RSV Vaccine Shortage: Thousands of Additional Doses for Infants Fast-Tracked for Distribution

By Lucia Paula , Parent Herald Nov 18, 01:46 am

The CDC is urgently addressing the shortage of nirsevimab, a crucial RSV immunization for infants, by distributing over 77,000 additional doses nationwide. This move comes as part of a collaborative effort to reduce the impact of respiratory syncytial virus (RSV) infections, which are the primary cause of hospitalizations in infants.

Nirsevimab, also known as Beyfortus, is a long-acting monoclonal antibody injection designed to protect this vulnerable age group from severe RSV-related illnesses.

The CDC's swift distribution of these extra doses will occur through its Vaccines for Children Program and commercial channels, demonstrating the agency's commitment to mitigating the RSV crisis.

Dr. Patrizia Cavazzoni, the director of the FDA's Center for Drug Evaluation and Research, emphasized the urgency of making this preventative option available to affected babies and young children, acknowledging the significant strain RSV places on families and the healthcare system.

Beyfortus: A Critical Shield Against RSV Infections in Infants

As the nation braces for the winter season, typically the peak time for respiratory viruses, public health officers express concern over the shortage of nirsevimab.

Lori Tremmel Freeman, CEO of the National Association of County and City Health Officials, highlights the critical need for equal access and supply to meet the high demand for this immunization.

In July, the FDA approved Beyfortus, and the CDC recommended it for children under 8 months old entering their first RSV season, as well as for certain high-risk toddlers up to age 2. Nirsevimab is supplied in single-dose prefilled syringes of 50 or 100 milligrams.

However, the current shortage has forced the CDC to recommend prioritizing 100-milligram doses for infants at the highest risk of severe RSV disease, while the guidelines for using 50-milligram doses remain unchanged.

RSV, a virus that infects the lower lungs, causes significant health risks for infants by filling their lungs with mucus and obstructing their airways. The CDC has noted an uptick in RSV cases since September, with hospitalization rates for children 4 and younger increasing.

Addressing the distribution challenges, Dr. Chris DeRienzo, a neonatologist and chief physician executive for the American Hospital Association, points out the "mismatch" between the goal of administering nirsevimab to newborns and its distribution through the Vaccines for Children program. Most birthing hospitals are not part of this program, creating a barrier to effective immunization at birth.

Future Pathways: Evolving Strategies for Wider Access to Crucial RSV Immunization

The American Hospital Association is concerned about the program's format, which suits outpatient pediatric care but not birthing hospitals that administer only a few immunizations to newborns. As of now, no state has more than 50% of its birthing hospitals participating in the program.

Looking ahead, DeRienzo hopes for new pathways to access nirsevimab, possibly by evolving components of the Vaccines for Children program. He emphasizes the need to learn from this season's challenges, including distribution mismatches, supply issues, and cost hurdles. Nirsevimab costs about $500 per immunization, compared to the much cheaper hepatitis B vaccine given at birth.

As the healthcare community navigates this challenging RSV season, the focus is on maximizing the distribution of nirsevimab and learning from current obstacles to improve access in future seasons.