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Am. J. Trop. Med. Hyg., 28(3), 1979, pp. 570-576
Copyright © 1979 by The American Society of Tropical Medicine and Hygiene

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Absence of Leukocytes Permissive to Dengue 2 Virus in the Acute Phase of Dengue Hemorrhagic Fever*

Nyven J. Marchette, Thomas O'Rourke, Robert McNair Scott, Suchitra Nimmannitya, Scott B. Halstead AND William H. Bancroft
Department of Tropical Medicine and Medical Microbiology, University of Hawaii School of Medicine, Honolulu, Hawaii 96816, Department of Virus Diseases, Walter Reed Army Institute of Research, Walter Reed Army Medical Center, Washington, D.C. 20012, and Children's Hospital, Bangkok, Thailand

Patients with primary dengue infection developed dengue 2 virus (D2V) permissive peripheral blood leukocytes (PBL) 2–3 weeks after infection. PBL from healthy individuals with dengue antibody were permissive to D2V in vitro, suggesting that immunologically mediated in vitro D2V permissiveness persists for a relatively long time after recovery from dengue infection. However, PBL obtained from second infection dengue hemorrhagic fever patients did not support D2V growth during the acute phase of illness but did so during convalescence. Leukocytes from dengue-immune patients with typhoid fever or non-dengue viral illness were permissive throughout both acute and convalescent phases of illness although there was a tendency for increased permissiveness during convalescence. Acute phase PBL from DHF patients synthesized and secreted dengue neutralizing antibody in culture. Absence of D2V replication in these cultures was strongly, but not completely, correlated with antibody production. Other immunological mechanisms, in addition to antibody, may be operating in vitro or in vivo during acute phase dengue hemorrhagic fever to alter the permissiveness of PBL to D2V infection.

Accepted for publication October 23, 1978.


* This investigation was supported in part by a grant from the Southeast Asia Regional Office, World Health Organization and Contract #DADA17-73-C-3083 from the U.S. Army Medical Research and Development Command.






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Copyright © 1979 by the American Society of Tropical Medicine and Hygiene.