In the United States, unintentional carbon monoxide poisoning kills about 430 people each year and sends roughly 20,000 cases to emergency departments. Headache appears in 90% of mild exposures, yet many incidents still cluster in winter with half of cases occurring from January to March. Outcomes also vary by setting and intent, from residential heating and attached garages to deliberate exposures that change who shows up in hospital.
Key Takeaways
- In the United States, there are approximately 400 accidental non-fire-related deaths from carbon monoxide poisoning annually.
- Globally, carbon monoxide poisoning affects an estimated 10,000 people per year with severe outcomes.
- In the UK, there are around 50 deaths and 4,000 hospital admissions due to CO poisoning each year.
- US annual non-fire CO deaths average 430 from 2004-2019.
- Case fatality rate for unintentional CO poisoning is 1-2% in hospitalized patients.
- In the US, 70% of CO deaths occur in residences.
- CO detectors installed in only 40% US homes.
- Hyperbaric oxygen therapy halves neurological sequelae in severe cases.
- CO alarms reduce US deaths by 50% in equipped homes.
- Residential heating systems cause 30% of CO poisonings.
- Generators account for 20% of US CO deaths post-disasters.
- Vehicle exhaust in attached garages causes 25% of fatal cases.
- Headache is the most common symptom, reported in 90% of mild CO poisoning cases.
- At 100 ppm COHb, neurological symptoms appear in 50% of exposed individuals.
- Cherry-red skin occurs in only 2-3% of severe CO poisoning cases.
In the US alone, hundreds of people die yearly from accidental carbon monoxide, with winter peaks.
Related reading
01 · Category
Incidence and Prevalence20 stats
01
In the United States, there are approximately 400 accidental non-fire-related deaths from carbon monoxide poisoning annually.
02
Globally, carbon monoxide poisoning affects an estimated 10,000 people per year with severe outcomes.
03
In the UK, there are around 50 deaths and 4,000 hospital admissions due to CO poisoning each year.
04
Emergency departments in the US see about 20,000 cases of CO poisoning yearly.
05
In Europe, CO poisoning incidence is estimated at 10-40 cases per 100,000 population annually.
06
South Korea reports over 1,000 CO poisoning cases per year, with a high rate of intentional exposures.
07
In Australia, there are approximately 500 CO-related emergency visits annually.
08
Canada records about 50 CO deaths and 2,000 hospital cases yearly.
09
In India, CO poisoning from biomass fuel affects millions, with 10,000+ hospital admissions yearly.
10
Japan sees around 500 suicides by CO annually from car exhaust.
11
In the US, children under 5 represent 12% of CO poisoning ED visits.
12
Elderly over 65 account for 36% of non-fire CO deaths in the US.
13
Peak CO poisoning incidents occur in winter months, with 50% of US cases January-March.
14
In China, urban CO poisoning rates are 2.5 per 100,000 population.
15
Brazil reports 1,200 CO poisoning cases annually, mostly from charcoal use.
16
In the US, firefighters respond to 70,000 CO alarms yearly, 40% false.
17
Globally, 30% of CO poisonings are occupational.
18
In France, 1,000-2,000 severe CO intoxications occur yearly.
19
US military reports 200+ CO exposures annually in training.
20
In Russia, CO poisoning peaks at 5,000 cases during cold seasons.
Interpretation
Incidence and Prevalence Interpretation
These numbers paint a grimly repetitive picture: whether by accident in a winter home, the desperate act in a parked car, or the silent peril of a charcoal burner, carbon monoxide proves itself a universal, class-blind killer that respects no border but consistently preys on the vulnerable.
02 · Category
Mortality and Fatality Rates19 stats
01
US annual non-fire CO deaths average 430 from 2004-2019.
02
Case fatality rate for unintentional CO poisoning is 1-2% in hospitalized patients.
03
In the US, 70% of CO deaths occur in residences.
04
Globally, CO causes 10,000-20,000 deaths yearly from incomplete combustion.
05
Suicide by CO accounts for 15% of poisoning deaths in the US.
06
In England, CO fatalities dropped 70% from 1995-2012 due to regulations.
07
Children have a 10-fold higher mortality risk from CO per exposure level.
08
In the US, generator-related CO deaths spiked 600% post-hurricanes.
09
Overall US CO death rate is 0.13 per 100,000 population.
10
In Korea, intentional CO poisoning fatality rate is 30%.
11
US garage CO deaths: 20% of non-fire total.
12
Pregnant women exposed to CO have 3x miscarriage risk leading to fetal death.
13
Post-WWII, boat CO deaths in US average 150/year.
14
In the EU, CO mortality rate declined 50% since 2000.
15
US firefighters: 50 CO-related deaths since 2000.
16
Global CO-attributable deaths: 50,000 from household air pollution.
17
In California, CO death rate 0.1 per 100,000, lower than national.
18
Intentional CO deaths increased 11% in US 2011-2020.
19
Survivors of severe CO poisoning have 20% one-year mortality.
Interpretation
Mortality and Fatality Rates Interpretation
Our homes harbor the deadliest kind of guest, an invisible one named carbon monoxide, which annually claims a few hundred American lives quietly in their sleep while making pregnancy more perilous and surviving its attack a coin toss, proving that simple awareness and regulation are powerful antidotes to this silent, global killer.
03 · Category
Prevention, Detection, and Treatment20 stats
01
CO detectors installed in only 40% US homes.
02
Hyperbaric oxygen therapy halves neurological sequelae in severe cases.
03
CO alarms reduce US deaths by 50% in equipped homes.
04
Annual chimney inspections prevent 70% of heating-related poisonings.
05
100% oxygen therapy reduces half-life of COHb from 4 to 1 hour.
06
Mandatory CO detectors in UK halved deaths since 2001.
07
Generator placement 20ft from home cuts risk 90%.
08
Professional installation of vents prevents 80% appliance failures.
09
Blood COHb >25% indicates need for HBO in 90% guidelines.
10
Education campaigns reduce ED visits by 25% in targeted areas.
11
Pulse CO-oximeters detect 95% of symptomatic cases accurately.
12
Annual fuel-burning appliance service needed for 95% safety.
13
Normobaric oxygen resolves symptoms in 80% mild cases within 4 hours.
14
Laws mandating CO detectors in rentals cut incidents 40%.
15
Early evacuation and fresh air exposure saves 98% mild victims.
16
Methylene blue ineffective; only supportive care for most.
17
Workplace CO monitors required; reduce incidents 75%.
18
Post-exposure neuropsychological testing improves outcomes 30%.
19
Battery replacement in detectors every 6 months prevents 60% failures.
20
Public awareness training reduces intentional exposures by 20%.
Interpretation
Prevention, Detection, and Treatment Interpretation
We have a tragic arsenal of proven, life-saving defenses against carbon monoxide, yet we treat them like optional accessories rather than the essential guardians they are.
04 · Category
Sources and Exposure Risks17 stats
01
Residential heating systems cause 30% of CO poisonings.
02
Generators account for 20% of US CO deaths post-disasters.
03
Vehicle exhaust in attached garages causes 25% of fatal cases.
04
Faulty water heaters implicated in 15% of incidents.
05
Charcoal grills indoors lead to 10% of non-fire deaths.
06
Wood stoves malfunction in 12% of winter poisonings.
07
Migrant farmworkers face 40% higher CO risk from heaters.
08
Boats with poor ventilation cause 150 US deaths/decade.
09
Industrial processes contribute 5% of civilian exposures.
10
Hookah lounges expose users to CO levels 10x OSHA limit.
11
Biomass cooking fuels cause 90% of CO in developing countries.
12
Paint strippers with methylene chloride produce lethal CO.
13
Fireplaces without dampers risk 8% of home incidents.
14
Propane heaters unvented cause 18% portable fuel deaths.
15
Welding fumes expose 2 million US workers to CO daily.
16
Laundry dryers vented improperly in 3% cases.
17
85% of CO deaths from known faulty appliances.
Interpretation
Sources and Exposure Risks Interpretation
When you combine human ingenuity with an almost comical disregard for venting, you create a predictable recipe for an invisible killer, as these statistics grimly illustrate.
05 · Category
Symptoms and Clinical Effects18 stats
01
Headache is the most common symptom, reported in 90% of mild CO poisoning cases.
02
At 100 ppm COHb, neurological symptoms appear in 50% of exposed individuals.
03
Cherry-red skin occurs in only 2-3% of severe CO poisoning cases.
04
30% of CO victims experience long-term cognitive deficits.
05
Dizziness reported in 70% of symptomatic CO exposures.
06
Myocardial ischemia risk increases 2-3 fold at COHb >10%.
07
Nausea and vomiting in 50% of moderate CO poisoning.
08
40% of pregnant women with CO exposure have fetal distress symptoms.
09
Fatigue/weakness in 60% of all reported CO cases.
10
At 400 ppm, headache and nausea within 1-2 hours in 100% exposed.
11
Parkinsonism develops in 1% of severe CO survivors.
12
Children show irritability and ataxia at lower CO levels than adults.
13
25% of mild cases have confusion mimicking stroke.
14
Hyperbaric oxygen reduces symptoms in 50% of moderate cases.
15
Visual disturbances in 20% of CO poisonings.
16
Chest pain in 15% due to CO-induced angina.
17
Seizures occur in 5-10% of severe pediatric cases.
18
Memory loss persists in 15% of hospitalized patients at 6 months.
Interpretation
Symptoms and Clinical Effects Interpretation
Behind the sneaky ubiquity of a mere headache lies a grim parade of neurological ruin, heart strain, and lasting cognitive shadows, proving carbon monoxide is a master of disguise with devastating consequences.
Reference
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APA
Emilia Santos. (2026, February 27). Carbon Monoxide Poisoning Statistics. Gitnux. https://gitnux.org/carbon-monoxide-poisoning-statistics
MLA
Emilia Santos. "Carbon Monoxide Poisoning Statistics." Gitnux, 27 Feb 2026, https://gitnux.org/carbon-monoxide-poisoning-statistics.
Chicago
Emilia Santos. 2026. "Carbon Monoxide Poisoning Statistics." Gitnux. https://gitnux.org/carbon-monoxide-poisoning-statistics.
Sources & references
33 datasets cited across this report · attribution is report-level