Rocky Mountain spotted fever is caused by the bacterium Rickettsia rickettsii and presents with fever, headache, nausea or vomiting, stomach pain, muscle pain and loss of appetite. A red rash typically appears two to four days after fever onset and can range from pinpoint dots to red splotches. The infection is treatable with the antibiotic doxycycline and most people recover, but mortality in treated U.S. cases is five to ten percent and rises to about 25 percent without treatment. Dogs can also be infected and may develop fever, malaise, swollen lymph nodes, reduced appetite, muscle aches and sometimes an oral rash; canine infections can be fatal.
Rocky Mountain spotted fever is a disease caused by the bacteria Rickettsia ricketssii. It's named for the fact that it was first identified in Rocky Mountain valleys of Idaho and Montana in the 1890s. Symptoms in humans can include fever, headache, nausea or vomiting, stomach pain, muscle pain and lack of appetite. The disease is named for the red rash that develops two to four days after the fever begins. The rash can range from pinpoint dots to red splotches.
Dogs can also get Rocky Mountain spotted fever. Dr. Scott Weese, director of the Centre for Public Health and Zoonoses at the University of Guelph, said symptoms in dogs include fever, malaise, enlarged lymph nodes, loss of appetite and muscle aches that make the animals reluctant to move. The rash can sometimes be seen inside the dog's mouth. As with humans, the disease can be deadly in dogs, and Weese said one of the first dogs identified with the disease in Ontario died of it.
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