Flu Shot vs. Cold vs. COVID: How to Tell the Difference This Fall
Every fall, pharmacies and clinics across Canada get the same question: "Is this a cold, the flu, or COVID?" The symptoms can overlap enough to cause genuine confusion — but the distinction matters.
Common Cold
- Gradual onset — symptoms develop slowly over 1–2 days
- Runny or stuffy nose is usually the main symptom
- Mild sore throat and sneezing
- Low or no fever in adults
- Rarely causes serious complications in healthy adults
Influenza (Flu)
- Sudden onset — you can feel fine at noon and miserable by dinner
- High fever (38–40°C) is common
- Significant body aches and chills
- Severe fatigue and weakness
- Can lead to serious complications, especially in high-risk groups
COVID-19
- Variable onset — can be gradual or sudden
- Loss of taste or smell (less common with newer variants)
- Fever, cough, fatigue
- Shortness of breath in some cases
- Test with a rapid antigen test if you're unsure
The Best Way to Protect Yourself: Vaccinate
There's no vaccine for the common cold, but there are effective vaccines for both flu and COVID-19 — both available at The Boardwalk Pharmacy in Waterloo with no appointment needed.
When Should You See a Doctor?
See a doctor or go to urgent care if you experience: difficulty breathing, chest pain, confusion, severe vomiting, or if a high fever doesn't improve with medication.
Need advice? Ask our pharmacist. Walk in or call (519) 578-3000.