Sources and verification

Every place this site sends you, and every fact it quotes, traces to an official source. This page lists each one and when it was last verified.

How we check

Each source goes through two stages. First we research it: we read the official page and record what it says. Then the site owner confirms it by opening the official page and clicking through. The date shown below is the owner's confirmation date, because the owner publishes this site and it shouldn't claim a check the owner didn't make.

  • A source that hasn't been confirmed in more than 90 days is due for review.
  • After 180 days, this page adds “verify before relying on this” next to it.

Reporting rules and web addresses change. The report buttons and download links on this site go through addresses we control, so when an official page moves, we fix it in one place. Always confirm requirements on the official site before you rely on them.

Where your report goes

VAERS (Vaccine Adverse Event Reporting System)

Run by
Co-managed by CDC and FDA, agencies of HHS
What it is
VAERS is the national early-warning system for vaccine safety, run by CDC and FDA. Anyone can report a health problem that happened after a vaccination, even if they are not sure the vaccine caused it. VAERS accepts reports without judging whether the vaccine was the cause.
Official source
Phone
1-800-822-7967
Email
vaersinfo@cdc.gov
Verification
Last verified: October 1, 2026

FDA Report a problem (newer online form)

Run by
U.S. Food and Drug Administration
What it is
FDA's newer online form for reporting harm, quality problems or misconduct involving FDA-regulated products. FDA's page says the form takes about 5 to 10 minutes and that it now includes MedWatch Online for drugs, biologics, medical devices and cosmetics. Its first screen asks whether you have a personal experience (for you or someone else) or insider information.
Official source
Phone
1-888-463-6332 (1-888-INFO-FDA)
Verification
Last verified: October 1, 2026

Health Canada: report a vaccine side effect (consumers)

Run by
Health Canada and the Public Health Agency of Canada
What it is
In Canada, vaccine side effects are generally reported through a health care provider (such as a doctor, nurse practitioner, nurse or pharmacist), who completes an adverse events following immunization (AEFI) form and sends it to the local public health unit. Health Canada's page for consumers also gives a direct route: people who cannot report through a health care provider, or who prefer to report directly, can send a report to Health Canada. A causal relationship does not need to be proven, and a report does not imply one. Some provinces use their own AEFI forms.
Official source
Verification
Last verified: October 7, 2026

MHRA Yellow Card scheme (United Kingdom)

Run by
Medicines and Healthcare products Regulatory Agency (MHRA), United Kingdom
What it is
The United Kingdom's Yellow Card scheme, run by the Medicines and Healthcare products Regulatory Agency (MHRA). Anyone can report a suspected problem with a medicine, vaccine, medical device (including software and apps), blood product or e-cigarette. MHRA's guidance says you do not have to prove the product caused the problem; a suspicion is enough.
Official source
Verification
Last verified: October 7, 2026

Therapeutic Goods Administration: report an adverse event (Australia)

Run by
Therapeutic Goods Administration (TGA), Australian Government
What it is
Australia's Therapeutic Goods Administration (TGA) takes reports of adverse events and safety problems with medicines, vaccines and medical devices. Consumers, health professionals and industry each have their own reporting page. A consumer can report a medicine or vaccine adverse event online directly, or ask a doctor, nurse practitioner, midwife or community pharmacist to help. Medical device incidents have a separate online form.
Official source
Verification
Last verified: October 7, 2026

Other official pages this site links to

HRSA VICP and CICP comparison

Run by
Health Resources and Services Administration (HRSA), HHS
What it is
HRSA's side-by-side comparison of the National Vaccine Injury Compensation Program (VICP) and the Countermeasures Injury Compensation Program (CICP). It compares the products each program covers, the types of injury covered, filing deadlines, and how claims are filed and decided. It is a reference page, not a place to report an adverse event.
Official source
Verification
Last verified: October 1, 2026

Quotations on this site

“Your report can save lives.”

Said by
U.S. Food and Drug Administration
Where
Report a problem to the FDA (opens in a new tab) (contact.fda.gov)
Context
First sentence of the introduction on FDA's Report a problem portal. It is FDA speaking about reporting to FDA, not a statement from VAERS. Only this sentence is quoted; the next sentence (about FDA's own actions) is deliberately left out.
Verification
Last verified: September 28, 2026

Checklists on this site

Your VAERS checklist

What it is
A checklist of what to gather before opening the VAERS form, built from the VAERS instructions page and VAERS's own checklist PDF. It separates what the form flags as essential from what is only helpful.
Built from
Verification
Last verified: October 1, 2026

Change log

  • October 7, 2026. Added verified reporting pathways for the United Kingdom, Australia, and Canada.