Early administration of the antiparasitic drug ivermectin didn't significantly shorten time to clinical improvement in 400 adults mildly ill with COVID-19, a clinical trial today in JAMA finds.Led by researchers from the Centro de Estudios en Infectologia Pediatrica in Cali, Colombia, the single-center, double-blind, randomized trial used random sampling of coronavirus-positive patients to identify inpatients and outpatients with mild COVID-19 within the first 7 days after symptom onset from Jul 15 to Nov 30, 2020.Median time to symptom resolution was 10 days in the 200 patients randomly assigned to receive ivermectin daily for 5 days, compared with 12 days in 198 patients receiving a placebo (interquartile range for both, 9 to 13 days;