Home Medizin Informieren Sie sich über Symptome und Präventionsmaßnahmen, während das CDC Reisende nach Mexiko warnt

Informieren Sie sich über Symptome und Präventionsmaßnahmen, während das CDC Reisende nach Mexiko warnt

von NFI Redaktion

The US Centers for Disease Control and Prevention issued a health warning for travelers to Baja California, Mexico, about Rocky Mountain spotted fever, a potentially life-threatening bacterial infection transmitted by tick bites.

The CDC reported that since July, five cases of Rocky Mountain spotted fever, including three deaths, have been reported in Southern California. All affected individuals had a travel or residency history in Tecate, a city in Baja California, officials said.

„Four patients were under 18 years of age. Three patients were US residents and two were Mexican residents,“ the CDC said in a press release on Friday. „RMSF (Rocky Mountain spotted fever) is endemic in several northern Mexican border states, including Baja California, Sonora, Chihuahua, Coahuila, and Nuevo León.“

Rocky Mountain spotted fever is a severe illness transmitted by the Rickettsia rickettsii bacterium through tick bites. It is a rapidly progressing disease that can be fatal within a few days if not promptly treated with the antibiotic doxycycline.

„Healthcare providers should consider RMSF in their differential diagnosis of patients who have recently traveled to Tecate, Mexico, or other areas in northern Mexico and subsequently develop signs or symptoms of an unspecified severe febrile illness. Consider initiating doxycycline based on suspected clinical and epidemiological findings,“ the press release said. „Ascertain the results and do not delay treatment until the result of a confirmatory laboratory test is available. Early treatment with doxycycline saves lives.“

Although Lyme disease and Rocky Mountain spotted fever are both tick-borne diseases, the underlying bacteria causing the infections and the symptoms are different.

Signs of Rocky Mountain spotted fever

Symptoms begin within two days to two weeks after the tick bite. Symptoms include headache, nausea, high fever, rash, abdominal pain, loss of appetite, and light sensitivity. As the infection becomes more severe, the patient may experience confusion, numbness, shortness of breath, seizures, and restlessness.


Rocky Mountain spotted fever cannot be transmitted from person to person. The most common transmitters are the American dog tick and the Rocky Mountain wood tick.

About 6,000 cases of Rocky Mountain spotted fever are reported in the United States every year. The cases occur throughout the country, most commonly in North Carolina, Tennessee, Missouri, Arkansas, and Oklahoma.


There are no vaccines to prevent the infection. Therefore, the best way to prevent infection is to protect yourself and your pets from tick bites. The CDC recommends reducing time spent in grassy, bushy, or wooded areas susceptible to ticks, using insect repellent, and showering within two hours of entering the house to reduce the risk of tick-borne diseases.

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