• Moderna's norovirus vaccine candidate, mRNA-1403, is undergoing a Phase 3 clinical trial, Nova 301, with results expected as early as late 2025 or 2026.
• The trial aims to enroll 25,000 adults to assess the vaccine's safety and efficacy against multiple norovirus genotypes, including those not directly targeted by the vaccine.
• Norovirus is a highly contagious virus causing vomiting and diarrhea, leading to significant morbidity and mortality, especially among young children and older adults.
• Moderna's mRNA technology offers a potential advantage in rapidly adapting the vaccine to address evolving norovirus strains, with the goal of reducing symptom severity and hospitalizations.