PMC:7796058 / 2583-2810 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T18","span":{"begin":0,"end":227},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"When sharing the same indoor space, close contact can cause viruses to spread via air, objects, or floor, even after two to three days if the recommended protective equipment is not used, or disinfection is not carried out [4]."}