CORD-19:4abc50cfc81265083d4cb2aed0a493bb704d0b5b / 54547-54788 JSONTXT

{"project":"CORD-19-Sentences","denotations":[{"id":"TextSentencer_T274","span":{"begin":0,"end":241},"obj":"Sentence"},{"id":"T12476","span":{"begin":0,"end":241},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Most of the concerns about the use of live-attenuated virus-based vaccines come from the assumption regarding the potential risk of residual virulence and toxicity, instability, reversion to pathogenic wild-types, or recombination in nature."}