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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. Janssen

Janssen

81,533 total reports3.1% market share
81,533
Total Reports
2,676
Deaths
10,511
Hospitalizations
1
Vaccines

About Janssen

Janssen has 81,533 adverse event reports in VAERS, representing 3.1% of all manufacturer-attributed reports.

Of these reports, 2,676 mentioned death and 10,511 involved hospitalization.

Janssen produces 1 vaccine tracked in VAERS. Their moderate report volume reflects their market presence in specific vaccine categories.

Vaccines by Janssen

VaccineReportsDeathsHospitalizations
COVID-1976,3442,2428,890

Understanding Manufacturer Data

•Market presence matters: More reports often reflect more doses distributed, not necessarily more safety issues.
•Reporting varies: Newer vaccines and those under heightened scrutiny tend to have higher reporting rates.
•All manufacturers meet FDA standards: Safety and efficacy requirements apply equally to all approved vaccines.

Top Vaccines

1. COVID-1981,533

Explore Further

Top Vaccine: COVID19All ManufacturersManufacturer LandscapeCompare Vaccines

Data Source

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