Nonclinical phenotypic and genotypic analyses of a Phase 1 pediatric respiratory syncytial virus vaccine candidate MEDI-559 (rA2cp248/404/1030ΔSH) at permissive and non-permissive temperatures.

Abstract excerpt

MEDI-559 is a recombinant live attenuated intranasal RSV vaccine candidate currently being evaluated in 5 to <24 month old RSV seronegative infants for safety and immunogenicity. MEDI-559 and the previously tested rA2cp248/404/1030ΔSH both have 5 cold-passaged mutations, 3 temperature sensitive (ts) markers designated 248, 404, and 1030, and deletion of the SH gene that collectively contribute to their...

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