PMC:7068161 / 4414-4536 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T33","span":{"begin":0,"end":122},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Entry screening is not effective because the majority of cases would be in the incubation period and therefore undetected."}