An investigation of mushroom poisoning case in Mae-kapoo Village, Bokaew Sub-district, Samoung District, Chiangmai, 20–23 December 2022
Keywords:
mushroom poisoning, unknown poisonous mushrooms, cockle mushroomAbstract
Background: On 21 December 2022, Chiangmai Provincial Public Health Officer was reported Mushroom poisoning female patient that referred from Samoeng hospital. Her symptoms were nausea, vomiting and weakness. The basic investigation found she ate cockle mushroom (edible mushroom). This investigation was done on 23 December 2022 for confirmation of diagnosis, described the outbreak pattern and proposed the suitable prevention and control measures of this outbreak.
Methods: A descriptive epidemiological study was performed to interview the patient’s daughter, husband, relatives and neighbors. Active case finding by definition: 1) suspected cases were persons in Mae Ka-poo village who ate mushrooms growing on dead logs in their village during 1–22 December 2022 and had nausea, vomiting and at least one of the following symptoms (diarrhea, tiredness and dizziness) and 2) confirm cases were suspected cases who had blood test results showing their organ function values, associated with suspected symptoms of eating poisonous mushrooms, exceeded the standard. In addition, the patient’s medical record was reviewed, and environmental study was conducted.
Results: The investigation found a confirmed mushroom poisoning case was 59 years old, female and Karen tribe. Her symptoms were rash, nausea, vomiting, diarrhea, weakness, anorexia and heart palpitation. The incubation period was about 4 hours. Her blood test results revealed liver and kidney function values exceeded the standard that complied with Amanita family’s toxin. She was treated in hospital for 15 days and was cured.
Conclusions: This cause was expected that she ate unknown poisonous mushrooms that were collected among the edible mushroom (cockle mushroom). Both were similar and grew in the same area. For the outbreak controlling, people had to be informed that they should not collect mushrooms from that area and provided information such as observing the characteristics of each type of mushrooms, observation of mushroom poisoning symptoms, and first aid and early referral for treatment.
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