Related Clues:
- Target of an annual shot
- Illness that creates instability when unknown factor is added
- Viral infection was airborne, according to radio report
- Yearly vax target
- Annual vax target
- January illness
- Illness reportedly went quickly
- Kind of shot given annually
- Fever is a symptom of this
- Winter bug?
- Illness worse than a cold
- Bug prevalent in winter
- Sickness for many in winter
- Target of an annual vax
- Influenza, more commonly