Most parents don't know what's planned at their child's next well-visit. Learn how to prepare →

What's New

New updates and improvements to VaxCalc

See What’s Shaping Your Vaccine Decisions

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Your Decision Profile now appears on your Dashboard, showing your biggest concerns and what is shaping your decisions most right now.

This is the first time VaxCalc can reflect your own decision-making back to you.

As you add, remove, or reprioritize concerns, your profile changes with you. Over time, what matters to you will increasingly shape the research, briefings, and guidance VaxCalc brings forward.

This is just the beginning.

Disease Risk Added to Your Decision Profile

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Today we added a new Disease Risk section to your Decision Profile.

Many parents aren't only asking questions about vaccines—they're also trying to understand the diseases themselves.

You can now organize concerns such as:
  •  Severity of the disease 
  •  Likelihood of exposure 
  •  Risk at your child's age 
  •  Whether exposure can be reduced 
  •  Treatment options 
  •  Disease risk vs. vaccine risk 
  •  A specific disease you're concerned about 

Your Decision Profile is becoming a more complete picture of how you think, allowing 
VaxCalc to better personalize research, briefings, and guidance around the questions that matter most to your family.


Your Decision Profile

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Every family approaches vaccine decisions differently.

Some parents are most concerned about ingredient safety. Others are thinking about previous reactions, school requirements, or questions they still haven't been able to answer.

Rather than treating every family the same, VaxCalc now begins by understanding what matters most to your family.

Your new Decision Profile lets you prioritize the concerns that are most important to you. Over time, it will increasingly shape how VaxCalc supports your decisions—from research and well-visit preparation to AskVaxCalc and future features.

We're just getting started.

Today you'll see the beginning of this throughout VaxCalc. As the platform grows, your Decision Profile will become one of the primary ways we personalize your experience.

Our commitment is simple:

We'll keep improving VaxCalc so that what matters most to you stays front and center in every decision.

Your Decision Profile

Added more well-visits: 18 months thru 10 years

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We've added Well-Visit Guides for appointments from 18 months through 10 years old. Parents can now prepare for these visits in advance, review vaccine recommendations individually, and document their decisions before the appointment. This is part of our ongoing effort to make VaxCalc a complete well-visit decision platform.

Attend or skip that well-visit?

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You can now record whether your family:

✓ Attended the well-visit
🛡 Skipped the well-visit

Your selection will appear on your child's dashboard, making it easier to remember the path your family chose over time.

This is especially helpful if you're using Well-Visit Guides as a visual timeline of your child's development, including uploaded photos.

As always, VaxCalc is designed to support informed decision-making by parents. Whether you attended or skipped a particular well-visit, what matters is that the choice was yours.

Attend or skip?



📸 Add Your Child's Photos to Well-Visit Guides

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Crew asked for it, so we built it.

You can now upload your own child's photo to any Well-Visit Guide.

It's a small change that creates a surprisingly different experience.

Add photos across the timeline and watch your child grow from a newborn into a teenager and eventually an adult—all on a single page.

The guide doesn't change.

But the experience does.

Suddenly it's not a series of visits.

It's your kid's life.

Open any Well-Visit Guide to try it.

After-Visit Monitoring Based on Vaccine Injury Tables and Package Insert Data

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Today I completed an important addition to VaxCalc.

VaxCalc now integrates the U.S. Government Vaccine Injury Table with adverse event information reported in FDA-approved vaccine package inserts.

DTaP, PCV and flu shot - what you should watch for when all given at once



Most vaccine safety information is presented one vaccine at a time.

Real well visits often involve multiple interventions.

That creates a practical problem for parents:

If several vaccines are given during the same appointment, what should you watch for when you get home?

The new Combined Effects section helps answer that question.

Select the vaccines being considered and VaxCalc will:

  • identify reactions reported across the selected vaccines
  • highlight conditions recognized by the U.S. Vaccine Injury Compensation Program
  • show the time windows in which those conditions are known to occur
  • reveal where effects overlap across multiple interventions

    For example, depending on the vaccines selected, you may see conditions such as:

  • Anaphylaxis
  • Vasovagal Syncope
  • SIRVA
  • Guillain-Barré Syndrome
  • Encephalitis
  • Encephalopathy

    along with the vaccines associated with those conditions and the recognized time periods in which they may occur.

Why We Built This


One of VaxCalc's core purposes is helping parents prepare for real-world well visits.

Preparation does not end when the appointment is over.

Parents should know:

  • what was given
  • what decisions were made
  • what reactions are commonly reported
  • what conditions deserve closer attention
  • what to monitor afterward

This feature brings together information that is normally scattered across package inserts, government documents, and multiple vaccine-specific resources.

Important Clarification


The Vaccine Injury Table is not a complete list of all possible adverse events.

It is a legal and administrative framework used by the Vaccine Injury Compensation Program.

Likewise, package inserts contain adverse events reported during clinical trials and post-marketing surveillance, but do not establish causation for every reported event.

VaxCalc presents these sources together so parents can more easily understand what has been reported, what has been recognized, and what to watch for after a visit.

What To Do


Visit one of your Well Visit Guides.

Select the vaccines being considered.

Then explore the Combined Effects section to see how common reactions and recognized injury-table conditions change as additional vaccines are added.

This is an early step toward a larger goal:

VaxCalc helps parents evaluate each vaccine decision individually, then understand the combined effects of the choices being considered for a well visit.

—Chris