| PRINCIPAL DISEASES VECTORED   TO HUMANS BY TICKS   (Table
  derived & updated from Matheson 1950) (Contact)     Please
  CLICK on
  underlined links for more details:   
  
   
    | DISEASE | PATHOGEN | VECTORS | DISTRIBUTION |  
    |   |   |   |   |  
    | Tick
    Paralysis | Resembles Poliomyelitis | Dermacentor andersoni, D. variabilix, Ixodes holocycius, I. pilosus, I. ricinus | Australia, Europe, India, South Africa, North
    America |  
    |   |   |   |   |  
    | Relapsing
    Fever | Spirochaeta spp. | Ornithodoros spp. | Widespread worldwide |  
    |   |   |   |   |  
    | Rocky
    Mountain Fever | Rickettsia rickettsii | Dermacentor andersoni,, D. parumapertus, D. variabilis, D. occidentalis, Amblyomma americanum, A. cajennense, Rhipicephalus sanguineus, Ornithodoros parkeri, O.
    nicollei, Haemaphysalis leporis-palustris | Mexico, North America, South America |  
    |   |   |   |   |  
    | Australian "Q" Fever | Coxiella (Rickettsia) burneti | Ixodes holocyclus, Haemaphysalis
    humerosa | Australia, Europe, United States? |  
    |   |   |   |   |  
    | Nine-Mile Fever | Coxiella (Rickettsia)  diaporica | Dermacentor andersoni,, D. occidentalis, Otobius megnini, Ornithodoros moubata, O. hermsi, Amblyomma americanum, Rhipicephalus sanguineus | North & Central America |  
    |   |   |   |   |  
    | Boutonneuse Fever | Rickettsia rickettsi conori | Rhipicephalus sanguineus | Mediterrean area, North Africa |  
    |   |   |   |   |  
    | African
    Tick Bite Fever | Rickettsia rickettsi pijperi | Amblyomma
    hebraeum, Haemaphysalis
    leachi | Southern Africa |  
    |   |   |   |   |  
    | Colorado
    Tick Fever | Coltivirus | Dermacentor andersoni, | Intermountain Area of Western United States |  
    |   |   |   |   |  
    | Bullis
    Fever | Virus (unidentified) | Amblyomma americanum | Southern Great Plains of United States |  
    |   |   |   |   |  
    | Tick
    Typhus | Rickettsia bacteria | Dermacentor nuttali + |   |  
    |   |   |   |   |  
    | Tularemia | Pasteurella tularensis | Dermacentor andersoni,, D. parumapertus, D. variabilis, D. occidentalis, D. marginatus, Haemaphysalis
    leporis-palustris | Europe, 
    Russia, Middle East, North Africa, Japan, North America |  
    |   |   |   |   |  
    | Russian Encephalitis | Virus (unidentified) | Ixodes persulcatus,
    Dermacentor silvarum, Haemaphysalis
    concinna, H. japonica, Ixodes
    ricinus | Siberia, Europe, Karelia |  
    |   |   |   |   |  
    | St.
    Louis Encephalitis | Virus | Dermacentor variabilis | Middle & Western United States |  
    |   |   |   |   |      |