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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. Injection site erythema
Varicella (Varivax)×Injection site erythema

Injection site erythema Reports for Varicella (Varivax)

#3 most reported symptom for this vaccine

11,724
Reports
0
Deaths
124
Hospitalizations
0
Mortality Rate
%
1.1
Hosp. Rate
%

Injection site erythema and Varicella (Varivax)

Injection site erythema has been reported 11,724 times in association with Varicella (Varivax) vaccination in VAERS. This represents 12.6% of all 93,126 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 124 involved hospitalization (1.1%).

Injection site erythema is the #3 most frequently reported symptom for Varicella (Varivax) out of 2205 total symptoms.

Disclaimer: VAERS reports describe events that occurred after vaccination but do not establish that the vaccine caused the event. Many reported symptoms may be coincidental or related to underlying conditions.

What This Means

Seeing 11,724 reports of Injection site erythema after Varicella (Varivax) vaccination may seem alarming, but context is critical.

The mortality rate among these reports is very low at 0.00%, suggesting most cases are non-fatal.

Important Context

•Association, not causation: These reports show Injection site erythema occurred after vaccination, not that the vaccine caused it.
•Background rates: Injection site erythema may occur naturally at baseline rates in the population, unrelated to vaccination.
•Anyone can report: VAERS accepts reports from anyone — patients, parents, healthcare providers — without requiring medical verification.
•Denominator missing: VAERS counts reports, not rates per dose. Without knowing how many doses were given, raw counts can be misleading. Learn more →

Similarly Ranked Symptoms

No adverse event14,907 reportsPyrexia13,162 reportsRash9,781 reportsInfection7,683 reports

Quick Facts

Reports:11,724
Deaths:0
Hospitalizations:124
% of Vaccine:12.6%
Rank:#3 of 2205

Related Pages

Varicella (Varivax) OverviewInjection site erythema (All Vaccines)Why Raw Numbers MisleadTop Symptoms Analysis

Data Source

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