WHO Cholera, Meningitis and Plague Trends: What 2025 Surveillance Shows

What WHO published

The World Health Organization published its latest annual surveillance synthesis for cholera, meningitis and plague on 29 September 2026. The figures describe reports submitted to WHO for earlier surveillance periods. They are not a real-time count of every infection and they are not an estimate of one person's risk.

The distinction between a reported surveillance total and the true disease burden is central to reading the update. Countries differ in case definitions, laboratory testing, reporting completeness and how they record deaths. Some reports include suspected as well as confirmed cases.

Cholera reports fell, while reported deaths rose

For 2025, 47 countries reported 451,499 cholera cases and 7,870 deaths to WHO. The 2024 comparison was 560,823 reported cases and 6,028 deaths from 60 reporting countries.

On those reported totals, cases were 19.5% lower and deaths were 30.6% higher than in 2024. WHO said the 2025 death total was the highest annual cholera-death count reported to it since 1999.

Those percentages do not establish why the pattern changed. Fewer countries reported cases in 2025, and surveillance practices are not identical across settings. A fall in notifications can reflect more than a change in transmission, while a rise in deaths can reflect access to care, severity, reporting and other factors. The report does not assign one cause.

A small group of countries accounted for most reports

WHO said Angola, Bangladesh, the Democratic Republic of the Congo, Nigeria, South Sudan, Sudan and Yemen accounted for around 90% of reported cholera cases and deaths in 2025.

Bangladesh gives the update regional relevance for South Asia. However, the release does not announce a cholera outbreak in India or Punjab, and it provides no India-specific case count. MedoPulse will not turn neighbouring-country surveillance into an India alert.

The WHO African Region reported 245,501 cases and 5,338 deaths, while the Eastern Mediterranean Region reported 176,654 cases and 2,438 deaths. These are WHO-region totals, not continent-wide estimates of every case.

Why the reported total is not the true burden

The Weekly Epidemiological Record says 81 countries submitted zero reports and no data were received from 77 countries. A zero report is not the same as a finding that no infections occurred, and missing data cannot be treated as absence of disease.

WHO notes that national practices vary in case definitions, testing and recording of deaths. The annual report therefore presents surveillance data submitted to WHO, not a complete global burden estimate.

The report cites a separate endemic-country estimate of 1.3 million to 4 million cholera cases and 21,000 to 143,000 deaths each year. That wide range illustrates uncertainty; it should not be combined with the 2025 reported totals as though both measurements were produced in the same way.

What facility data can and cannot show

A facility-based case-fatality ratio could be calculated for 37 countries. They reported 2,994 deaths in health facilities among 351,482 cases, a ratio of 0.9%. Those countries represented 77.8% of reported cases.

WHO also said more than one in five reported cholera deaths occurred outside health facilities. That observation supports attention to timely access to care, but it does not reveal why every person died or measure the quality of every health system. Place-of-death reporting is not uniform across countries.

Oral cholera-vaccine supply increased

WHO reported that annual oral cholera-vaccine production increased from around 30 million doses in 2022 to approximately 80 million in 2025. The International Coordinating Group approved 71 million doses for affected countries in 2025, including 20 million doses for preventive vaccination.

These allocation figures describe global supply and outbreak-response systems. They do not mean that vaccine is available to every reader, nor do they replace national eligibility guidance or local public-health advice.

Meningitis surveillance needs like-for-like comparisons

In the African meningitis surveillance network, 24 of 26 countries reported 21,526 suspected cases and 971 deaths for 2025, corresponding to a reported fatality ratio of 4.5%.

A simple comparison with the 26,457 suspected cases reported for 2024 would suggest a larger decline, but Ethiopia and Uganda supplied no 2025 data and had contributed 3,766 cases in 2024. WHO's like-for-like comparison among countries reporting in both years showed a 5.9% decrease.

The word suspected matters. These figures are surveillance notifications, not a count of laboratory-confirmed meningitis for every country. Missing country reports were treated as missing data rather than no disease.

WHO said meningococcal serogroup A cases declined by more than 99% among vaccinated populations after introduction of the meningococcal A conjugate vaccine, with no confirmed case reported since 2017 in countries that introduced it. That programme-level observation does not determine an individual's vaccination needs.

Plague reports remained geographically concentrated

For 2019 through 2025, 10 countries reported 3,860 suspected human plague cases to WHO. Six countries reported at least one confirmed case and accounted for 3,847 suspected cases, including 2,646 reported as confirmed, and 423 deaths.

The Democratic Republic of the Congo and Madagascar accounted for 97.7% of reported confirmed cases. WHO cautioned that case ascertainment and classification differed, and absence of reporting does not prove absence of cases.

Plague surveillance includes animal and environmental monitoring because the bacterium can circulate in animal hosts and flea populations. The update is epidemiological context, not evidence that a particular community or traveller has been exposed.

What the update means for India and Punjab readers

The WHO release supports general awareness of how global surveillance, safe water and sanitation, vaccination, laboratory capacity and access to care shape infectious-disease control. It does not establish a new Indian outbreak, change an Indian vaccination schedule or provide Punjab-specific instructions.

Readers should rely on current notices from competent Indian and state public-health authorities for local risks and services. Anyone concerned about symptoms or an exposure should use qualified local medical care rather than trying to interpret global aggregates as a personal diagnosis.

For related same-site context, see MedoPulse's [Infectious Diseases](/categories/infectious-diseases) collection, the earlier [WHO Bundibugyo virus disease update](/articles/who-bundibugyo-virus-disease-update-september-2026), the [U.S. measles surveillance explainer](/articles/us-measles-surveillance-3134-cases-2026), and the general [Cold & Flu guide](/health-topics/cold-and-flu). These pages cover different diseases and should not be treated as interchangeable.

What would require an update

This Article should be updated if WHO revises the annual totals, publishes corrected country reporting, releases India-specific information, changes the vaccine-allocation figures or issues a material methodological clarification. A new local alert would require a separate authoritative Indian or Punjab source.

Medical review status: Pending. MedoPulse has checked the cited WHO sources, but this source-led Article has not been reviewed by a MedoPulse clinician.

Educational notice: MedoPulse provides general public-health information. It does not diagnose infection, estimate personal risk, recommend individual travel or vaccination decisions, prescribe treatment, or replace advice from a qualified healthcare professional.