Plague confirmed in Oregon man bitten by stray cat

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PORTLAND, Ore. — Health officials have confirmed that an Oregon man has the plague after he was bitten while trying to take a dead rodent from the mouth of a stray cat. The unidentified Prineville, Ore., man was in critical condition on Friday. He is suffering from a blood-borne version of the disease that wiped out at least one-third of Europe in the 14th century — that one, the bubonic plague, affects lymph nodes.

There is an average of seven human plague cases in the U.S. each year. A map maintained by the Centers for Disease Control and Prevention shows that most cases since the 1970s have been in the West, primarily the southwest. The plague bacteria cycles through rodent populations without killing them off; in urban areas, it’s transmitted back and forth from rats to fleas. There’s even a name for it, the “enzootic cycle.”

The bacteria thrive in forests, semi-arid areas and grasslands, which plague-carrying rodents from wood rats to rock squirrels call home.
Once a coin flip with death, the plague is now easier to handle for humans in the U.S. The national mortality rate stood at 66 percent before World War II, but advances in antibiotics dropped that rate to its present 16 percent. Central Oregon health officials don’t blame the cat.
“The reality is that, in rural areas, part of the role of cats is to keep the rodent population controlled around our homes and barns” said Karen Yeargain of the Crook County Health Department.

The Prineville man, who is in his 50s, remained in critical condition Friday at a Bend hospital. His illness marks the fifth case of plague in Oregon since 1995. State public health veterinarian Dr. Emilio DeBess told The Oregonian that the man was infected when he was bitten by the stray his family befriended. The cat died and its body is being sent to the CDC for testing. DeBess has collected blood samples from two dogs and another cat that lives with the man’s family, the newspaper reported. DeBess also collected blood samples from neighbors’ pets and from animals in the local shelter to determine whether the area has a plague problem. More than a dozen people who were in contact with the sick man have been notified and are receiving preventive antibiotics. SOURCE

It’s back: Middle Ages scourge of Black Death popping up in affluent regions of U.S.

June 14, 2012 – HEALTH - Although the plague is typically considered a remnant of the Middle Ages, when unsanitary conditions and rodent infestations prevailed amid the squalor of poverty, this rare but deadly disease appears to be spreading through wealthier communities in New Mexico, researchers report. Why the plague is popping up in affluent neighborhoods isn’t completely clear, the experts added. “Where human plague cases occur is linked to where people live and how people interact with their environment,” noted lead researcher Anna Schotthoefer, from the Marshfield Clinic Research Foundation in Wisconsin. “These factors may change over time, necessitating periodic reassessments of the factors that put people at risk.” This latest study confirms previous reports that living within or close to the natural environments that support plague is a risk factor for human plague, Schotthoefer said. Plague is caused by a fast-moving bacteria, known as Yersinia pestis, that is spread through flea bites (bubonic plague) or through the air (pneumonic plague). The new report comes on the heels of the hospitalization on June 8 of an Oregon man in his 50s with what experts suspect is plague. According to The Oregon Live, the man got sick a few days after being bitten as he tried to get a mouse away from a stray cat. The cat died days later, the paper said, and the man remains in critical condition. For the new study, published in the July issue of Emerging Infectious Diseases, the researchers used U.S. Census Bureau data to pinpoint the location and socioeconomic status of plague patients. About 11 cases of plague a year have occurred in the United States since 1976, with most cases found in New Mexico. Plague has also been reported in a handful of other states. Although many cases were in areas where the habitat supports rodents and fleas, the researchers also found cases occurring in more upper-class neighborhoods. In the 1980s, most cases occurred where housing conditions were poor, but more recently cases have been reported in affluent areas of Santa Fe and Albuquerque, the investigators found. “The shift from poorer to more affluent regions of New Mexico was a surprise, and suggests that homeowners in these newly developed areas should be educated about the risks of plague,” Schotthoefer said. Schotthoefer noted that these more affluent areas where plague occurred were regions where new housing developments had been built in habitats that support the wild reservoirs of plague, which include ground squirrels and wood rats. Bubonic plague starts with painful swellings (buboes) of the lymph nodes, which appear in the armpits, legs, neck or groin. Buboes are at first a red color, then they turn a dark purple color, or black. Pneumonic plague starts by infecting the lungs. Other symptoms include a very high fever, delirium, vomiting, muscle pains, bleeding in the lungs and disorientation. In the 14th century, a plague called the Black Death killed an estimated 30 percent to 60 percent of the European population. Victims died quickly, within days after being infected. –Yahoo News