PMC:7029452 / 766-895 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T8","span":{"begin":46,"end":88},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"med on 24 January, the first cases in Europe. Contact tracing was immediately initiated. Five contacts were evaluated as at low r"}