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Antibiotics

Beyond vaccines, AstraZeneca and Sanofi introduced nirsevimab, a prophylactic monoclonal antibody with 75% efficacy against RSV cases in infants under one year. Europe approved nirsevimab in November 2022, and the FDA followed suit in July 2023. Merck's clesrovimab, a similar monoclonal antibody, is in late-stage trials.