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Most people who have coronavirus disease 2019 (COVID-19) recover completely within a few weeks. But some people — even those who had mild versions of the disease — continue to experience symptoms after their initial recovery.

These people sometimes describe themselves as "long haulers" and the conditions have been called post-COVID-19 syndrome or "long COVID-19." These health issues are sometimes called post-COVID-19 conditions. They're generally considered to be effects of COVID-19 that persist for more than four weeks after you've been diagnosed with the COVID-19 virus.

Older people and people with many serious medical conditions are the most likely to experience lingering COVID-19 symptoms, but even young, otherwise healthy people can feel unwell for weeks to months after infection. Common signs and symptoms that linger over time include:

• Fatigue
• Shortness of breath or difficulty breathing
• Cough
• Joint pain
• Chest pain
• Memory, concentration or sleep problems
• Muscle pain or headache
• Fast or pounding heartbeat
• Loss of smell or taste
• Depression or anxiety
• Fever
• Dizziness when you stand
• Worsened symptoms after physical or mental activities