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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

⚠️

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.

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  3. Colorado

Colorado

CO41,161 total reportsRank #17 of 65 jurisdictions
Share
41,161
Total Reports
256
Deaths
1,955
Hospitalizations
6,530
ER Visits

About Colorado VAERS Data

Colorado (CO) has 41,161 adverse event reports in VAERS, representing 2.1% of all reports nationwide.

Of these, 256 mentioned death, 1,955 involved hospitalization, and 6,530 required emergency department visits.

With an estimated population of 5,839,000, Colorado has approximately 704.9 reports per 100,000 residents.

Top Vaccines Reported in Colorado

VaccineReportsDeathsHospitalizations
COVID1924,4501761,364
FLU32,30111140
VARZOS2,150563
MMR1,523376
VARCEL1,397334
DTAP1,341966
PPV1,338372
COVID19-21,203736
HEP1,1891679
FLU41,108734
TDAP1,076334
HEPA1,068642
HIBV1,03126102
IPV811649
MNQ577320
PNC13567739
OPV5132157
HPV9500019
MMRV46825
UNK456421

Understanding State-Level Data

•Population drives volume: More populous states naturally have more reports.
•State of reporter: Reports are attributed to where the reporter lives, which may differ from where vaccination occurred.
•Reporting culture varies: States with more awareness of VAERS or mandated reporting may have higher per-capita rates.

Quick Facts

Reports:41,161
Deaths:256
Hospitalizations:1,955
ER Visits:6,530
Share of Total:2.1%
Rank:#17 of 65 jurisdictions
Population:5,839,000
Reports per 100K:704.9

Explore Further

Top Vaccine: COVID19All StatesGeographic AnalysisCompare Vaccines

Related Analysis

Geographic Patterns Analysis →35 Years of Reporting Trends →COVID-19 Impact on VAERS →Serious Outcomes Analysis →Death Reports Deep Dive →

Data Source

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