Despite the controversies swirling around the June meeting of the U.S. CDC’s Advisory Committee for Immunization Practices (ACIP), the reconstituted committee delivered good news to Merck & Co. Inc. when it voted 5-2 June 26 to recommend that infants younger than 8 months who are not protected by maternal vaccination get one dose of a monoclonal as they head into their first respiratory syncytial virus season.

The June 25-26 meeting of the U.S. CDC’s Advisory Committee for Immunization Practices (ACIP) will be anything but business as usual. In wiping the slate clean just two weeks before the panel was to meet, Health and Human Services Secretary Robert Kennedy made sure of that.

With the U.S. FDA’s approval of Enflonsia (clesrovimab) to prevent respiratory syncytial virus (RSV) infection lower respiratory tract disease in newborns and infants, Merck & Co. Inc. steps into a space of competition and regulatory shifts. The preventive, long-acting monoclonal antibody (MAb) will take its place in the market alongside the blockbuster Beyfortus (nirsevimab) from Sanofi SA and Astrazeneca plc. The MAb for pediatric use brought in about $1.77 billion in 2024.

Enanta Pharmaceuticals Inc. hit the mark that Wall Street hoped for, and details rolled out in top-line results from the first-in-pediatrics phase II study evaluating once-daily, oral zelicapavir in hospitalized and non-hospitalized children aged 28 days to 36 months with respiratory syncytial virus (RSV).

Wall Street promptly began trying to weigh the compound’s marketplace odds after Merck & Co. Inc. detailed positive data from the phase IIb/III trial known as MK-1654-004 with clesrovimab, an investigational prophylactic monoclonal antibody designed to protect infants from respiratory syncytial virus (RSV) disease during their first RSV season. The results, plus interim findings from the ongoing phase III experiment dubbed MK-1654-007 were offered during IDWeek 2024 in Los Angeles.

Investigators at Wuxi No. 2 Peoples Hospital and affiliated organizations conducted studies to identify novel effective biomarkers for early-stage pediatric respiratory syncytial virus (RSV) infection (EPR).