First locally transmitted Oz virus case confirmed in South Korea

On 2026-05-07, South Korea’s health authorities confirmed the country’s first locally detected human Oz virus infection. The patient, a woman in her 80s with no overseas travel history, had previously been tested after presenting with fever, chills, and muscle pain, and later recovered. The report describes Oz virus as a tick-borne RNA virus previously seen in Korea only in an imported case.