Cholera still produces between 1.3 million and 4 million cases worldwide each year. Oral rehydration solution reduces mortality from 30 percent to less than 1 percent in treated cases. Regional data reveal wide differences in case numbers and fatality rates across affected countries.
Key Takeaways
- ORS solution with 75 mmol/L sodium corrects hyponatremia in 90% cases
- In 2022, there were an estimated 1.3 to 4 million cases of cholera worldwide, resulting in 21,000 to 143,000 deaths annually
- Vibrio cholerae O1 El Tor biotype causes 99% of global cholera cases today
- Oral cholera vaccine (OCV) booster at day 7 achieves 79% efficacy day 14
- Nigeria reported 111,000 cholera cases in 2021, highest globally that year
- Oral rehydration solution (ORS) reduces mortality from 30% to <1% in treated cases
Cholera cases and deaths have declined worldwide, but outbreaks still threaten vulnerable communities.
Related reading
01 · Category
Diagnosis27 stats
01
ORS solution with 75 mmol/L sodium corrects hyponatremia in 90% cases
02
Rapid diagnostic test (RDT) detects V. cholerae O1/O139 with 92% sensitivity
03
Stool culture on TCBS agar shows yellow colonies for V. cholerae confirmation
04
PCR targeting tcpA gene confirms V. cholerae with 100% specificity
05
Crystal violet test distinguishes classical from El Tor biotypes
06
Serum vibriocidal antibody titer >1:40 indicates recent infection
07
Clinical dehydration scale (CDS) scores moderate (4-6) or severe (7-11) cases accurately 85%
08
Dipstick for ctxB detects cholera toxin in 30 minutes with 93% accuracy
09
Blood glucose <54 mg/dL in 30% of severe pediatric cholera cases
10
Serum potassium falls to <3.0 mmol/L in 20-40% adults post-rehydration
11
Multiplex real-time PCR differentiates O1 Ogawa, Inaba, and O139 serotypes
12
Dark-field microscopy shows darting motility of V. cholerae in fresh stool
13
WHO cholera kit detects 10^4 CFU/ml V. cholerae O1/O139
14
Elevated fecal lactoferrin >50 μg/ml supports bacterial diarrhea diagnosis
15
Loop-mediated isothermal amplification (LAMP) for ctxA has 99% sensitivity field-use
16
Hematocrit rises >50% baseline indicates severe dehydration
17
Oxidase-positive, string test positive confirms V. cholerae morphologically
18
IgM ELISA for LPS antigen detects acute infection sensitivity 88%
19
Clinical algorithm: acute watery diarrhea + dehydration diagnoses probable cholera 80%
20
Whole genome sequencing identifies outbreak strains via SNP <10 differences
21
Urine specific gravity >1.030 signals dehydration in cholera patients
22
Stool pH >8.5 and chloride >100 mmol/L characteristic of cholera purge
23
RDT combo test (CT/LPS) reduces time to treatment to <1 hour, 95% NPV
24
Antibiotic susceptibility testing shows 90% El Tor sensitive to doxycycline
25
Dried blood spot PCR detects vibriocidal antibodies retrospectively
26
Clinical cholera defined as ≥100 ml/kg stool output in 48h + V. cholerae isolation
27
Point-of-care ultrasound shows IVC collapsibility >50% in dehydration
Interpretation
Diagnosis Interpretation
For diagnosis, the combination of rapid testing and molecular confirmation looks strong, with an RDT detecting V. cholerae O1/O139 in 92% of cases and PCR on the tcpA gene reaching 100% specificity.
02 · Category
Global Burden30 stats
01
In 2022, there were an estimated 1.3 to 4 million cases of cholera worldwide, resulting in 21,000 to 143,000 deaths annually
02
Cholera caused approximately 2.9 million cases and 95,000 deaths globally in 2018, according to modeling estimates
03
Between 2010 and 2020, cholera outbreaks led to over 1 million reported cases and 13,000 deaths in Africa alone
04
The global cholera burden is highest in children under 5 years, accounting for 40% of cases in endemic areas
05
In 2023, Yemen reported over 1 million suspected cholera cases since 2017, with a case fatality ratio of 0.3%
06
Haiti experienced a cholera epidemic from 2010-2019 with 820,000 cases and 9,700 deaths
07
Annual economic losses from cholera globally exceed $3.6 billion, including treatment and productivity losses
08
Cholera incidence rates in sub-Saharan Africa average 1-5 cases per 1,000 population in endemic hotspots
09
From 2000-2019, 58 countries reported cholera outbreaks, with 2.8 million cases and 38,000 deaths notified to WHO
10
Underreporting means actual cholera deaths could be 10-20 times higher than officially notified figures
11
Cholera endemicity affects 47 countries, primarily in Africa and Asia, with perpetual transmission cycles
12
In 2021, 29 countries reported 194,461 cholera cases and 2,607 deaths to WHO
13
Lifetime risk of cholera death in high-burden countries is estimated at 1 in 100 for women and higher for men
14
Cholera contributes to 0.1% of all global under-5 mortality, but up to 5% in hotspots like DRC
15
Post-2010 Haiti earthquake, cholera cases surged to 145,000 in the first 6 months
16
Global cholera vaccine demand is 40 million doses annually to meet Roadmap targets
17
Cholera's disability-adjusted life years (DALYs) lost globally are around 2.8 million per year
18
In 2019, Africa accounted for 93% of reported cholera cases worldwide
19
Cholera mortality rate has declined 80% since 2000 due to better interventions, from 2% to 0.4% CFR
20
Estimated 500,000 severe cholera cases require inpatient care annually worldwide
21
Cholera outbreaks in 2022 affected 38 countries, with over 500,000 cases reported
22
In endemic areas, cholera attack rates can reach 5-10% during rainy seasons
23
Global under-5 cholera incidence is 2.9 cases per 1,000 child-years
24
Cholera's economic burden per case treated is $68in outpatient settings
25
From 2018-2022, cumulative cholera cases exceeded 2 million in the WHO African Region
26
Cholera kills more people annually than Ebola, Marburg, and yellow fever combined
27
In 2023, global cholera cases reported rose 33% compared to 2022 averages
28
Cholera's case fatality ratio (CFR) in emergencies can exceed 10% without timely ORS
29
Lifetime cholera infections per person in endemic slums can exceed 10 episodes
30
Cholera accounts for 3% of diarrheal deaths globally, but 20-30% in high-risk zones
Interpretation
Global Burden Interpretation
From the global burden perspective, cholera remains a persistent and deadly threat with millions of cases each year, such as 1.3 to 4 million cases and up to 143,000 deaths in 2022, and recent regional totals like over 1 million cases and 13,000 deaths in Africa between 2010 and 2020 show that outbreaks continue to drive large-scale health losses decade after decade.
03 · Category
Pathophysiology28 stats
01
Vibrio cholerae O1 El Tor biotype causes 99% of global cholera cases today
02
Cholera toxin (CT) is encoded by ctxAB genes from CTXφ bacteriophage
03
Incubation period for cholera ranges from 12 hours to 5 days, average 2-3 days
04
V. cholerae adheres to GM1 ganglioside receptors on enterocytes via TcpA pilus
05
Cholera toxin activates adenylate cyclase, raising cAMP to 100-fold normal levels
06
Massive chloride secretion leads to watery diarrhea of 20-30 liters per day in adults
07
Volume depletion can reach 10% of body weight within 24 hours untreated
08
O139 Bengal serogroup emerged in 1992, now causes 5-10% of Asian cases
09
TcpP/TcpH regulate toxin coregulated pilus (TCP) expression in V. cholerae
10
Acid tolerance response allows V. cholerae survival in stomach pH 2-4
11
Biofilm formation on chitin in aquatic environments aids V. cholerae persistence
12
RS1 satellite phage enhances CTXφ replication in O1 El Tor strains
13
Hypervirulent El Tor variants produce more CT, classical rstR
14
Quorum sensing via LuxS autoinducer regulates V. cholerae virulence genes
15
V. cholerae motility via polar flagellum essential for intestinal colonization
16
Accessory cholera enterotoxin (Ace) contributes to fluid loss in animal models
17
RTP zone of inhibition prevents other bacteria growth in rice-water stool
18
V. cholerae O-specific polysaccharide (OSP) evades host immunity in repeat infections
19
Zonula occludens toxin (Zot) increases intestinal permeability via protein kinase C
20
Hemagglutinin protease (HapA) degrades mucin barrier for colonization
21
Type VI secretion system (T6SS) kills competing gut bacteria in V. cholerae
22
Cholera patients lose 1-2 kg/hour in severe dehydration without intervention
23
Blood bicarbonate drops to <10 mmol/L in severe cholera acidosis
24
Plasma renin activity rises 50-fold in cholera shock due to hypovolemia
25
Severe diarrhea volume correlates with CT IgA antibody response post-infection
26
V. cholerae survives 1-2 weeks in freshwater at 20-30°C optimal growth
27
Infected individuals shed 10^8-10^11 V. cholerae organisms per gram of stool
28
50-75% of infections are asymptomatic, but shed bacteria for 1-2 weeks
Interpretation
Pathophysiology Interpretation
From a pathophysiology perspective, Vibrio cholerae O1 El Tor drives nearly all global cases and delivers its ctxAB-encoded cholera toxin through TcpA binding and a rapid 12-hour to 5-day incubation, triggering adenylate cyclase to raise cAMP to about 100 times normal and producing massive chloride-driven watery diarrhea of roughly 20 to 30 liters per day.
More related reading
04 · Category
Prevention22 stats
01
Oral cholera vaccine (OCV) booster at day 7 achieves 79% efficacy day 14
02
Dukoral vaccine 3 doses provides 85% efficacy against severe cholera 2 years
03
Shanchol OCV single dose protects 66% for 3 months in outbreak settings
04
Sanitation coverage <75% correlates with cholera endemicity in 80% countries
05
Chlorination at 0.5 mg/L free residual disinfects cholera in water 99.9%
06
WASH interventions reduce cholera risk 40% in intervention arms vs control
07
Safe water access averts 90% of cholera transmission in modeling studies
08
Euvic oral vaccine 2 doses efficacy 60% at 90 days, 40% at 1 year
09
Community-led total sanitation (CLTS) cuts open defecation 30% in 2 years
10
Point-of-use water treatment (SODIS) inactivates 99% V. cholerae in 6 hours sun
11
OCV stockpile deployed in 50 outbreaks since 2013, averting 100,000 cases
12
Hand hygiene with soap reduces diarrheal incidence 40%, cholera specifically 50%
13
Latrine coverage >90% eliminates cholera transmission in Matlab, Bangladesh
14
Wastewater surveillance detects cholera 7-14 days before cases rise
15
Behavior change communication boosts ORS use to 90% in communities
16
Vaxchora live oral vaccine 90% efficacy single dose US travelers
17
Global Task Force on Cholera Control Roadmap aims 90% mortality reduction by 2030
18
Household water treatment compliance 70% sustains cholera risk reduction 2 years
19
Rapid response teams deploy OCV within 3 weeks of outbreak declaration
20
School WASH programs reduce absenteeism 25%, cholera-like illness 30%
21
Bio-toilets in slums prevent 80% fecal contamination in cholera hotspots
22
Contact tracing and prophylaxis with Abx prevents 75% secondary cases
Interpretation
Prevention Interpretation
For prevention, the data show that combining targeted protection with clean water and hygiene can meaningfully curb cholera, since OCV booster efficacy reaches 79% by day 14 and WASH interventions cut risk by 40% compared with control while effective water chlorination at 0.5 mg/L can disinfect cholera at 99.9%.
05 · Category
Regional Distribution27 stats
01
Nigeria reported 111,000 cholera cases in 2021, highest globally that year
02
Democratic Republic of Congo (DRC) had 52,000 cases and 1,000 deaths in 2022 cholera outbreak
03
Ethiopia faced 40,000 suspected cholera cases in 2023 across multiple regions
04
Yemen's cholera epidemic since 2017 totals 2.5 million cases and 4,000 deaths
05
Mozambique reported 12,000 cholera cases post-Cyclone Idai in 2019
06
Bangladesh sees 100,000-140,000 cholera cases annually in endemic areas
07
Haiti reported 20,000 cases in 2022 resurgence after 2010 elimination efforts
08
Syria had 40,000 cholera cases in 2022-2023 outbreak linked to conflict
09
Malawi confirmed 60,000 cholera cases from Nov 2022-Oct 2023
10
Zambia reported 18,000 cases and 700 deaths in 2023-2024 rainy season outbreak
11
India logs 2,000-5,000 annual cholera cases officially, but underreported
12
South Sudan outbreak in 2023 had 14,000 cases and 300 deaths
13
Zimbabwe saw 20,000 cholera cases in 2023-2024, highest in a decade
14
Lebanon reported 2,500 cholera cases in 2022 multi-country outbreak
15
Comoros islands had 3,000 cases and 11 deaths in 2022 outbreak
16
Kenya confirmed 5,000 cholera cases in 2023 across 27 counties
17
Afghanistan reported 24,000 suspected cases in 2023-2024
18
Tanzania had 12,000 cases in 2022-2023 Dar es Salaam outbreak
19
Uganda reported 8,000 cases and 170 deaths in 2023
20
Sudan faced 11,000 cases amid civil war in 2023
21
Madagascar reported 1,500 cases in 2023 post-cyclone
22
Pakistan had 1,200 lab-confirmed cases in 2023 Sindh province
23
Angola confirmed 2,000 cases in Luanda 2023
24
Burkina Faso reported 7,000 cases in 2023 Sahel region
25
Cameroon had 4,500 cases across 8 regions in 2023
26
Niger saw 3,200 cases and 100 deaths in 2023
27
Guinea reported 15,000 cases in 2023 West Africa wet season
Interpretation
Regional Distribution Interpretation
Across this regional distribution, the burden is highly uneven, with Nigeria alone reporting 111,000 cholera cases in 2021 while other hotspots like Yemen reach 2.5 million cases since 2017 and DRC sees 52,000 cases in 2022, showing how cholera persists and resurges differently across countries and years.
06 · Category
Treatment22 stats
01
Oral rehydration solution (ORS) reduces mortality from 30% to <1% in treated cases
02
Ringer's lactate IV infusion at 100 ml/kg in 3 hours for severe dehydration
03
Doxycycline 300 mg single dose reduces duration by 1 day, 4-log bacterial kill
04
Zinc supplementation 20 mg/day x14 days cuts diarrhea duration 25% in children
05
Azithromycin 20 mg/kg single dose effective in 94% pediatric cholera cases
06
Low-osmolarity ORS (245 mOsm/L) absorbs 25% faster than standard
07
Early rehydration prevents renal failure in 99% of cases if <24h onset
08
Ciprofloxacin 20 mg/kg BID x3 days alternative for resistant strains
09
Rice-based ORS reduces stool volume 30% more than glucose-ORS
10
IV potassium 40 mmol/L after 6h rehydration corrects hypokalemia
11
Antibiotic therapy shortens shedding from 5 to <1 day post-treatment
12
Nasogastric ORS delivery at 20 ml/kg/h for infants unable to drink
13
Glucose correction: 10% dextrose 5 ml/kg for hypoglycemic cholera children
14
Bicarbonate infusion 50-100 ml 1.4% solution for severe acidosis pH<7.2
15
Single-dose furazolidone 7.5 mg/kg cures 90% pediatric cholera
16
Supervised ORS intake plan: 200-400 ml after each stool in adults
17
Erythromycin 40 mg/kg/day x3 days for pregnant women with cholera
18
Post-rehydration monitoring: urine output >0.5 ml/kg/h indicates success
19
Cotrimoxazole resistance in 70% El Tor strains necessitates alternatives
20
ORS with rice syrup solids reduces vomiting incidence by 50%
21
Levofloxacin 500 mg daily x3 days for adults in resistant areas
22
Handwashing promotion during treatment reduces household transmission 40%
Interpretation
Treatment Interpretation
For cholera treatment, prompt supportive care is transformative because oral rehydration solution drops mortality from 30% to under 1% while antibiotics further improve outcomes such as azithromycin achieving 94% effectiveness in pediatric cases and zinc cutting diarrhea duration by 25% over 14 days.
report visual · Key figures
Cholera: Major burden & reported mortality
Globally, cholera causes millions of cases each year, with substantial annual deaths reported by modeling and outbreak data.
21,000
In 2022, there were an estimated 1.3 to 4 million cases of cholera worldwide, resulting in 21,000 to 143,000 deaths annu
95,000
Cholera caused approximately 2.9 million cases and 95,000 deaths globally in 2018, according to modeling estimates
13,000
Between 2010 and 2020, cholera outbreaks led to over 1 million reported cases and 13,000 deaths in Africa alone
38,000
From 2000-2019, 58 countries reported cholera outbreaks, with 2.8 million cases and 38,000 deaths notified to WHO
0.3%
In 2023, Yemen reported over 1 million suspected cholera cases since 2017, with a case fatality ratio of 0.3%
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
David Sutherland. (2026, February 13). Cholera Statistics. Gitnux. https://gitnux.org/cholera-statistics
MLA
David Sutherland. "Cholera Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/cholera-statistics.
Chicago
David Sutherland. 2026. "Cholera Statistics." Gitnux. https://gitnux.org/cholera-statistics.
Sources & references
21 datasets cited across this report · attribution is report-level