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Adverse effects of nirsevimab: limited data after one season of use in infants

 Adverse effects  Nirsevimab is a monoclonal antibody, authorised since 2023 for the prevention of infection with respiratory syncytial virus (RSV) in neonates and infants. Between September 2023 and April 2024, about 2 million children were exposed to nirsevimab worldwide. In September 2024, the French Health Products Agency (ANSM) published the report of a pharmacovigilance survey covering the period from September 2023 to April 2024.
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 ©Prescrire 1 January 2026

Source: "Adverse effects of nirsevimab: limited data after one season of use in infants" Prescrire Int 2026; 35 (277): 20-22. Subscribers only.

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"Nirsevimab (Beyfortus°)
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