Correlation of Vitamin D deficiency with chest X-rays severity scores and different inflammatory markers in severe and critical COVID-19 patients.

Objective: To determine the relationship between Vitamin D deficiency with Chest X-Rays severity score and Different Inflammatory Markers in Severe and Critical COVID-19 Patients.

Design: A cross-sectional study.

Setting: The study was conducted in COVID-19 isolation units at Mardan Medical Complex Teaching Hospital (MMCTH) and Bacha Khan Medical College, Pakistan.