I Built a Rabies Vaccine Schedule Calculator (Because People Still Miscalculate It) using Claudee

Rabies is almost always fatal once symptoms appear—but completely preventable with timely vaccination.

What surprised me is how often people (even in healthcare) still manually calculate vaccine schedules.

So I built a small tool to fix that:

👉 https://thezerowhisper.github.io/rabies-scheduler/

The Problem

Rabies post-exposure vaccination follows fixed schedules like:

• Day 0
  


• Day 3
  


• Day 7
  


• Day 14
  


• Day 28
  

But in real life:

• “Day 0” confuses people (it’s the first dose day, not exposure)
  


• Manual counting leads to off-by-one errors
  


• Different protocols exist
  


• Missed doses happen
  

The Solution

This tool:

• Takes a start date
  


• Instantly calculates all future doses
  


• Removes manual errors
  


• Works on mobile (no login required)
  

Tech Stack

• Vanilla JavaScript
  


• GitHub Pages
  


• No dependencies
  

Other Tools

• Growth Chart
  
  
  https://thezerowhisper.github.io/medical-calculators/growth-chart




• Milestones Tracker
  
  
  https://thezerowhisper.github.io/medical-calculators/milestones




• Full Hub
  
  
  https://thezerowhisper.github.io/medical-calculators

Final Thought

Sometimes the most useful tools are the simplest ones.

If this prevents even one mistake, it’s worth it.