As the coronavirus’s highly-virulent Omicron variant drives a fresh spike in infections and snarls year-end plans, many are turning to at-home rapid tests to decide what they can and can't do. Though ...

Loss of smell is a symptom unique to the coronavirus. It manifests itself differently than the congested, runny nose-type anosmia typical of a common cold, and it can linger for more than a week in ...