Pre-Exposure Rabies Immunization with Human Diploid Cell Vaccine: Decreased Antibody Responses in Persons Immunized in Developing Countries

Kenneth W. Bernard Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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Daniel B. Fishbein Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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Kirk D. Miller Office of Medical Services, United States Peace Corps

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Robert A. Parker Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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Sheila Waterman United States Peace Corps, Nairobi, Kenya

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John W. Sumner Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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Frances L. Reid Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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Bruce K. Johnson Virus Research Centre, Kenya Medical Research Institute, Nairobi, Kenya

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Arthur J. Rollins United States Department of State, Nairobi, Kenya

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Charles N. Oster Clinical Research Centre, Kenya Medical Research Institute and U.S. Army Medical Research Unit, Nairobi, Kenya

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Lawrence B. Schonberger Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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George M. Baer Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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William G. Winkler Division of Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia, USA

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DOI:
https://doi.org/10.4269/ajtmh.1985.34.633
Volume/Issue:
Volume 34: Issue 3
Page(s):
633ā€“647
Restricted access
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In November 1982, a U.S. Peace Corps volunteer in Kenya completed pre-exposure rabies prophylaxis with a standard 3 dose intradermal (ID) series of human diploid cell rabies vaccine (HDCV). In May 1983, she was bitten by a dog and died of rabies 3 months later. An initial investigation revealed that the patient, as well as 9 of 11 others immunized at the same time, had no rabies antibody titers (<1:5). We therefore instituted investigations into the immunogenicity of pre-exposure HDCV both in the United States and in developing countries. A serosurvey revealed unexpectedly low rabies titers in both Peace Corps volunteers and others immunized in developing countries. Antibody titers measured 2ā€“3 weeks after ID immunization were compared in 9 groups totaling 271 persons in the United States and Kenya. There was no statistically significant difference in antibody titers in the 6 U.S. groups immunized from 1980ā€“1984 (P > 0.15); however, groups immunized in the United States had significantly higher titers than a group of Kenyan nationals (P ā‰¤ 0.0001), and the Kenyans had significantly higher titers than 2 Peace Corps groups immunized in Kenya (P ā‰¤ 0.0001). No single hypothesis proposed (laboratory error, vaccine potency, vaccination technique, or specific immune suppression) accounted for the observed differences. Although we cannot fully explain the poor response to HDCV, it is probably due to multiple factors. We conclude that persons immunized with ID pre-exposure HDCV in developing countries should have rabies antibody titers determined to ensure their seroconversion; for persons immunized in the United States, such titers need not be routinely determined.

Author Notes

Present address: International Health Program Office, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia 30333.

Present address: Division of Parasitic Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia 30333.

Copyright:
Copyright Ā© 1985 by The American Society of Tropical Medicine and Hygiene 1985
Accepted:
07 Feb 1985
|
Published Online:
May 1985
Cover The American Journal of Tropical Medicine and Hygiene
The American Journal of Tropical Medicine and Hygiene
Print ISSN:
0002-9637
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