Ads by Google
How long do you have to self-quarantine for after being exposed to someone with COVID-19?
Should I get tested after a close contact with someone who has COVID-19 if I am fully vaccinated?
How long is the incubation period for COVID-19?
Should I get tested for COVID-19 if I was in close contact with a positive case?
What should I do if I have been exposed to someone with COVID-19?
Anyone who has had close contact with someone with COVID-19 should quarantine for 14 days after their last exposure to that person, except if they meet the following conditions:
Someone who has been fully vaccinated and shows no symptoms of COVID-19 does not need to quarantine. However, fully vaccinated close contacts should:
Wear a mask indoors in public for 14 days following exposure or until a negative test result.
Get tested 5-7 days after close contact with someone with suspected or confirmed COVID-19.
Get tested and isolate immediately if experiencing COVID-19 symptoms.
Can someone test negative and later test positive on a viral test for COVID-19?
Yes, it is possible. You may test negative if the sample was collected early in your infection and test positive later during this illness. You could also be exposed to COVID-19 after the test and get infected then. Even if you test negative, you still should take steps to protect yourself and others. See Testing for Current Infection for more information.
What should I do if I’ve been exposed to a person with COVID-19 and I have fully recovered from a COVID-19 infection in the previous 90 days?
Someone who tested positive for COVID-19 with a viral test within the previous 90 days and has subsequently recovered and remains without COVID-19 symptoms does not need to quarantine. However, close contacts with prior COVID-19 infection in the previous 90 days should:
• Wear a mask indoors in public for 14 days after exposure.
• Monitor for COVID-19 symptoms and isolate immediately if symptoms develop.
• Consult with a healthcare professional for testing recommendations if new symptoms develop.
When should you get tested for the coronavirus disease?
- Fully vaccinated people should be tested 5–7 days after their last exposure.
- People who are not fully vaccinated should get tested immediately when they find out they are a close contact.
What is a false positive rate for a virus test?
What are consequences of a false negative COVID-19 test?
How long can you test positive for COVID-19?
People who have recovered from COVID-19 can continue to test positive for up to 3 months after their infection.
How accurate are COVID-19 self tests?
Is the PCR test for COVID-19 accurate?
What are the chances of a false positive COVID-19 lateral flow test?
What to do if you test positive for COVID-19 on a home test?
What does a negative COVID-19 test result mean?
What are the differences between the nasal swab and saliva tests for COVID-19?
Samples for COVID-19 tests may be collected through a long swab that is inserted into the nose and sometimes down to the throat, or from a saliva sample.
The saliva test is easier to perform — spitting into a cup versus submitting to a swab — and more comfortable. Because a person can independently spit into a cup, the saliva test does not require interaction with a healthcare worker. This cuts down on the need for masks, gowns, gloves, and other protective equipment, which has been in short supply.
Either saliva or swab samples may be used for PCR tests, which detect genetic material from the coronavirus. Swab samples can also be used for antigen tests, which detect specific proteins on the surface of the coronavirus.
Can you recover at home if you have a mild case of COVID-19?
Does a negative result rule out the possibility of COVID-19?
What should a symptomatic person who has received a negative COVID-19 antigen test result do?
Should I isolate if I have COVID-19 symptoms but my test is negative?
• If you have symptoms of COVID-19:
– You may have received a false negative test result and still might have COVID-19. You should isolate away from others. Contact your healthcare provider about your symptoms.
What is the false negative rate from COVID-19 antibody test results?
When are antigen tests the better option to screen for COVID-19?
What is a positive antibody test for COVID-19?
A positive antibody test result can help identify someone who has had COVID-19 in the past or has been vaccinated against COVID-19. Antibody tests are not used if you have symptoms of COVID-19 or for diagnosing a current case of COVID-19.