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Am. J. Trop. Med. Hyg., 30(3), 1981, pp. 555-559
Copyright © 1981 by The American Society of Tropical Medicine and Hygiene

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Tick Transmission of Babesia Microti to Rhesus Monkeys (Macaca Mulatta)*

Trenton K. Ruebush, II, Joseph Piesman, William E. Collins, Andrew Spielman AND McWilson Warren
Vector Biology and Control Division, Bureau of Tropical Diseases, Centers for Disease Control, Public Health Service, U. S. Department of Health and Human Services, Atlanta Georgia 30333, and Department of Tropical Public Health, Harvard University School of Public Health, Boston, Massachusetts 02115

To determine whether Ixodes dammini is capable of transmitting Babesia microti to primates, infected nymphal ticks were allowed to feed on five Macaca mulatta. The monkeys were then followed for at least 60 days with daily thick blood smears for evidence of infection. Patent B. microti parasitemia developed in four of the five animals. Prepatent periods were 13, 18, 20, and 28 days. Maximum parasitemia ranged from 83 to 7,068 organisms/mm3 blood. Splenectomy 15–17 months after exposure to ticks resulted in recurrences of parasitemia in three of the four infected monkeys.

Accepted for publication November 8, 1980.


* Address reprint requests to: Dr. Trenton K. Ruebush II, Bureau of Tropical Diseases, Centers for Disease Control, Atlanta, Georgia 30333.






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Copyright © 1981 by the American Society of Tropical Medicine and Hygiene.