PMC:7039910 / 3239-3330
Annnotations
LitCovid-PD-GO-BP
{"project":"LitCovid-PD-GO-BP","denotations":[{"id":"T2","span":{"begin":18,"end":30},"obj":"http://purl.obolibrary.org/obo/GO_0000003"}],"text":" called the basic reproduction number, R09, and the actual average number of secondary case"}