Related Clues:
- Common cause for sick days
- Word before shot or season
- Source of unwelcome strains
- Chicken ___ (kid's ailment)
- Annual vaccine target
- It might give you the chills
- Winter weakener
- Minor ailment
- Seasonal ailment
- Certain bug
- Seasonal shot's enemy
- Focus of a yearly shot
- Bug that thrives in the winter
- Cold-weather illness
- 1918 worldwide health threat