Vaccine confidence doesn't just erode through misinformation — it erodes through silence.
The whooping sound of Whooping Cough (Pertussis), also known as The 100-Day Cough, has vanished from collective memory.

The 100-Day Alarm uses that silence against itself: a mysterious voice note circulates in parent groups with the whooping sound hidden in the background. Parents forward it out of love, unknowingly spreading the very sound of a vaccine gap. When 21GRAMS reveals the truth, fear becomes awareness — every anxious share becomes a medical act.

Now that you've heard it, you can finally forget it again.