An Outbreak of Histamine Food Poisoning after Ingestion Longtail Tuna in Prisoners Taking Isoniazid from Songkhla Province Prison, Songkhla Province, Thailand
Abstract:
On 3 December 2020, an outbreak of histamine poisoning occurred in the Songkhla province
prison (SPP), Songkhla, Southern of Thailand. A total of 19 cases were identified. A suspected cause
was a Longtail Tuna cooked as a sour curry with papaya delivered from a downtown restaurant. The
aim of the study was to investigate the reason for the outbreak of histamine poisoning in the SPP. A
case-control study was conducted among 19 cases of histamine poisoning and 33 unmatched controls
from the same prison. Both cases and controls were diagnosed with pulmonary tuberculosis (TB) and
still receiving anti-tuberculosis drugs. The toxic histamine concentration level in cooked Longtail
Tuna sour curry with papaya and clinical characteristics of the 19 cases were measured and analyzed.
The characteristics of cases and controls were compared. 19 (36.5%) of 52 prisoners in SPP who
consumed the Tuna fish had developed allergic reactions. The manifestation of symptoms was skin
rash 100%, itching 100%, dizziness 94.7%, headache 78.9%, nausea 47.4%, vomiting 5.3%, diarrhea
10.5%, and chest tightness 42.1%. The median time from consumption to developing symptoms was
40 minutes. Most prisoners abruptly recovered with antihistamine and symptomatic treatments. All
cases were taking isoniazid (INH) as an anti-tuberculosis treatment. The elevated histamine level of
10 mg/kg of tuna was measured in the cooked Tuna. However, the level was still lower than the
hazardous levels (50 mg/kg of food). INH suppresses both monoamine oxidase and diamine oxidase,
thus decreasing histaminase activity causes more toxic of histamine poisoning. This outbreak of
histamine poisoning was a result of the interaction between INH and fish containing histamine at the
levels below hazard level. In patients with active tuberculosis especially those who were treated with
INH, the drug and food containing histamine should be avoided to prevent histamine poisoning.