The World Health Organization has issued an alert over a confirmed hantavirus case after a 69-year-old woman died from the disease. WHO investigators suspect human-to-human transmission occurred and are now tracking down more than 82 passengers who traveled on the same aircraft as the woman. Hantavirus is a rare but serious viral illness typically transmitted through contact with infected rodents or their droppings, though this case raises concern about potential airborne spread. Health authorities are monitoring the situation closely. Tourists visiting Crete and Greece are advised to follow standard hygiene precautions, avoid contact with wild rodents, and seek medical attention promptly if they develop fever, fatigue, or respiratory symptoms, particularly if they have recently traveled on an affected flight. No specific travel restrictions are currently in place.