| ARI | Acute respiratory infection |
| PCR | Polymerase chain reaction |
| mNGS | Metagenomic next-generation sequencing |
| ARDS | acute respiratory distress syndrome |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| COVID-19 | Coronavirus disease 2019 |
| RSV | Respiratory syncytial virus |
| HAdV | Human adenovirus |
| HBoV | Human bocavirus |
| HPIV | Human parainfluenza virus |
| HMPV | Human metapneumovirus |
| EV-D68 | Enterovirus D68 |
| HRV | Human rhinoviruses |
| NAATs | Nucleic acid amplification tests |
| CMV | Cytomegalovirus |
| EBV | Epstein–Barr virus |
| HCoV | Human coronavirus |
| HHV | Human herpes virus |
| HSV-1 | Herpes simplex 1 |
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