Volume s1-29, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


Since Davis and Cox (1) first isolated the causative agent of Q fever from , several species of ticks have been incriminated in the epidemiology of this disease in various parts of the world. Investigations implicating the following species were reviewed by Kohls in 1948 (2): in Australia, and and ; and in the United States, and .

Recently Q fever has been demonstrated to occur sporadically in Panama (3, 4). However, there are no data available concerning the possible vectors in this area. We decided, therefore, to attempt experimental transmission by , a tick ideally suited for this purpose in Panama, due to its abundance and wide host range (5). The JD strain of , isolated locally (6), was employed as the infective agent and the guinea-pig as the experimental animal.


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