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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.

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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. Varicella (Varivax)
  4. 2001
Varicella (Varivax)2001

Varicella (Varivax) in 2001

2,841 adverse event reports (-5% vs 2000)

Share
2,841
Reports
13
Deaths
148
Hospitalizations
1,603
ER Visits
30
Disabilities
← 2000 (2,990 reports)2002 (2,713 reports) →

2001 Reporting Summary

In 2001, 2,841 adverse event reports were filed for Varicella (Varivax) in VAERS. This represents 3.1% of all 93,126 reports for this vaccine.

Of these reports, 13 mentioned death, 148 involved hospitalization, 1,603 required ER visits, and 30 reported disability.

Compared to the average of 2,885 reports per year for this vaccine, 2001 was below average (-2%).

💡 What This Means

In 2001, reporting for Varicella (Varivax) 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 Varicella (Varivax)

YearReportsDeathsHosp.
20251,318345
20241,657933
20231,804124
20221,791221
20211,765433
20201,740348
20192,388579
20182,729356
20173,761371
20164,159583
20154,2371183
20143,566585
20132,810580
20123,08512115
20113,58215144
20104,0896158
20094,78021171
20086,0668171
20074,76611160
20063,23011102
20052,81812113
20042,790798
20031,9645110
20022,7132113
2001 ← current2,84113148
20002,9903124
19992,80114107
19982,00114116
19972,518668
19961,992377
1995689138

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:2,841
Deaths:13
Hospitalizations:148
% of Total:3.1%
Rank (by vol.):#13 of 31 years
Avg/year:2,885

Related Pages

Varicella (Varivax) Overview← 2000 Reports2002 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.