多国霍乱爆发，流行病学最新情况#35-2026年3月27日

Epidemiological Update n. 35 published 27 March 2026 In this edition: •Overview•Global epidemiological update•WHO regional overviews•Focus on selected subregions and countries Overview Data as of 22 February 2026 •In February 2026 (epidemiological weeks 5 to 8), a total of 18 715 new cholera and acute watery diarrhoea (AWD)cases were reported from 17 countries, territories, and areas (hereafter countries) across four WHO regions,showing a 3% increase from the previous month. The African Region registered the highest number of cases, •Cholera cases and deaths in February 2026 were both 50% lower than in February 2025 (with 37 061 cases and •For the year so far, from 1 January to 22 February 2026, a total of 36 953 cholera and AWD cases and 451 deathswere reported from 21 countries across four WHO regions, with the African Region recording the highest numbers,followed by the Eastern Mediterranean Region, the Region of the Americas, and the South-East Asia Region. No •In recent years, conflict, mass displacement, disasters from natural hazards, and climate change have intensifiedoutbreaks, particularly in rural and flood-affected areas, where poor infrastructure and limited healthcare access •The data presented here should be interpreted with caution. Potential underreporting and reporting delays mayaffect timeliness and accuracy, while variations in surveillance systems, standard case definitions, and laboratorycapacities can limit direct comparability among countries. These factors also influence the global case fatality rate(CFR), requiring careful examination. Unless otherwise specified, the term 'cholera cases' includes both suspected Global epidemiological update In February 2026, (epidemiological weeks 5 to 8), a total of 18 715 new cholera and AWD cases were reported from17 countries across four WHO regions, representing a 3% increase from the previous month and a 50% decreasecompared with February 2025 (37 061 cases across 24 countries). The global decline was largely driven by reductions In February 2026, the African Region reported the highest number of cases (11 305 cases; 12 countries), followed bythe Eastern Mediterranean Region (7260 cases; three countries), the Region of the Americas (87 cases, one country), During the same period, 269 cholera-related deaths were reported globally. While this marks a 48% increasecompared with January 2026, it remains 50% lower than the mortality burden recorded in February 2025 (537 deaths).In February 2026, the highest number of deaths was recorded in the African Region (264 deaths; seven countries), From 1 January to 22 February 2026, a cumulative total of 36 953 cholera and AWD cases and 451 deaths werereported from 21 countries across four WHO regions. The African Region reported the highest case count (22 288cases, 14 countries), followed by the Eastern Mediterranean Region (14 329 cases, five countries), the Region of theAmericas (212 cases, one country), and the South-East Asia Region (124 cases, one country). During the same period, WHO regional overviews African Region In February 2026, the African Region reported 11 305 new cholera cases across 12 countries, marking a 3% increasecompared with January. The highest numbers of cases were reported from the Democratic Republic of the Congo(5564), Mozambique (3215), and South Sudan (1500). A total of 264 cholera-related deaths were reported, From 1 January to 22 February 2026, a total of 22 288 cholera cases were reported across 14 countries in the AfricanRegion. The highest numbers of cases were reported from the Democratic Republic of the Congo (12 364),Mozambique (4502), and South Sudan (2770). During the same period, a total of 444 deaths were reported from 10 Eastern Mediterranean Region InFebruary 2026, the Eastern Mediterranean Region reported 7260 new cholera and AWD cases across threecountries, marking a 3% increase compared with January. Most cases were reported from Afghanistan (5650), From 1 January to 22 February 2026, a total of 14 329 cholera and AWD cases were reported across five countriesin the Eastern Mediterranean Region. The highest numbers of cases were reported from Afghanistan (11 041), Yemen(1922), and Pakistan (1124). During the same period, a total of five deaths were reported from two countries: Region of the Americas InFebruary 2026, the Region of the Americas reported 87 new cholera cases in Haiti, marking a 30% decreasecompared with January. One cholera-related death was reported in Haiti, unchanged compared with the previous From 1 January to 22 February 2026, a total of 212 cholera cases and two deaths were reported in Haiti. South-East Asia Region In February 2026, the South-East Asia Region reported 63 new cholera or AWD cases in Myanmar, marking a 3%increase compared with January. No cholera or AWD-related deaths were reported during this period. From 1 January to 22 February 2026, a total of 124 cholera or AWD cases were reported in Myanmar.No