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COVID-19 symptoms

Coronavirus novel 2019 - symptoms; 2019 Novel coronavirus - symptoms; SARS-Co-V2 - symptoms

COVID-19 is a highly infectious respiratory illness caused by a virus called SARS-CoV-2.

COVID-19 symptoms can range from mild to severe. Symptoms may include:

This is not a complete list of possible symptoms. Symptoms may change with new variants of the virus.

Some people may have no symptoms at all. Many have only some, but not all of the symptoms. Symptoms can also vary, depending on whether you are vaccinated.

Symptoms may develop within 2 to 14 days after you are exposed to the virus. Most often, symptoms appear around 5 days after exposure. However, you can spread the virus even when you do not have symptoms.

More severe symptoms that require seeking medical help right away include:

Older people and people with certain existing health conditions have a higher risk of developing severe illness and death. Health conditions that increase your risk include cancer, COPD, diabetes, heart disease and stroke, a weak immune system (immunocompromised), and many others.

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COVID-19
Thermometer temperature
Respiratory system
Upper respiratory tract
Lower respiratory tract

Considerations

Some symptoms of COVID-19 are similar to those of the common cold and the flu, so it can be hard to know for sure if you have the SARS-CoV-2 virus. But COVID-19 is not a cold, and it is not a flu.

The only way to know if you have COVID-19 is to be tested. If you want to be tested, you should contact your health care provider or use a home diagnostic test.

Most people with the illness have mild to moderate symptoms and recover fully. Whether you get tested or not, if you have symptoms of COVID-19, you should avoid contact with other people so you don't spread the illness.

Causes

COVID-19 is caused by the SARS-CoV-2 virus (severe acute respiratory syndrome coronavirus 2). Coronaviruses are a family of viruses that can affect people and animals. They can cause mild to severe respiratory illnesses.

COVID-19 spreads to people within close contact (about 6 feet or 2 meters). When someone with the illness coughs or sneezes, infectious droplets spray into the air. You can catch the illness if you breathe in or touch these particles and then touch your face, nose, mouth, or eyes.

Home Care

If you have COVID-19 or think you have it, stay at home and avoid contact with other people, both inside and outside your home, to avoid spreading the illness. You should do this right away and not wait for any COVID-19 testing.

To help treat the symptoms of COVID-19, the following tips may help.

When to Contact a Medical Professional

You should contact your provider right away:

Call 911 or the local emergency number if you have:

What to Expect at Your Office Visit

Your provider will ask about your symptoms, any recent travel, and any possible exposure to COVID-19. Your provider may take swab samples from the back of your nose and throat.

If your symptoms do not indicate a medical emergency, you can recover at home.

For more serious symptoms, you may need to go to the hospital for care.

References

Centers for Disease Control and Prevention website. COVID-19 testing: what you need to know. www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/testing.html. Updated September 25, 2023. Accessed March 5, 2024.

Centers for Disease Control and Prevention website. COVID-19 treatments and medications. www.cdc.gov/coronavirus/2019-ncov/your-health/treatments-for-severe-illness.html. Updated January 18, 2024. Accessed March 5, 2024.

Centers for Disease Control and Prevention website. Respiratory virus guidance. www.cdc.gov/respiratory-viruses/guidance/respiratory-virus-guidance.html. Updated March 1, 2024. Accessed March 5, 2024.

Centers for Disease Control and Prevention website. Symptoms of COVID-19. www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/symptoms.html. Updated October 26, 2022. Accessed March 5, 2024.

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Review Date: 2/22/2023  

Reviewed By: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. Editorial update 03/13/2024.

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