(CHICAGO) -- The rash that prompted a two-hour quarantine of a Delta plane in Chicago Thursday may have been the work of bed bugs, not the monkeypox virus health officials feared.
The itchy passenger was Lise Sievers of Red Wing, Minn., a 50-year-old woman returning home from Uganda, where she was working to adopt two children. Sievers noticed the rash and told her mother, who got worried and called health officials in Indiana.
"It's just a case of bed bugs," Sievers told ABC News affiliate WLS after exiting the plane. "I think I'm going to empty a jar of bed bugs on my mom's bed tonight."
Other passengers aboard Flight 3163 feared the worst as officers wearing Hazmat suits studied the rash, sending photos to the U.S. Centers for Disease Control and Prevention headquarters in Atlanta.
"They didn't tell us very much at all," one passenger told WLS, describing a scene that could have come from the movie Contagion. "When they come on in masks and gloves, you think the worst."
Monkeypox is a rare and sometimes fatal disease similar to smallpox that occurs mostly in central and western Africa. It's contracted through contact with infected animals or their bodily fluids, and can spread among humans through fluids and contaminated clothes or bedding, according to the CDC.
The monkeypox rash consists of raised, fluid-filled bumps, and is usually accompanied by fever, headache and lymph node swelling. Bed bug bites, on the other hand, cause a swollen and red area that may or may not be itchy, without the other symptoms.
Sievers, who was sitting near the bathroom on the plane, recalled the worried looks from other passengers when it became clear she was the cause of the quarantine.
"You could see them thinking, 'Is it safe to use the bathroom?'" she told WLS.
After studying the rash and searching for other signs of infectious disease, health officials released Sievers and her fellow passengers.
"Medical staff at CDC and the Chicago Department of Public Health reviewed the case and, based on the patient's symptoms and photographs of the rash, it does not appear that the signs and symptoms are consistent with a monkeypox infection," the CDC said in a statement. "The ill passenger was advised to seek medical care and the rest of the passengers were released from the plane."
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