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Trending Topics & Drug Approvals: September 2026

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September 24, 2026

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The American Academy of Pediatrics (AAP) published its 2026–27 recommendations for prevention of respiratory syncytial virus (RSV) disease in infants and children. RSV immunization continues to be recommended for infants younger than 8 months of age during their first RSV season, except for those with documented protection from maternal RSV vaccination received during pregnancy (a minimum of 14 days prior to delivery). Both Food and Drug Administration (FDA)-approved monoclonal antibodies nirsevimab (Beyfortus) and clesrovimab (Enflonsia) are recommended for prevention of RSV lower respiratory tract disease in these infants and are administered as a single dose for infants less than 8 months of age. The AAP does not list a preference for one of these products over the other when either product is appropriate for the infant. The AAP has expanded the high-risk criteria for RSV immunization in infants and children 8–19 months of age entering their second RSV season. Those considered eligible for prophylaxis during their second RSV season include: preterm children born at less than 32 weeks’ gestation; children with hemodynamically significant congenital heart disease, as well as those with anatomic pulmonary abnormalities or neuromuscular disorders that increase their risk for severe disease; and children with Down syndrome or other chromosomal differences who are at a higher risk of severe disease (consult the policy statement for a complete listing of high-risk groups). Beyfortus is the only product currently FDA-approved for prevention of RSV in children at high risk entering their second RSV season.  

AAP also published updated guidance on coronavirus disease 2019 (COVID-19) vaccination and recommends all infants and children 6–23 months of age receive a 2026–27 COVID-19 vaccine as long as contraindications do not exist. The following children and adolescents 2–18 years of age are recommended to receive a single dose of an age-appropriate 2026–27 COVID-19 vaccine, regardless of prior COVID-19 vaccination status: those who are at high risk of severe COVID-19, residents of long-term care facilities/congregate living facilities, those who have never been vaccinated, and those who have household contacts at high risk for severe COVID-19. A single dose of an age-appropriate COVID-19 vaccine should also be offered for children in this age group not included in the above risk groups whose parents/guardians desire vaccination. AAP recommends children 6 months through 18 years of age who are moderately to severely immunocompromised receive two or more COVID-19 vaccine doses, depending on prior vaccination status. The mRNA COVID-19 vaccines Comirnaty, Spikevax and mNexspike, as well as the adjuvanted COVID-19 vaccine Nuvaxovid, have received approval for the 2026–27 formula. The 2026–27 COVID-19 vaccine formula targets the XFG subvariant from the JN.1 lineage, aligning with FDA guidance and more closely matching currently circulating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants. 

Earlier this year, AAP published their 2026 recommended immunization schedule for children and adolescents in the United States who are 18 years of age or younger. Other medical organizations have also published their 2026–27 immunization recommendations for the upcoming respiratory virus season. The Infectious Diseases Society of America (IDSA) published guidelines on vaccines for prevention of COVID-19, influenza and RSV infections in immunocompromised patients. The American Academy of Family Physicians (AAFP) released their immunization schedule recommendations for the upcoming respiratory season, along with related resources. The American College of Obstetricians and Gynecologists (ACOG) published its first 2026 maternal immunization schedule, offering evidence-based vaccine recommendations for pregnant, postpartum and lactating individuals, as well as their infants, in June 2026.  

In mid-August 2026, the Centers for Disease Control and Prevention (CDC) released new data on vaccination coverage and exemptions among kindergartners for the 2025–26 school year. Compared with the prior year, the data demonstrated reduced rates for all reported vaccines. Vaccination coverage was 92% for the diphtheria, tetanus and acellular pertussis vaccine (DTaP) and 92.4% for the measles, mumps and rubella (MMR) vaccine and polio vaccine. Exemptions from one or more vaccines increased from 3.6% to 4.2%, with 24 states reporting exemption rates above 5%. Following publication of the vaccination data, the AAP issued a statement regarding these decreasing kindergarten vaccination rates. Certain diseases, such as measles, require community immunity rates above 95% to prevent transmission among susceptible populations. Even slight reductions in immunization coverage can increase the likelihood of outbreaks.

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