Health · official-source review · reviewed 2026-10-09
School and camp forms ask for dates that live on a card nobody can find, months after anyone remembers.
Compare recorded doses with the doses you believe are due, and list the gaps to ask a clinician about.
Parents and adults comparing their own records against the published schedules.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Find the immunization card, portal export, or school record.
Count the doses recorded for each vaccine you track.
Count the doses you believe are due from the published schedule.
Take the gap list to the clinician who keeps the official record.
Three doses are recorded and two are believed due, producing a two-item question list for the next visit.
Use your own source and details. The example is not a record about a real person or organization.
U.S. Centers for Disease Control and Prevention · reviewed 2026-10-09
What this source supports: The CDC publishes the recommended immunization schedules and records guidance.
Source limit: Your provider's records and your state's school or employer rules are the operative record for your situation.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide lists questions for your provider. It does not interpret schedules, give medical advice, or confirm immunity.
Your provider's records and your state's school or employer rules are the operative record for your situation.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Compare recorded doses with expected doses and produce a dated question list for your clinician.
This App compares counts you enter. It does not interpret the CDC schedule for your case, judge immunity, or alter records.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Compare recorded doses with expected doses and produce a dated question list for your clinician.
Free · no account · no upload
Open Vaccination Record Gap CheckerThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Vaccination Record Gap Checker. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.