⚠️

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.

Influenza, Seasonal (Fluvirin)2021

Influenza, Seasonal (Fluvirin) in 2021

174 adverse event reports (-63% vs 2020)

174

Reports

Deaths

Hospitalizations

ER Visits

Disabilities

← 2020 (464 reports)2022 (86 reports) →

2021 Reporting Summary

In 2021, 174 adverse event reports were filed for Influenza, Seasonal (Fluvirin) in VAERS. This represents 0.1% of all 119,695 reports for this vaccine.

Of these reports, 0 mentioned death, 12 involved hospitalization, 16 required ER visits, and 11 reported disability.

Compared to the average of 3,072 reports per year for this vaccine, 2021 was below average (-94%).

💡 What This Means

In 2021, reporting for Influenza, Seasonal (Fluvirin) was within typical ranges. As always, VAERS data reflects reports filed, not confirmed adverse events. Trends should be interpreted alongside vaccination volume and population health data.

All Years for Influenza, Seasonal (Fluvirin)

Year	Reports	Deaths	Hosp.
2026	363	4	15
2025	5,884	50	237
2024	4,962	33	198
2023	63	2	4
2022	86	0	3
2021 ← current	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

Understanding Yearly Data

•Spikes may reflect awareness: Years with unusual activity (e.g., pandemic) often see increased reporting.

•Dose volume matters: More vaccinations given in a year naturally leads to more reports.

•Reporting lag: Some events are reported months after they occur, so recent years may be incomplete.

Quick Facts

Reports:174

Deaths:0

Hospitalizations:12

% of Total:0.1%

Rank (by vol.):#34 of 37 years

Avg/year:3,072

Influenza, Seasonal (Fluvirin) Overview ← 2020 Reports 2022 Reports →35 Years of Reporting Compare Vaccines

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.