How Long Does the Flu Last? Length, Duration, and What to Expect

At EZMed Urgent Care, we frequently evaluate flu symptoms and help patients manage recovery safely.

How Long Is the Flu Contagious?

Most people with the flu are contagious for about 5–7 days.

Typical contagious timeline:

• 1 day before symptoms begin

• Up to 5–7 days after symptoms start

• Children, older adults, and immunocompromised patients may be contagious longer

Even if you start feeling better, you may still be able to spread the virus.

Flu Symptom Timeline: Day by Day

Days 1–3: Sudden Onset

Symptoms often begin abruptly and may include:

• Fever and chills

• Body aches

• Headache

• Fatigue

• Sore throat

• Cough

This is usually the worst phase of the flu.

Days 4–7: Gradual Improvement

• Fever typically resolves

• Body aches lessen

• Energy slowly returns

• Cough and congestion may continue

Most people begin to feel significantly better by the end of this phase.

Days 8–14: Lingering Symptoms

Some symptoms may persist, including:

• Dry cough

• Mild fatigue

• Nasal congestion

A lingering cough or tiredness is common and does not necessarily mean you are still contagious.

How Long Does Flu Fatigue Last?

Fatigue can last 1–2 weeks or longer, even after other symptoms resolve. Returning to work or school too soon can prolong recovery.

Rest and hydration are essential during this phase.

Does Antiviral Treatment Shorten the Flu?

Yes. Antiviral medications (such as oseltamivir) can:

• Shorten symptom duration by 1–2 days

• Reduce symptom severity

• Lower the risk of complications

Antivirals work best when started within 48 hours of symptom onset.

When to Visit Urgent Care for the Flu

You should seek medical care if:

• Symptoms are severe or worsening

• Fever lasts more than 3–4 days

• You have difficulty breathing or chest pain

• You are pregnant, over 65, or immunocompromised

• A child is not improving or appears lethargic

• You need flu testing or antiviral treatment

Early evaluation can shorten illness and prevent complications.

Flu Care at EZMed Urgent Care

At EZMed Urgent Care, we provide:

• Rapid flu testing

• Antiviral prescriptions when appropriate

• Symptom management guidance

• Return-to-work or school notes

• Care for adults and children

We help you recover safely and reduce the risk of spreading illness to others.

How to Recover Faster from the Flu

To support recovery:

• Rest as much as possible

• Drink plenty of fluids

• Use fever reducers as directed

• Avoid strenuous activity until fully recovered

• Stay home until fever-free for at least 24 hours