How did jorah get greyscale?

Related questions

1. How did Jeor Mormont join the Night's Watch?
2. Was Ned Stark a king?
3. Who GoT Ned Stark killed?
4. How much do the actors get paid in Game of Thrones?
5. How did jorah dishonor his house?
6. How much is Charles Dance worth?
7. Is there a 4th series of Jack Taylor?
8. How did Jeor Mormont become Lord Commander?
9. Why did Jorah's father take the black?
10. How much is Jack Gleeson worth?

Tags

1. #infectious
2. #lesion
3. #instance
4. #proximity
5. #thrones
6. #stoneman
7. #untouched
8. #greyscale
9. #close
10. #developed
11. #jorah
12. #tyrion
13. #unaffected
14. #contact
15. #those
16. #known
17. #stonemen
18. #affected
19. #within
20. #despite
21. #season