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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.

  1. Home
  2. Vaccines
  3. Vaccine Not Specified
  4. 1998
Vaccine Not Specified1998

Vaccine Not Specified in 1998

21 adverse event reports

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21
Reports
0
Deaths
1
Hospitalizations
8
ER Visits
0
Disabilities
1999 (65 reports) →

1998 Reporting Summary

In 1998, 21 adverse event reports were filed for Vaccine Not Specified in VAERS. This represents 0.1% of all 29,669 reports for this vaccine.

Of these reports, 0 mentioned death, 1 involved hospitalization, 8 required ER visits, and 0 reported disability.

Compared to the average of 1,022 reports per year for this vaccine, 1998 was below average (-98%).

💡 What This Means

In 1998, reporting for Vaccine Not Specified 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 Vaccine Not Specified

YearReportsDeathsHosp.
20266316
20251,40717219
20241,6231489
20232,94636183
20225,86153353
20219,612215702
20201,865774
20191,76720142
2018365111
201729507
201616604
201514113
20149311
201311905
201214104
201112717
201020729
200925217
2008214214
2007314114
200617804
200514907
200415124
200312936
200216958
20017716
2000113211
19996504

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:21
Deaths:0
Hospitalizations:1
% of Total:0.1%
Rank (by vol.):#0 of 28 years
Avg/year:1,022

Related Pages

Vaccine Not Specified Overview1999 Reports →35 Years of ReportingCompare Vaccines

Data Source

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