Southern tick-associated rash illness produces an expanding red rash that looks indistinguishable from early Lyme disease, but it follows a lone star tick bite outside the Lyme range. Decades of investigation have failed to identify a definitive pathogen; the once-suspected Borrelia lonestari has not been confirmed in subsequent cases. The cause remains unknown.
Despite expanding overlap with Lyme disease in the southeastern United States, Amblyomma americanum (the lone star tick) does not transmit…
Amblyomma americanum, the lone star tick, is named for the single white spot on the female's scutum. Unlike Ixodes ticks, which sit and…
A single tick species, Amblyomma americanum, transmits ehrlichiosis from Ehrlichia chaffeensis and E. ewingii, tularemia, Heartland virus,…
Borrelia miyamotoi disease shares a vector with Lyme disease - the same Ixodes species - but presents differently: high fevers that recur…
The textbook bullseye rash with central clearing appears in only about 20 to 30 percent of erythema migrans cases. The more common…
Dermacentor occidentalis transmits Rickettsia 364D (now classified as Rickettsia rickettsii subsp. californica), the cause of Pacific…