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As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As 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.

As of 10 December 2025, a total of 67,124 suspected cholera cases (1,939 deaths) have been reported in 12 out of 26 provinces during 2025. Please see our Topics in Brief article for further details on cholera.

Between 1 January and 31 August 2025, a total of 51,074 suspected cholera cases and 1,539 deaths have been reported across 20 out of 26 provinces. Of the 6,648 samples analysed, 2,866 tested positive for cholera. Localised surges in cases are still causing concern, particularly in Goma (North Kivu), in South Kivu, and in parts of Kinshasa. Please see our Topics in Brief article for further details on cholera.

Between 12 and 18 July 2025, 1,820 new confirmed cholera cases and 81 deaths were reported in DRC. The total number of cases reported in 2025 are 38,366 cases and 1,007 deaths across 12 out of 26 provinces. Please see our Topics in Brief article for further details on cholera.

Between 2-8 June 2025, the Democratic Republic of the Congo reported 1,093 suspected cholera cases and 35 deaths, marking a decrease from 1,530 cases and 45 deaths recorded the previous week. Since 1 January 2025, a total of 30,485 suspected cases and 655 deaths have been reported across the country, with half of the 26 provinces reporting cases.

As of 1 September 2026, a total of 407 human cases of West Nile virus have been reported across 40 states in the United States. Of these, 285 cases were reported to be the neuroinvasive form. The highest number of cases have been reported in Arizona (88 cases), California (66 cases) and Texas (46 cases). Please see our Topics in Brief article for further details on West Nile virus.

As of 11 August 2026, a total of 181 human cases of West Nile virus have been reported across 30 states in the United States this year. Of these, 129 cases were reported to be the neuroinvasive form. The highest number of cases have been reported in Arizona (73 cases), Texas (23 cases), and California (18 cases). Please see our Topics in Brief article for further details on West Nile virus.

As of 16 October 2026, a total of 9,415 confirmed Ebola disease (Bundibugyo virus) cases and 4,536 deaths have been reported in Democratic Republic of Congo in eight provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele, South Ubangi and North Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 10 October 2026, a total of 8,978 confirmed Ebola disease (Bundibugyo virus) cases and 4,336 deaths have been reported in the Democratic Republic of the Congo, in seven provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 4 October 2026, 8,603 confirmed Ebola disease (Bundibugyo virus) cases and 4,148 deaths have been reported in the Democratic Republic of the Congo, in seven provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 26 September 2026, 8,067 confirmed Ebola disease (Bundibugyo virus) cases and 3,901 deaths have been reported in seven provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 21 September 2026, 7,773 confirmed Ebola disease (Bundibugyo virus) cases and 3,759 deaths have been reported in seven provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 6 September 2026, a total of 7,200 confirmed Ebola disease (Bundibugyo virus) cases and 3,475 confirmed deaths have now been reported across seven provinces in the Democratic Republic of the Congo: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele, Bas-Uele and South Ubangi. Please see our Topics in Brief article for further details on Ebola disease.

As of 6 September 2026, a total of 6,686 confirmed Ebola disease (Bundibugyo virus) cases and 3,226 confirmed deaths have now been reported across six provinces in the Democratic Republic of the Congo: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 30 August 2026, a total of 6,100 confirmed cases and 2,950 deatha of Ebola disease (Bundibugyo virus) have been reported in six provinces in Democratic Republic of the Congo; Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 22 August 2026, a total of 5,514 confirmed cases and 2,642 deatha of Ebola disease (Bundibugyo virus) have been reported in six provinces in Democratic Republic of the Congo; Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 19 August 2026, a total of 5,290 confirmed Ebola disease (Bundibugyo virus) cases, and 2,516 deaths, have now been reported across six provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 14 August 2026, a total of 4,665 confirmed Ebola disease (Bundibugyo virus) cases, and 2,184 deaths, have now been reported across six provinces: Ituri, North Kivu, South Kivu, Tshopo, Haut-Uele and Bas-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 8 August 2026, a total of 4,294 confirmed Ebola disease (Bundibugyo virus) cases, and 1,960 deaths, have now been reported across five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 2 August 2026, a total of 3,802 confirmed Ebola disease (Bundibugyo virus) cases, and 1,707 confirmed deaths, have now been reported across five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 28 July 2026, 3,442 confirmed Ebola cases and 1,521 deaths have been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article on Ebola for further details.

As of 26 July 2026, a total of 3,262 confirmed Ebola cases and 1,437 deaths have been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 21 July 2026, a total of 2536 confirmed Ebola disease (Bundibugyo virus) cases, and 1033 confirmed deaths, have now been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 19 July 2026, a total of 2,423 confirmed Ebola disease (Bundibugyo virus) cases and 967 confirmed deaths, have now been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 14 July 2026, a total of 2,073 confirmed Ebola disease (Bundibugyo virus) cases and 796 confirmed deaths, have now been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 12 July 2026, a total of 1,963 confirmed Ebola disease (Bundibugyo virus) cases and 719 confirmed deaths, have now been reported in five provinces: Ituri, North Kivu, South Kivu, Tshopo and Haut-Uele. Please see our Topics in Brief article for further details on Ebola disease.

As of 7 July 2026, the Democratic Republic of the Congo's Ministry of Health (MoH) reported 1,759 confirmed Ebola disease cases (600 deaths) caused by Bundibugyo virus, in the ongoing outbreak. Ituri, North-Kivu and South-Kivu provinces have been affected. Please see our Topics in Brief article for further details on Ebola disease.

As of 4 July 2026, the Democratic Republic of the Congo's Ministry of Health (MoH) reported 1,561 confirmed Ebola disease cases (506 deaths) caused by Bundibugyo virus, in the ongoing outbreak. Ituri, North-Kivu and South-Kivu provinces have been affected. Please see our Topics in Brief article for further details on Ebola disease.

As of 1 July 2026, 1,460 confirmed cases of Ebola disease with 447 deaths have been reported in the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 29 June 2026, 1,333 confirmed cases and 399 deaths caused by Bundibugyo virus have been reported in Democratic Republic of the Congo. Confirmed cases have been reported in the provinces of Ituri, North Kivu and South Kivu. Please see our Topics in Brief article for further details on Ebola disease.

As of 27 June 2026, the Democratic Republic of the Congo's Ministry of Health (MoH) reports 1,274 confirmed cases (360 deaths) caused by Bundibugyo virus, in the ongoing Ebola disease outbreak. Ituri, North-Kivu and South-Kivu provinces have been affected. Please see our Topics in Brief article for further details on Ebola disease.

As of 24 June 2026, 1,155 confirmed cases and 304 deaths have been reported from the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 22 June 2026, the Democratic Republic of the Congo's Ministry of Health (MoH) reports 1,094 confirmed cases (277 deaths) caused by Bundibugyo virus, in the ongoing Ebola disease outbreak. Ituri, North-Kivu and South-Kivu provinces have been affected. Please see our Topics in Brief article for further details on Ebola disease.

As of 20 June 2026, 1,003 confirned cases of Ebola disease with 254 deaths have been reported in the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 17 June 2026, a total of 896 confirmed Ebola disease cases, with 232 confirmed deaths, have been reported in the Democratic Republic of the Congo for 2026. Please see our Topics in Brief article for further details on Ebola disease.

As of 15 June 2026, 837 confirmed cases of Ebola disease, with 196 deaths have been reported in the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 13 June 2026, a total of 782 confirmed Ebola disease cases, with 181 deaths, have been reported in the Democratic Republic of the Congo for 2026. Please see our Topics in Brief article for further details on Ebola disease.

As of 10 June 2026, 676 confirmed cases of Ebola disease and 136 deaths have been reported in Democratic Republic of the Congo. Confirmed cases have been reported in Ituri (629 cases), North Kivu (44 cases), and South Kivu (three cases). Please see our Topics in Brief article for further details on Ebola disease.

As of 8 June 2026, 598 confirmed cases of Ebola disease and 115 deaths have been reported in Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 7 June 2026, 544 confirmed cases of Ebola disease and 88 confirmed deaths have been reported in the Democratic Republic of the Congo. The confirmed cases include 29 healthcare workers, five of whom died. Please see our Topics in Brief article for further details on Ebola disease.

As of 3 June 2026, 381 confirmed cases of Ebola disease and 64 deaths have been reported from the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 1 June 2026, the Democratic Republic of the Congo's Ministry of Health (MoH) reports 344 confirmed Bundibugyo virus cases, with 60 confirmed deaths, and 116 suspected cases, as part of the ongoing Ebola outbreak. The number of suspected cases has been revised following the removal of confirmed and negative cases. According to the MoH, 23 new confirmed cases were reported on 1 June 2026. The provinces of Ituri, North-Kivu and South-Kivu have been affected. Please see our Topics in Brief article for further details on Ebola disease.

As of 1 June 2026, the Democratic Republic of the Congo's Ministry of Health reported a total of 321 confirmed Ebola disease cases and 48 confirmed deaths, with 220 suspected cases, as part of the ongoing Ebola outbreak. Please see our Topics in Brief article for further details on Ebola disease.

As of 27 May 2026, 125 confirmed and 906 suspected cases of Ebola disease, with 17 confirmed and 223 suspected deaths have been reported from the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 24 May 2026, a total of 101 confirmed and over 900 suspected Ebola disease cases, with ten confirmed and 220 suspected deaths, have now been reported from the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

As of 22 May 2026, a total of 82 confirmed and 750 suspected Ebola disease cases, with seven confirmed and 177 suspected deaths, have now been reported in the Democratic Republic of the Congo. Please see our Topics in Brief article for further details on Ebola disease.

On 20 May 2026, the World Health Organization reported 51 confirmed cases, 600 suspected (139 suspected deaths) of Ebola disease caused by the Bundibugyo virus. Deaths have been reported in healthcare workers, indicating healthcare associated transmission. Please see our Topics in Brief article for further details on Ebola disease.

As of 19 May 2026, there are now 30 confirmed cases, more than 500 suspected cases, and 130 suspected deaths in the DRC, from the northeastern province of Ituri. An American national has also been confirmed positive and been transferred to Germany, as reported by the U.S. Please see our Topics in Brief article for further details on Ebola disease.

The Director-General of the World Health Organization (WHO), has declared that the Ebola disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda constitutes a public health emergency of international concern (PHEIC). As of 16 May 2026, eight laboratory-confirmed cases, 246 suspected cases and 80 suspected deaths have been reported in Ituri Province of the Democratic Republic of the Congo across at least three health zones, including Bunia, Rwampara and Mongbwalu. Please see our Topics in Brief article for further details on Ebola disease.

As of 15 May 2026, a total of 13 confirmed cases of Ebola disease and four deaths have been reported in DRC. Cases have primarily been reported in the Mongbwalu and Rwampara health zones, with additional suspected cases identified in Bunia. Please see our Topics in Brief article for further details on Ebola disease.

As of 29 August 2026, a total of nine yellow fever cases, with three deaths, have been reported in four states of Venezuela during 2026: Aragua, Barinas, Lara and Monagas. Please see our Topics in Brief article for further details on yellow fever.

As of 13 March 2026, a total of 38 confirmed cases of yellow fever (including 19 deaths) have been reported in Venezuela since January 2025. Cases have been reported from Amazonas, Apure, Aragua, Barinas, Bolívar, Carabobo, Cojedes, Guárico, Lara, Mérida, Monagas, Portuguesa, Táchira, and Trujillo. Please see our Topics in Brief article for further details on yellow fever.

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.

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. Please see our Topics in Brief article for further details on yellow fever.