Colds, flu, COVID-19 and RSV can all cause cough, sore throat and congestion, so you usually can’t tell them apart by symptoms alone. A rapid test can tell flu and COVID apart, which matters because antiviral treatment for both works best when started early.
How they typically differ
| Cold | Flu | COVID-19 | RSV | |
|---|---|---|---|---|
| Onset | Gradual | Sudden | Gradual or sudden | Gradual |
| Fever | Rare | Common, often high | Common | Sometimes |
| Body aches | Mild | Common, often severe | Common | Mild |
| Fatigue | Mild | Common, can be extreme | Common | Common |
| Runny or stuffy nose | Very common | Sometimes | Common | Very common |
| Loss of taste or smell | Rare | Rare | Possible | Rare |
| Wheezing | Rare | Sometimes | Sometimes | Common in higher-risk people |
These are patterns, not rules. Many people have mild or unusual symptoms.
When to get tested
- You have fever, body aches or sudden symptoms
- You are 65 or older, pregnant, or have a chronic condition or weakened immune system
- You live with or care for someone at higher risk
- You need to know for work, school or travel
We offer rapid flu and COVID-19 testing at Mega Health Rx, with results while you wait. See COVID vaccine and testing in Forest Hills.
Why early treatment matters
Prescription antivirals for flu and COVID-19 work best when started within the first few days of symptoms, especially for higher-risk people. If you test positive, contact your doctor promptly, and ask our pharmacist about how the medications work and interact with what you already take.
Symptom relief
Rest, fluids, and OTC pain and fever relievers help most people. Check with a pharmacist before combining cold products — many contain the same ingredients, which makes it easy to take too much acetaminophen by accident.
Get care right away if you have
- Trouble breathing or shortness of breath
- Chest pain or pressure
- New confusion or trouble staying awake
- Bluish lips or face
- Signs of dehydration, or symptoms that improve then get worse
Prevention
Vaccines are available for flu, COVID-19 and, for eligible adults, RSV. Walk in at 64-51 108th Street.
Frequently asked questions
How can I tell if I have a cold, the flu or COVID?
Symptoms overlap, so a test is the reliable way to know. Flu often starts suddenly with fever and body aches; colds are milder and gradual.
Where can I get a rapid flu or COVID test in Forest Hills?
At Mega Health Rx, 64-51 108th Street, with results while you wait.
Why should I get tested early?
Antiviral treatments for flu and COVID-19 work best when started within the first few days of symptoms.
This article is for general educational purposes and does not replace individualized medical advice. Speak with your pharmacist, physician or other healthcare professional about what is right for you.
Switch in about a minute
Tell us where you fill now and we handle every call. Free delivery anywhere in NYC, or pick up at 64-51 108th Street.