DENVER Ė The parents of 7-year-old Sierra Jane Downing thought she had the flu when she felt sick days after camping in Southwest Colorado.
It wasnít until she had a seizure that her father knew something was seriously wrong and rushed her to a hospital in their town of Pagosa Springs.
ďI didnít know what was going on. I just reacted,Ē Sean Downing said. ďI thought she died.Ē
An emergency room doctor who saw Sierra Jane for the seizure and a 107-degree fever late Aug. 24 wasnít sure what the cause was, either, and called other hospitals before the girl was flown to Denver.
There, a pediatric doctor at Rocky Mountain Hospital for Children racing to save Sierra Janeís life got the first inkling that she had bubonic plague. Dr. Jennifer Snow suspected the disease based on the girlís symptoms, a history of where sheíd been and an online journalís article about a teen with similar symptoms.
Dr. Wendi Drummond, a pediatric infectious disease specialist at the hospital, agreed and ordered a specific antibiotic for Sierra Jane while tests were run, later confirming their rare diagnosis.
It was the first bubonic plague case Snow and her colleagues had seen.
ďI credit them for thinking outside the box,Ē said Dr. Tracy Butler, medical director of the hospitalís pediatric intensive unit.
The bubonic plague hasnít been confirmed in a human in Colorado since 2006, when four cases were reported.
Federal health officials say they are aware of two other confirmed and one probable case of plague in the U.S. so far this year Ė an average year. The other confirmed cases were in New Mexico and Oregon, and the probable case also was in Oregon. None died.
Itís not clear why Colorado hasnít seen another human case until now, state public-health veterinarian Elisabeth Lawaczeck said.
Plague is generally transmitted to humans through the bites of infected fleas but also can be transmitted by direct contact with infected animals, including rodents, rabbits and pets.
Officials with the Centers for Disease Control and Prevention acknowledged that a series of frightening illnesses linked to insects and pests have been surfacing lately across the country, including mosquito-borne West Nile virus outbreaks in Texas and other states, deadly hantavirus cases linked to Yosemite National Park, and some scattered plague cases.
But with some of the illnesses Ė such as plague Ė this is not an unusually bad year; itís just getting attention. And the number of cases of each disease is driven by different factors.
ďI donít think thereís a confluence of any particular set of factorsĒ driving the recent illness reports, said Kiersten Kugeler, a CDC epidemiologist in Colorado who tracks plague reports.
In Sierra Janeís case, by the night of Aug. 25, the girlís heart rate was high, her blood pressure was low and a swollen lymph node in her left groin was so painful it hurt to undergo the ultrasound that detected the enlarged node, Snow said.
Doctors say the girl could be discharged from the hospital within a week.
On Wednesday, Sierra Jane flashed a smile with two dimples as she faced reporters in a wheelchair, her pink-toed socks peeking out from the white blanket enveloping her as she held a brown teddy bear.
ďSheís just a fighter,Ē said her mother, Darcy Downing.