Article 2 antiviral activity 2 antiviral resistance drug efficacy 2 human 2 nonhuman 2 Anticoagulant 1 CD4 lymphocyte count 1 COVID-19 1 DNA strand 1 Drug Repositioning 1 HIV 1 Heparin 1 Human immunodeficiency virus infection 1 Humans 1 IC50 1 Lipid-based formulations 1 SARS-CoV-2 1 SARS-CoV2 1 Severe acute respiratory syndrome coronavirus 2 1 Spike Glycoprotein, Coronavirus 1 Spike protein 1 Sulfated polysaccharide 1 Topical delivery 1 Transmission-blocking 1 abacavir 1 adult 1 angiotensin converting enzyme 2 1 antiretroviral therapy 1 case report 1