Vox | Flight attendants keep getting sick. It’s likely because of their uniforms.

Rashes, blisters, and hair loss have all been reported. So has vomiting, migraines, and shortness of breath. All of these — and more — are symptoms reported by flight attendants after their airlines got new uniforms. But no one knows why.

Delta is the latest airline to have flight attendants report health issues possibly related to their uniforms, and employees at the airline filed a lawsuit in May against the manufacturer, Lands’ End. But flight attendants have been battling health issues that have appeared after an airline instituted new uniforms for years. And for years, airlines have said their uniforms are safe.

Meanwhile, flight attendants and others are working to discover the cause of their symptoms and the identity and total number of chemicals present in their uniforms, all of which can be difficult to ascertain. Until the cause can be identified — or until airlines start listening to employees and moving quickly after their complaints — it’s likely employees will continue to face symptoms. And it’s likely that flight attendants will keep heading to court, where they’ve historically needed to go to get policy changed by their employers.

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