There are two main types of viral tests: nucleic acid amplification tests (NAATs) and antigen tests. A positive antigen test was more likely after a symptomatic infection (361 of 564, 64.0%) than after an asymptomatic infection (35 of 165, 21.2%) (p<0.001). "The way that we've started to frame it, and I think many others have, is that if you're positive, you particularly need to take this very seriously.". Isolate for at least 5 full days after symptom onset and until fever free for at least 24 hours. Indeed, the CDC found, "Between 5 and 9 days after symptom onset or after initial diagnosis with SARS-CoV-2 infection, 54% of persons had positive SARS-CoV-2 antigen test results.". Positive test results using a viral test (NAAT, antigen or other tests) in persons with signs or symptoms consistent with COVID-19 indicate that the person has COVID-19, independent of vaccination status of the person. What are the implications for public health practice? You should let your local care team know you tested positive for COVID-19 using an at-home antigen test. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. If it's been less than three months since you had COVID-19, the CDC advises using an antigen test instead of a PCR test. If you do not, your results may be less likely to correctly indicate whether you have COVID-19 or not. "The best thing we have are these rapid antigen tests.". In this study conducted after SARS-CoV-2 infection during emergence of the Omicron variant, the majority of persons with follow-up testing had a positive antigen test result 59 days after symptom onset, or, among asymptomatic persons, after the initial positive diagnostic test. Health departments say if you test positive, dont keep testing repeatedly in search of a negative test, Amler said. These cookies may also be used for advertising purposes by these third parties. Get advice about what to do if you have tested positive for COVID-19.
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