How long is COVID contagious?

Most people are contagious 1–2 days before symptoms and up to 8–10 days after. A provider can review your case and prescribe Paxlovid when appropriate online.

Also called: COVID isolation · when can I stop isolating · COVID contagious period

Medically reviewed by Dr. Ikechukwu Ogbu, MD
MD · Board-Certified, Internal Medicine · Last reviewed

Seek urgent care or the ER if you have:

  • Symptoms that are sudden, severe, or rapidly worsening
  • High fever (over 103°F / 39.4°C) that doesn't respond to treatment
  • Chest pain, trouble breathing, fainting, or confusion
  • Signs of dehydration — dizziness, dark urine, unable to keep fluids down
  • Symptoms in someone who is pregnant, immunocompromised, or over 65

What how long is covid contagious? could be

The most common causes a clinician considers. This isn't a diagnosis — it's the differential a provider works through with you.

COVID-19

Commonly relevant when someone is researching "how long is covid contagious?" — worth reviewing with a clinician who knows your history.

Typical workup

What a clinician usually orders or asks about when someone presents with how long is covid contagious?.

  • Focused history: timing, triggers, severity, and prior treatments related to "how long is covid contagious?"
  • Targeted physical exam of the involved system
  • Rule-in / rule-out workup for the most likely causes: COVID-19
  • Baseline labs when relevant (CBC, CMP, TSH, vitamin D, lipid panel) to personalize the plan

When to see a clinician

  • You have an underlying condition (heart, kidney, liver, thyroid, pregnancy) that could interact with the plan
  • You're already on prescription medications and want to check for interactions
  • Symptoms are affecting sleep, work, or daily life and haven't improved with lifestyle changes
  • You want personalized guidance based on labs rather than generic advice

Conditions this often points to

Common questions