WASHINGTON, United States (AFP) — Rapid Covid home tests are more likely to give a false negative with the heavily-mutated Omicron variant compared to earlier strains, the US Food and Drug Administration (FDA) said Tuesday. The news comes as the country is facing a massive surge in cases that experts say is being under-captured as a result of a testing crunch, with long wait times for the more accurate PCR tests, and home kits in […]