| COVID-19 | Coronavirus disease 2019 |
| ACE2 | Angiotensin-converting enzyme-2 |
| CCR5 | C-C Chemokine Receptor-5 |
| NPs | Nasopharyngeal swabs |
| RT-PCR | Reverse transcriptase polymerase chain reaction |
| EDTA | Ethylenediamine tetraacetic acid |
| HLA | Human leukocyte antigen |
| GWAS | Genome-wide association study |
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