Previous studies not involving HCWs revealed alterations in the laboratory index (including leukopenia, lymphocytopenia, increased alanine aminotransferase, increased aspartate aminotransferase, increased lactate dehydrogenase, and increased C-reactive protein and D-dimer) similar to those observed in our study 20, 26. This evidence concerns the gene CRP and Decreased total leukocyte count.