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FDA says Covid-19 antigen tests may be less sensitive to Omicron variant, but they're still an important tool
By Jamie Gumbrecht & Jen Christensen
Does a faint line on a lateral flow test mean you have Covid? What to do if you get one
By Phoebe Cornish
Why are there Covid test shortages in the UK?
By Laura Hughes, John Burn-Murdoch & Oliver Barnes
What does a positive lateral flow test result look like? Lateral flow test results, explained
By Liv Mcmahon
