B19

B19 or B-19 may refer to:

• B19 (New York City bus), serving Brooklyn
• Douglas XB-19, an experimental bomber aircraft
• Parvovirus B19, the virus that causes fifth disease
• Caro–Kann Defence ECO code in chess
• Patient B-19
• Boron-19 (B-19 or ¹⁹B), an isotope of boron
• LNER Class B19, classified B2 until 1945

1. Parvovirus B19
2. Fifth disease
3. Chevron B19
4. Volvo Redblock Engine
5. Caro–Kann Defence
6. Bone marrow suppression
7. Parvoviridae
8. Polymyalgia rheumatica
9. A Life in the Day of B19: Tales of the Tower Block
10. Edema
11. Mark Madoff
12. Reticulocytopenia
13. List of chess openings
14. Maculopapular rash
15. Pathogen
16. Derek Jeter
17. Biddeford Municipal Airport
18. Emma Hayes
19. Hand, foot, and mouth disease
20. Honor 20