MeSH definition : An acute febrile illness caused by RICKETTSIA RICKETTSII. It is transmitted to humans
by bites of infected ticks and occurs only in North and South America. Characteristics
include a sudden onset with headache and chills and fever lasting about two to three
weeks. A cutaneous rash commonly appears on the extremities and trunk about the fourth
day of illness.;
An acute febrile illness caused by RICKETTSIA RICKETTSII. It is transmitted to humans
by bites of infected ticks and occurs only in North and South America. Characteristics
include a sudden onset with headache and chills and fever lasting about two to three
weeks. A cutaneous rash commonly appears on the extremities and trunk about the fourth
day of illness.