- Yeast Infection, Vaginal — Candidiasis
- Yellow Book
- Yellow Fever Vaccination
- Yellow Fever Virus Infection
- Yersinia enterocolitica Infection — Yersiniosis
- Yersinia pestis Infection — Plague
- Yersinia pseudotuberculosis Infection — Yersiniosis
- Yersiniosis
- Young Worker Safety and Health
- Youth Health — Adolescent Health
- Youth Risk Behavior Surveillance System (YRBSS)
- Youth Violence
It's never too early or too late to work towards being the healthiest you.