. Swiss authorities have confirmed local cases in the canton of Ticino during 2026. Please see our Topics in Brief article for further details on chikungunya.
Crimean-Congo haemorrhagic fever in Mauritania
As of 25 October 2026, one new confirmed fatal case of Crimean-Congo haemorrhagic fever (CCHF) has been reported from Assaba region. This brings the total of CCHF cases in 2026 to three cases with two deaths. Please see our Topics in Brief article for further details on Crimean-Congo haemorrhagic fever.
cVDPV2 in Uganda
As of 4 November 2026, two cVDPV2-positive environmental samples have been reported from Kampala. Samples were collected in September and October and are linked to an emergence from South Sudan. Please see our Topics in Brief article for further details on polio.
Dengue in Nigeria
As of October 2026, a total of 523 suspected dengue fever cases (34 confirmed and four deaths) have been reported in Nigeria for 2026. 220 suspected cases have been reported in October 2026 alone across Akwa-Ibom, Sokoto and Zamfara States. Please see our Topics in Brief article for further details on dengue.
As of June 2026, a total of 95 (nine confirmed) dengue cases have been reported in Nigeria for 2026. Please see our Topics in Brief article for further details on dengue.
Source: StateHealth 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.
Source: StateLazio
Puglia
Veneto
Lombardy
Campania
Dengue in Italy
As of 3 November 2026, the Italian authorities confirmed 76 locally acquired dengue cases reported for 2026 traced to five distinct outbreaks and two sporadic cases in Rome (Lazio) currently being investigated. The largest outbreaks were reported in Livorno and Florence Provinces (Tuscany) with 40 confirmed cases. Other affected provinces include Lecce (Puglia), Milan (Lombardy), Vicenza (Veneto) and Naples (Campania). Please see our Topics in Brief article for further details on dengue.
As of 8 October 2026, the Italian authorities confirmed the 68 locally acquired dengue cases reported for 2026 were in the following regions: Campania (2), Lazio (1), Lombardy (2), Puglia (20), Tuscany (36) and Veneto (7). Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 7 October 2026, a total of 68 confirmed locally acquired dengue cases have been reported for 2026 in Italy. Please see our Topics in Brief article for further details on dengue.
Source: ECDCAs of 29 September 2026, a total of 59 confirmed locally acquired dengue cases have been reported for 2026 in Italy. Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 22 September 2026, a total of 47 confirmed locally acquired dengue cases have been reported for 2026 in Italy. The cases have been reported in Puglia (13), Tuscany (31), Lombardy (2), Campania (1) regions of Italy. Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 8 September 2026, a total of 24 confirmed locally acquired dengue cases have now been reported for 2026 in the Puglia and Tuscany regions of Italy. Please see our Topics in Brief article for further details on dengue.
Source: StateAs of 30 August 2026, a total of three confirmed locally acquired dengue cases have been reported during 2026 in the Puglia and Tuscany regions of Italy. Please see our Topics in Brief article for further details on dengue.
Source: StateYellow fever in Côte d'Ivoire
As of 23 September 2026, 30 confirmed yellow fever cases (10 deaths) have been reported during 2026 across seven regions. The Bounkani Region has reported 18 of these cases. Please see our Topics in Brief article for further details on yellow fever.
As of 14 October 2026, a total of 23 yellow fever cases, with 11 deaths, have now been reported in Côte d'Ivoire for 2026. An outbreak response, including an emergency vaccination campaign, is ongoing. Please see our Topics in Brief article for further details on yellow fever.
Source: StateBetween 1 January and 23 August 2026, a total of 14 yellow fever cases, with two deaths, have been reported in eight health districts of Côte d'Ivoire. Please see our Topics in Brief article for further details on yellow fever.
Source: WHOEbola disease in United Kingdom ex DRC
A UK medical doctor who was working on the Ebola epidemic in the Democratic Republic of the Congo (DRC) has returned to the UK for specialist treatment after testing positive for the disease. The UK Health Security Agency have stated that the risk to the wider public remains low. Please see our Topics in Brief article for further details on Ebola disease.
Measles in USA
On 5 November 2026, the Wisconsin Department of Health Services reported a death in an infant, linked to the ongoing measles outbreak in southwestern Wisconsin. This is the first measles-associated death reported in Wisconsin since 1990. As of 3 November, 431 meases cases across 13 counties in Wisconsin have been reported in 2026. Please see our Topics in Brief article for further details on measles.
As of 23 October 2026, 4,588 confirmed measles cases have been reported across 47 states/jurisdictions in the United States, during 2026. This exceeds the number of cases reported for the whole of 2025 and is the highest number of measles cases reported in the US for 35 years. The highest number of cases have been reported in Pennsylvania (1,327), followed by South Carolina (670) and Utah (535). Please see our Topics in Brief article for further details on measles.
Source: CDCAs of 24 September 2026, 3,659 confirmed measles cases have been reported across 47 states in the United States, during 2026. This exceeds the number of cases reported for the whole of 2025 and is the highest number of measles cases reported in the US for 35 years. The highest number of cases have been reported in Pennsylvania (850), followed by South Carolina (670) and Utah (535). Please see our Topics in Brief article for further details on measles.
Source: CDCAs of 23 July 2026, a total of 2,318 confirmed measles cases have been reported across 45 states of the United States in 2026. This exceeds the number of cases reported for the whole of 2025 and is the highest number of measles cases reported in the US for 35 years. Please see our Topics in Brief article for further details on measles.
Source: CDCOccitanie
Île-de-France
Auvergne-Rhône Alpes
Provence Alpes-Côte d’Azur
Chikungunya in France
As of 2 November 2026, a total of 208 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot, Gard (Occitanie), Gironde, Landes, Pyrenees-Atlantiques (Nouvelle-Aquitaine), Val-de-Marne, Seine-Saint-Denis (Île-de-France), Var (Provence-Alpes-Cote d'Azur) and Drôme (Auvergne-Rhône-Alpes) in France. Please see our Topics in Brief article for further details on chikungunya.
As of 12 October 2026, a total of 162 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot, Gard (Occitanie), Gironde, Landes, Pyrenees-Atlantiques (Nouvelle-Aquitaine), Val-de-Marne (Île-de-France) and Var (Provence-Alpes-Cote d'Azur) in France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 5 October 2026, a total of 146 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine), Val-de-Marne (Île-de-France) and Var (Provence-Alpes-Cote d'Azur) in France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 28 September 2026, 125 locally acquired cases of chikungunya have been identified in France, in Tarn, Lot, Gard (Occitanie), Gironde, Landes (Nouvelle-Aquitaine), Val-de-Marne (Ile-de-France) and Var (Provence-Alpes-Cote d'Azur). Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 23 September 2026, 90 autochthonous cases of chikungunya have been identified in France, in Tarn, Lot (Occitanie), Gironde, Landes (Nouvelle-Aquitaine) and Val-de-Marne (Ile-de-France). Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 9 September 2026, a total of 57 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine) and Val-de-Marne (Île-de-France) in France. Please see our Topics in Brief article for further details on chikungunya.
Source: ECDCAs of 30 August 2026, a total of 46 locally acquired chikungunya cases have been reported during 2026 in Tarn, Lot (Occitanie), Gironde (Nouvelle-Aquitaine) and Val-de-Marne (Île-de-France) in France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 26 August 2026, a total of 33 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde), Occitanie (Tarn, Lot) and Île-de-France (Val-de-Marne) regions of France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 17 August 2026, a total of 25 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde) and Occitanie (Tarn) regions of France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 10 August 2026, a total of 15 locally acquired chikungunya cases have been reported during 2026 in the Nouvelle-Aquitaine (Gironde) and Occitanie (Tarn) regions of France. Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 3 August 2026, seven locally acquired cases of chikungunya have been reported in Tam (Occitanie) and Gironde (Nouvelle-Aquitaine). Please see our Topics in Brief article for further details on chikungunya.
Source: StateAs of 27 July 2026, a locally acquired case of chikungunya has been reported in the Tam region, Occitanie. This is the first locally acquired chikungunya case in mainland France in 2026. Please see our Topics in Brief article for further details on chikungunya.
Source: StateShamonda virus in France
On 2 November 2026, World Health Organization (WHO) published an update following the first ever known case of Shamonda virus (SHAV) infection in a human. The case was an immunocompromised older man from eastern France with no travel history during the preceding year. He developed severe encephalitis (brain inflammation) and died in early October 2026. Vector-borne transmission (via a bite from an infected midge) is thought to be the most likely source of infection. Food-borne transmission is unlikely but remains under investigation. As this is the first documented laboratory confirmed human infection, WHO considers that the public health risk cannot yet be reliably assessed and recommends continued surveillance and investigation.
On 22 October 2026, French health authorities reported the first ever known case of Shamonda virus (SHAV) infection in a human. The case was severely immunosuppressed and died in early October. Some brain complications prior to his death were likely linked to the infection. It is thought that the individual contracted the virus following a bite from a midge in the East of France, where the virus has been been circulating in animals (mainly cattle) since spring/summer 2026. Local health authorities have advised there is no risk to the general population at present as this appears to be an isolated and exceptional case. Please see World Organisation for Animal Health for further details on Shamonda virus.
Source: StateThe Yellow Fever Zone
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