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Due to the known anti‐inflammatory and antiviral effects of zinc, 25(OH)D, and vitamin B12, in this study, we explored the association between serum levels of these micronutrients in coronavirus disease 2019 (COVID‐19) patients at the time of admission and the clinical outcomes. This study was carried out on 293 patients with COVID‐19, who were hospitalized at Imam Hassan hospital (Bojnourd, Iran). We collected demographic data, clinical characteristics, values of serum biochemical parameters in the first week of admission, and clinical outcomes from electronic medical records. We also measured serum levels of zinc, 25(OH)D, and vitamin B12 within 3 days of admission. Of the 293 hospitalized, the median age was 53 years, and 147 (50.17%) were female. Thirty‐seven patients (12.62%) were admitted to the intensive care unit (ICU), and forty‐two (14.32%) died. We found that the serum levels of zinc …