First respiratory syncytial virus season

This algorithm outlines our approach to RSV immunoprophylaxis during the infant's first RSV season. Refer to other UpToDate content for more details on our approach. Nirsevimab dosing is age- and weight-based; for additional details on nirsevimab and palivizumab dosing, refer to related UpToDate content and the Lexicomp drug monographs included with UpToDate.

BPD: bronchopulmonary dysplasia; RSV: respiratory syncytial virus.

* Refer to UpToDate topic for rare exceptions to immunoprophylaxis when RSV vaccine received ≥14 days prior to birth.

¶ Prematurity with BPD is defined as gestational age <32 weeks and supplemental oxygen requirement for at least the first 28 days after birth.

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First respiratory syncytial virus season