# Dengue can reinfect even vaccinated people, new research clues

New research offers clues as to why dengue virus can still infect people who have been vaccinated, according to Nature. The findings could help explain breakthrough infections and inform work on more effective dengue vaccines. Dengue infects hundreds of millions of people each year, and vaccine protection has proven uneven across the four virus serotypes.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-03488-z) — 2026-10-28