Thai Man's Death Not Directly Caused by Black Fly Bites

A recent statement from Wang Nuea Hospital in Lampang clarified that a 68-year-old Thai man's death was due to a bloodstream infection and respiratory failure, not directly from black fly bites. This announcement came after online posts sparked public concern, suggesting the man died following an encounter with black flies, locally known as tua khun.

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The man initially visited the hospital on February 8 with calf pain. The doctors found no complications at the time and diagnosed him with muscle inflammation, prescribing medication before his discharge. However, he returned the same evening with severe leg pain and symptoms including numbness and facial discoloration.

Relatives informed the hospital staff of suspicions that black fly bites were involved. Further tests revealed he had severe sepsis and low blood sugar levels. Despite receiving treatment and being transferred to Lampang Hospital on February 15, he succumbed to sepsis and respiratory failure.

Wang Nuea Hospital emphasized that black flies are not venomous and their bites generally lead to minor irritation. The hospital attributed the patient's death to complications arising from the bite, leading to severe sepsis. It advised cleaning bites with water, applying a cold compress, and using anti-itch medication to prevent complications.

Medical staff warned against scratching bites and urged seeking medical attention for severe symptoms such as fever, difficulty breathing, or skin color changes. They also recommended wearing protective clothing and using insect repellent in areas where black flies are prevalent.

Key Takeaways

• The man's death was from sepsis, not directly from black fly bites.

• Black flies are generally not dangerous, causing mild irritation.

• Proper care of bites can prevent severe complications.

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  Adapted by ASEAN Now · The Thaiger · 17 Feb 2026

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