The U.S.A.; as represented by the Secretary; Department of Health and Human Services
发明人:
Peter L. Collins,Ursula J. Buchholz,Cindy Luongo
申请号：
US16877277
公开号：
US20200283740A1
申请日:
2020.05.18
申请国别(地区):
US
年份:
2020
代理人:
摘要：
Provided herein are novel recombinant respiratory syncytial viruses (RSV) having an attenuated phenotype that contain mutations in the M2-2 open reading frame that interfere with the expression of the M2-2 protein. The M2-2 mutations may be present in combination with mutations at other loci. Using methods described herein, combinations of mutations are provided to achieve desired levels of attenuation. The recombinant RSV strains described here are suitable for use as live-attenuated RSV vaccines. Also provided are polynucleotide sequences of the described viruses, as well as methods for producing and using the viruses.
