When do the coronavirus disease symptoms show up?

Symptoms may appear 2-14 days after exposure to the virus. Anyone can have mild to severe symptoms. People with these symptoms may have COVID-19: Fever or chills.
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What are some of the first symptoms of COVID-19?

Early symptoms reported by some people include fatigue, headache, sore throat or fever. Others experience a loss of smell or taste. COVID-19 can cause symptoms that are mild at first, but then become more intense over five to seven days, with worsening cough and shortness of breath.
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How long is the incubation period for COVID-19?

- The incubation period for COVID-19. Given that the incubation period can be up to 14 days, CDC recommends conducting screening testing at least weekly.
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How long are you contagious after being sick with COVID-19?


Most people with COVID-19 are no longer contagious 5 days after they first have symptoms and have been fever-free for at least three days.

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How long should I stay in home isolation if I have a COVID-19 infection?


Positive. The test detected the virus and you have an infection. Stay home for at least 5 days and isolate from others in your home.

Tell your close contacts. Wear a well-fitted mask when around others. If available, a N95 or KN95 respirator is recommended. Watch for symptoms.

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How long do I need to stay in isolation if I have symptoms of COVID-19 but my symptoms are better?


If you continue to have fever or your other symptoms have not improved after 5 days of isolation, you should wait to end your isolation until you are fever-free for 24 hours without the use of fever-reducing medication and your other symptoms have improved.

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What does a close contact of a person with COVID-19 need to do?

Contacts are encouraged to stay home and maintain social distance from others (at least 6 feet) until 14 days after their last exposure, in case they also become ill. They should monitor themselves by checking their temperature twice daily and watching for cough or shortness of breath. To the extent possible, public health staff should check in with contacts to make sure they are self-monitoring and have not developed symptoms. Contacts who develop symptoms should promptly isolate themselves and notify public health staff. They should be promptly evaluated for infection and for the need for medical care.
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What should I do if I've been exposed to a confirmed case of COVID-19 if my vaccine is not up-to-date?


Stay home and quarantine for at least 5 full days. Wear a well-fitted mask if you must be around others in your home. Do not travel. Even if you don't develop symptoms, get tested at least 5 days after you last had close contact with someone with COVID-19.

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How long can symptoms of COVID-19 last?


Acute COVID-19. Once symptoms appear, you have entered the acute stage. You may have fever, cough and other COVID-19 symptoms. Active illness can last one to two weeks if you have mild or moderate coronavirus disease, but severe cases can last months.

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What do I do if I have mild symptoms of COVID-19?

If you have milder symptoms like a fever, shortness of breath, or coughing: Stay home unless you need medical care. If you do need to go in, call your doctor or hospital first for guidance. Tell your doctor about your illness.
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Can I have COVID-19 if I have fever?

If you have a fever, cough or other symptoms, you might have COVID-19.
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What are some examples of mild illness of the coronavirus disease?


Mild Illness: Individuals who have any of the various signs and symptoms of COVID-19 (e.g., fever, cough, sore throat, malaise, headache, muscle pain, nausea, vomiting, diarrhea, loss of taste and smell) but who do not have shortness of breath, dyspnea, or abnormal chest imaging.

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How long does it take to recover from COVID-19?

Fortunately, people who have mild to moderate symptoms typically recover in a few days or weeks.
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What are some potential lingering symptoms after COVID-19?


For people who have had COVID-19, lingering COVID-19 heart problems can complicate their recovery. Some of the symptoms common in coronavirus “long-haulers,” such as palpitations, dizziness, chest pain and shortness of breath, may be due to heart problems — or, just from having been ill with COVID-19.

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Is it normal for COVID-19 symptoms to last more than 10 days?


People with post-COVID conditions can have a wide range of symptoms that can last more than four weeks or even months after infection. Sometimes the symptoms can even go away or come back again.

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When should you take a COVID-19 test if you were exposed to someone with COVID-19?


If you were exposed to someone with COVID-19, test yourself at least 5 days after your exposure. If you test negative for COVID-19, consider testing again 1 to 2 days after your first test.

If you are going to an indoor event or a gathering, test yourself immediately before or as close to the time of the event as possible. This is especially important before gathering with individuals at risk of severe disease, older adults, those who are immunocompromised, or people who are not up to date on their COVID

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Do I have to quarantine if I have been exposed to COVID-19?


If you come into close contact with someone with COVID-19, you should quarantine if you are not up to date on COVID-19 vaccines. This includes people who are not vaccinated.

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How soon after exposure should I get tested for COVID-19 if vaccinated?


Get tested 3-5 days after their first exposure. A person with COVID-19 is considered infectious starting 2 days before they develop symptoms, or 2 days before the date of their positive test if they do not have symptoms.

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Should I inform my close contacts that I have COVID-19?


Tell your close contacts that they may have been exposed to COVID-19. An infected person can spread COVID-19 starting 48 hours (or 2 days) before the person has any symptoms or tests positive. By letting your close contacts know they may have been exposed to COVID-19, you are helping to protect everyone.

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What should be done if a worker tests positive for the coronavirus?

  • Employers need to follow guidelines set by state and local authorities.
  • If an employee is confirmed to have COVID-19, employers should inform fellow employees of their possible exposure to COVID-19 in the workplace but must adhere to HIPAA guidelines.
  • Sick employees should follow the CDC recommendations and employers should consult with the local health department for additional guidance.
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Do I need to wear a mask and avoid close contact with others if I am vaccinated against COVID-19?

Generally, if you are up to date on your COVID-19 vaccinations, you do not need to wear a mask in outdoor settings. Check your local COVID-19 Community Level for recommendations on when to wear a mask indoors and additional precautions you can take to protect yourself from COVID-19. If you are immunocompromised or more likely to get very sick from COVID-19, learn more about how to protect yourself.

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How long should I quarantine after COVID-19 exposure if I am vaccinated?


Quarantine: If you have received all vaccine and booster doses recommended by CDC, you do not need to quarantine. You should wear a well-fitting mask around others for 10 days from the date of your last close contact with someone with COVID-19 (the date of last close contact is considered day 0).

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Can I recover at home if I have symptoms of COVID-19?


If you have a fever, cough, or other symptoms, you might have COVID-19. Most people have mild illness and are able to recover at home. If you are sick:

  • Keep track of your symptoms.
  • If you have an emergency warning sign (including trouble breathing), call 911.


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In what conditions does COVID-19 survive the longest?

Coronaviruses die very quickly when exposed to the UV light in sunlight. Like other enveloped viruses, SARS-CoV-2 survives longest when the temperature is at room temperature or lower, and when the relative humidity is low (<50%).
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How long does it usually take for your body to build up immunity after having a full specific COVID-19 vaccination scheme?

It takes a couple of weeks for your body to build immunity after vaccination.
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