| NICU | Neonatal intensive care unit |
| COVID-19 | Coronavirus disease of 2019 |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| USA | United States of America |
| RT-PCR | Real-time polymerase chain reaction |
| AAP | American academy of pediatrics |
| CDC | Center for disease control |
| RSV | Respiratory syncytial virus |
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