Investigation of the first carbon monoxide poisoning cluster associated with a hotpot restaurant in…

StudyWestern Pacific surveillance and response journal : WPSAR· 2026

Investigation of the first carbon monoxide poisoning cluster associated with a hotpot restaurant in Thailand, 2023.

Siriyakorn Thanasitthichai, Oranut Srihadom, Tanaporn Thongsim … Pawinee Doungngern

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Undersea & Hyperbaric MedicineStudyClinical practiceQ3IF 1.1

Simulation showed carbon monoxide levels far above standard in hotpot dining room.

Investigation of the first carbon monoxide poisoning cluster associated with a hotpot restaurant in Thailand, 2023.

Siriyakorn Thanasitthichai … Pawinee Doungngern

Western Pacific surveillance and response journal · 2026 · Q3 in Public Health

Purpose

On 27 June 2023, the Thailand Department of Disease Control was notified of an incident of carbon monoxide poisoning related to a Thai-style hotpot restaurant.

Methods

The restaurant owner, restaurant guests and waiting staff were interviewed, and the medical records of hospitalized cases were reviewed.

n = 23 cases

183.16

Results

183.16

± 55.15 ppm

carbon monoxide reached levels far above the safe air quality standard

n = 23 cases

More results

There were 11 cases, all of whom were guests who dined in the same private dining room.

The median age of cases was 28 years (range 2-62 years).

Ten similar poisoning incidents occurred between 2019 and June 2023, totalling 23 cases and 2 deaths; none occurred in a restaurant.

More results

DISCUSSION: Charcoal use in poorly ventilated areas poses a health risk, especially for children.

“

Conclusion

Public health policy should mandate regular restaurant inspections to ensure compliance with occupational and environmental health standards.

Investigation of the first carbon monoxide poisoning cluster associated with a hotpot restaurant in Thailand, 2023.

Investigation of the first carbon monoxide poisoning cluster associated with a hotpot restaurant in Thailand, 2023.

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