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Recombinant vaccinia virus vectors were constructed which expressed the major surface glycoprotein G of human respiratory syncytial (RS) virus. The biological activity of the G protein expressed from these vectors was assayed. Inoculation of rabbits with live recombinant virus induced high titers of antibody which specifically immunoprecipitated RS virus G protein and was capable of neutralizing RS virus infectivity. Immunization of mice by either the intranasal or the intraperitoneal route with recombinant virus that expressed only the G protein resulted in complete protection of the lower respiratory tract upon subsequent challenge with live RS virus.
Stott et al. (1986) studied this question.