PMC:7014668 / 370-574 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T2","span":{"begin":173,"end":174},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"ould not be detected, depending on incubation period, sensitivity of exit and entry screening, and proportion of asymptomatic cases. Airport screening is unlikely to detect a sufficient proportion of 2019"}