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Story at a glance Some people have said they have COVID-19 symptoms but test negative on rapid antigen tests. This may happen when it’s still early in the infection period and there’s not ...
If you were exposed to COVID, test at least 5 full days after exposure. If you test negative using an at-home test, repeat the test again in 48 hours. If you still test negative, wait 48 more ...
Take precautions, test again 48 hours later, and if the second test is negative, take a third test 48 hours later. If you have no COVID symptoms without any known exposure , you probably don’t ...
Delta (B.617.2) First identified in India in late 2020, the delta variant soon spread across the globe. It became the dominant variant of SARS-CoV-2 until the emergence of omicron in December 2021.
Just like other COVID-19 strains that have gained dominance in the U.S. over the last year — JN.1, HV.1, EG.5 aka Eris, and XBB.1.16 or Arcturus — the FLiRT variants part of the omicron family.
NBC News medical fellow Dr. Akshay Syal breaks the down the differences between the rapid and PCR Covid tests, as well as how they fair against the omicron variant.
We don’t know yet,” Dr. Russo says. “But if you’re up to date on all of those shots you’re eligible for, the risk of developing severe disease and hospitalization is low.”
U.S. health officials say rapid tests can detect all variants of COVID-19, but early data suggests they may be less sensitive at picking up Omicron.