Rocky Mountain spotted fever is really a rickettsial disease brought on by Rickettsia rickettsii and transmitted by a number of types of ticks. It's the most critical rickettsial disease in humans. Many instances occur in the southeastern Usa, Midwest, Plains States, and Southwest, however it continues to be seen outside those regions. The Rocky Mountain area, in which the disease was first discovered in the turn of the Twentieth century, now makes up about only a tiny proportion of cases.
Unlike canine ehrlichiosis, Rocky Mountain spotted fever coincides using the tick season (April through September). Both main reservoirs for Rocky Mountain spotted fever are rodents and dogs. Adult ticks transmit the condition to dogs once they attach and feed.
Signs and symptoms of acute infection appear throughout the tick season and can include listlessness, depression, high fever, lack of appetite, cough, conjunctivitis, difficult breathing, swelling of the legs, and joint and muscle pains. Ocular signs, for example uveitis, might be present. Rarely, a rash is going to be noticed round the section of a tick bite.
These symptoms might point to canine ehrlichiosis, Lyme disease, or distemper. Central nervous system signs include unstable gait, altered state of mind, and seizures. Inflammation of the heart muscle (myocarditis) may cause cardiac arrhythmias, resulting in sudden death.
One to 2 weeks following the start of illness, some dogs create a hemorrhagic syndrome much like that seen with canine ehrlichiosis. Various bleeding problems, for example nosebleeds, subcutaneous hemorrhaging, and blood in the urine and stools, may develop. This could cause shock, multiple organ failure, and death.
Rocky Mountain spotted fever should be suspected in a sick dog having a good reputation for tick infestation during April through September. Serologic diagnosis is better achieved by noting an increase in micro-IFA antibody titer in paired serum tests
Treatment: Tetracycline and it is derivative, doxycycline, would be the antibiotics of preference. Enrofloxacin can also be effective. Antibiotics should be started the moment Rocky Mountain spotted fever is suspected, whether or not the diagnosis isn't confirmed. Mortality is high if treatment is delayed.
Furthermore, dogs with Rocky Mountain spotted fever respond dramatically in one to 2 days, which confirms the presumptive diagnosis. Antibiotics are continued for 2 to 3 weeks. Supportive treatment is equivalent to that described for Canine Ehrlichiosis.
Prevention: Tick control may be the mainstay of prevention. Using Frontline or Advantix to manage fleas has got the benefit of also killing ticks for approximately Thirty days carrying out a single application. Collars containing amitraz will also be effective in controlling ticks.
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