Nirsevimab: A Review

Howard Balbi1

  • 1Department of Pediatrics, Good Samaritan University Hospital, West Islip, New York, USA.

Insights

New RSV prevention tools offer hope for infants and older adults. Nirsevimab, a long-acting antibody, is recommended for infants, while vaccines are available for older adults and pregnant women.

Area of Science:

  • Pediatrics
  • Immunology
  • Public Health

Background:

  • Respiratory syncytial virus (RSV) is a leading cause of infant hospitalization in the U.S.
  • RSV causes severe lower respiratory tract infections across all age groups.
  • Recent advancements in 2023 have introduced novel prevention strategies.

Purpose of the Study:

  • To review the recent FDA approvals of new RSV prevention tools.
  • To highlight the role of nirsevimab, a monoclonal antibody, for infant protection.
  • To discuss recommendations for nirsevimab administration in infants and at-risk children.

Main Methods:

  • Review of FDA approvals and recommendations from ACIP and AAP.
  • Focus on nirsevimab (Beyfortus™) for RSV prevention in vulnerable populations.
  • Analysis of vaccine approvals for older adults and pregnant women.

Main Results:

  • FDA approved three new RSV prevention tools in 2023.
  • Nirsevimab (Beyfortus™) approved for infants and young children.
  • Vaccines (Arexvy™ and Abrysvo™) approved for adults 60+ and pregnant women.

Conclusions:

  • Nirsevimab is recommended for all infants under 8 months and high-risk children aged 8-19 months.
  • New RSV vaccines and monoclonal antibodies significantly advance prevention efforts.
  • These tools aim to reduce severe RSV disease and hospitalizations in infants and the elderly.

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