Nairobi fly reemerges in Nepal: Monsoon season brings increased risk

The Nairobi fly, resembling a red-black bee, has reappeared in Nepal with the onset of the monsoon season. These flies, known for their toxic secretion ‘pederin’, can cause severe skin irritation, blisters, and wounds if touched or squashed. Symptoms typically appear within 12 to 36 hours.

A recent study indicates that the ‘Nairobi eye’, a condition caused when pederin contacts the eyes, is prevalent during the monsoon. This year, the flies have been reported in Nepal’s hilly regions, expanding from their usual presence in the Terai and neighboring India.

Skin issues caused by the Nairobi fly typically heal within one to four weeks. However, if a bacterial infection develops, medical consultation may be necessary. Severe cases can result in fever, joint pain, and vomiting, but timely treatment generally leads to recovery.