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.
4,962 adverse event reports (+999% vs 2023)(first full year of widespread reporting)
In 2024, 4,962 adverse event reports were filed for Influenza, Seasonal (Fluvirin) in VAERS. This represents 4.1% of all 119,695 reports for this vaccine.
Of these reports, 33 mentioned death, 198 involved hospitalization, 577 required ER visits, and 61 reported disability.
Compared to the average of 3,072 reports per year for this vaccine, 2024 was above average (+62%).
Year-over-year change: The large change from 2023 likely reflects a ramp-up in vaccination (e.g., new vaccine rollout or expanded eligibility) rather than a change in per-dose risk.
| Year | Reports | Deaths | Hosp. |
|---|---|---|---|
| 2026 | 363 | 4 | 15 |
| 2025 | 5,884 | 50 | 237 |
| 2024 ← current | 4,962 | 33 | 198 |
| 2023 | 63 | 2 | 4 |
| 2022 | 86 | 0 | 3 |
| 2021 | 174 | 0 | 12 |
| 2020 | 464 | 6 | 24 |
| 2019 | 2,659 | 7 | 80 |
| 2018 | 3,375 | 7 | 136 |
| 2017 | 4,752 | 9 | 169 |
| 2016 | 7,164 | 24 | 267 |
| 2015 | 9,396 | 29 | 396 |
| 2014 | 7,119 | 31 | 435 |
| 2013 | 7,441 | 34 | 450 |
| 2012 | 7,096 | 32 | 465 |
| 2011 | 7,172 | 49 | 553 |
| 2010 | 7,996 | 44 | 596 |
| 2009 | 5,746 | 43 | 436 |
| 2008 | 4,186 | 21 | 284 |
| 2007 | 3,395 | 28 | 241 |
| 2006 | 2,438 | 21 | 205 |
| 2005 | 2,840 | 32 | 212 |
| 2004 | 2,265 | 42 | 152 |
| 2003 | 1,948 | 59 | 174 |
| 2002 | 1,813 | 14 | 161 |
| 2001 | 1,504 | 28 | 130 |
| 2000 | 1,688 | 19 | 104 |
| 1999 | 1,569 | 17 | 138 |
| 1998 | 1,653 | 24 | 138 |
| 1997 | 1,707 | 25 | 156 |
| 1996 | 1,294 | 21 | 123 |
| 1995 | 1,117 | 25 | 140 |
| 1994 | 1,140 | 21 | 130 |
| 1993 | 410 | 15 | 68 |
| 1992 | 454 | 25 | 78 |
| 1991 | 245 | 12 | 51 |
| 1990 | 94 | 6 | 15 |
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.