Infect Immun. 1973 January; 7(1): 119-122
Copyright © 1973 American Society for Microbiology. All Rights Reserved.
1 Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
ABSTRACT
Volunteers inoculated nasopharyngeally with liver A2/AA/6/60 virus grown in primary bovine kidney cell cultures at 25 C were asymptomatic but developed significant serum and respiratory secretory antibody responses. Viruses were not recovered from these volunteers who had a low or moderate level of prevaccination antibody titers.
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