Abstract
We developed a pyrosequencing protocol for monitoring of stability of attenuating mutations in the genome of vaccine reassortants based on master donor virus of Russian live attenuated influenza vaccine B/USSR/60/69. The developed protocol allows rapid and accurate assessment of mutations and can be used for analysis of genetic stability of reassortants during vaccine strain development and manufacturing, as well as genetic stability of vaccine isolates of influenza B virus during pre-clinical and clinical trials.
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