In this interim analysis, researchers evaluated the effect irrigating the nose and sinuses had on reducing symptoms related to SARS-CoV-2. They found, “The effect of nasal irrigation on symptom resolution was substantial, with nasal congestion and headache resolving a median of 7 to 9 days earlier in the intervention groups. Our analysis suggests that nasal irrigations may shorten symptom duration and may have potential as a widely available and inexpensive intervention to reduce disease burden among those affected.”