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Respiratory syncytial virus (RSV) is an enveloped RNA virus that belongs to the Paramyxoviridae family within the Pneumovirus genus. The virus has a non-segmented, single stranded, negative sense genome that encodes 11 proteins.
The chapter has been updated to provide clearer definitions of the groups in whom palivizumab use is advised. Revisions to the chapter also take into account the revised formulation of Synagis® as a solution for injection.