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  • Title: Dominant-negative mutants as antiviral agents: simultaneous infection with the cold-adapted live-virus vaccine for influenza A protects ferrets from disease produced by wild-type influenza A.
    Author: Whitaker-Dowling P, Maassab HF, Youngner JS.
    Journal: J Infect Dis; 1991 Dec; 164(6):1200-2. PubMed ID: 1955719.
    Abstract:
    The attenuated cold-adapted strain of influenza A virus that is a candidate live-virus vaccine suppressed clinical disease in ferrets when given simultaneously with a virulent epidemic strain of influenza A virus. The cold-adapted virus effectively prevented disease, even when the epidemic strain was of a different subtype than the attenuated virus. In this case, ferrets given a mixed inoculum produced antibody to both subtypes in the absence of clinical disease, indicating that both viruses are replicating in the respiratory tract. These findings suggest the possibility of the development of a novel class of antivirals for influenza, namely a live virus that is a dominant-negative attenuated mutant that interferes with the replication of epidemic strains of virus.
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