Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.
24,509 adverse event reports (+55% vs 2022)
In 2023, 24,509 adverse event reports were filed for COVID-19 Bivalent (Moderna) in VAERS. This represents 57.1% of all 42,946 reports for this vaccine.
Of these reports, 266 mentioned death, 3,220 involved hospitalization, 2,099 required ER visits, and 328 reported disability.
Compared to the average of 10,550 reports per year for this vaccine, 2023 was above average (+132%).
High report volume: 24,509 reports in a single year is significant. This typically reflects large-scale vaccination campaigns rather than increased risk per dose. Without knowing total doses administered in 2023, raw report counts cannot indicate safety rates.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.