Volume 16, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



This report deals with a 6-months' survey of rickettsial infections on the Ethiopian high plateau. It lists the serological results of tests of 304 human and 189 livestock blood specimens.

There were 18 isolations of rickettsial strains: 14 of from human blood, one from sheep blood, and two from batches of . One strain of originated from another human blood. Contrary to former findings, no could be isolated from human or animal blood.

All data show clearly, that by 1964, epidemic typhus had lost its overwhelming dominance and had become the least evident of the rickettsial agents.

In view of the absence of eschars in the majority of the tick-typhus patients, the possibility of airborne infections is discussed.


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