Pakistan, May 14 -- KARACHI - Health professionals in Karachi are raising the alarm over a sharp rise in cases of a respiratory illness caused by exposure to pigeons, with hospitals now reporting 15 to 20 new patients each week.

The condition, medically known as Bird Fancier's Lung (BFL), is a form of hypersensitivity pneumonitis. It occurs when individuals inhale microscopic particles from bird feathers and droppings, which can cause the lungs to become inflamed.

According to pulmonologist Dr. Muhammad Irfan, long-term exposure to these airborne contaminants can lead to severe and chronic respiratory problems. "The symptoms may begin mildly but can escalate over time, especially if the exposure continues unchecked," he said.

The trend...