
Vaccines, Journal Year: 2024, Volume and Issue: 13(1), P. 26 - 26
Published: Dec. 31, 2024
Background: Respiratory syncytial virus (RSV) infections usually cause mild, cold-like symptoms in most people, but are a leading infectious disease causing infant death and hospitalization can result increased morbidity mortality older adults at-risk individuals. Pfizer has developed Abrysvo®, an unadjuvanted bivalent recombinant protein subunit vaccine containing prefusion-stabilized fusion (F) proteins representing RSV A B subgroups (RSVpreF). It is the only approved for both maternal immunization to protect infants active of (≥60 years) 18–59-year-old individuals with high-risk conditions prevention disease. Methods: Nonclinical safety studies, including repeat-dose toxicity (RDT) study rats combined developmental reproductive (DART) rabbits, were conducted support early clinical development. Study designs parameters evaluated these studies consistent principles practices as outlined relevant regulatory guidelines. RSVpreF vaccine, or without Al(OH)3, was administered intramuscularly (IM) at 2× human dose animals studies. Results: Locally tolerated, reversible, inflammatory responses injection sites draining lymph nodes observed typical findings following vaccination. No effect RSVpreF, on female fertility embryo–fetal postnatal survival, growth, development DART study. In robust immune antigens observed, especially Al(OH)3 formulation. Conclusions: well-tolerated locally systemically any adverse effects endpoints.
Language: Английский