PMC:7060038 / 38555-38740 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T132","span":{"begin":20,"end":26},"obj":"http://purl.obolibrary.org/obo/CLO_0001658"}],"text":"Reviewing data from active surveillance of passengers on cruise ships or repatriation flights, we estimate that up to half of cases show no detectable symptoms at the time of diagnosis."}

{"project":"LitCovid-sentences","denotations":[{"id":"T239","span":{"begin":0,"end":185},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Reviewing data from active surveillance of passengers on cruise ships or repatriation flights, we estimate that up to half of cases show no detectable symptoms at the time of diagnosis."}