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May 7, 2019 · Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite of an infected tick. Most people who get sick with RMSF will have a fever, headache, and rash. RMSF can be deadly if not treated early with the right antibiotic.
Aug 25, 2022 · Cases of RMSF occur in the U.S., Canada, Mexico and South and Central America. Although reported cases happen in every month of the year, most cases occur in warmer months. Advertisement. Who is most at risk for Rocky Mountain spotted fever? Adults and children of all demographics can get Rocky Mountain spotted fever.
RMSF has become increasingly common in certain areas of Arizona over the last several years; between 2002-2021 more than 500 cases and 28 fatalities occurred. Incubation Period. 3–12 days. Signs and Symptoms. Early (1–4 Days) High fever. Severe headache. Malaise. Myalgia. Edema around eyes and on the back of hands.
It may occur anytime the weather is warm, but it most often occurs from April until September. It was first recognized in the Rocky Mountain states. But it may occur throughout the U.S. Most common areas affected are in the southeastern and south central U.S. It's not spread from person to person. What causes Rocky Mountain spotted fever?
Jul 17, 2023 · Author Information and Affiliations. Last Update: July 17, 2023. Go to: Continuing Education Activity. Rocky Mountain spotted fever (RMSF) is an acute febrile tick-borne illness caused by Rickettsia rickettsii. In North America, it is both the most severe and the most common rickettsial infection.
In humans, infection occurs mainly from March to September, when adult ticks are active and people are most likely to be in tick-infested areas. In southern states, sporadic cases occur throughout the year. The incidence is highest in children < 15 years and in people who frequent tick-infested areas for work or recreation.
Rocky Mountain spotted fever occurs mainly from March to September, when adult ticks are active and people are likely to be in tick-infested areas. In the southern states, the disease may occur throughout the year. The infection is more common among people who spend a lot of time in tick-infested areas and among children younger than 15.
