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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. Rotavirus (Rotarix)
  4. Injection site mass
Rotavirus (Rotarix)×Injection site mass

Injection site mass Reports for Rotavirus (Rotarix)

#151 most reported symptom for this vaccine

19
Reports
0
Deaths
2
Hospitalizations
0
Mortality Rate
%
10.5
Hosp. Rate
%

Injection site mass and Rotavirus (Rotarix)

Injection site mass has been reported 19 times in association with Rotavirus (Rotarix) vaccination in VAERS. This represents 0.5% of all 3,859 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 2 involved hospitalization (10.5%).

Injection site mass is the #151 most frequently reported symptom for Rotavirus (Rotarix) out of 653 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 19 reports of Injection site mass after Rotavirus (Rotarix) 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 mass occurred after vaccination, not that the vaccine caused it.
•Background rates: Injection site mass 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

Respiratory tract congestion19 reportsGastrooesophageal reflux disease19 reportsIntestinal obstruction19 reportsRespiratory viral panel19 reports

Quick Facts

Reports:19
Deaths:0
Hospitalizations:2
% of Vaccine:0.5%
Rank:#151 of 653

Related Pages

Rotavirus (Rotarix) OverviewInjection site mass (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.