ABSTRACT
After the zoonotic CoV epidemics of SARS (2003) and MERS (2012), SARS-COV-2 was appeared as the human positive sense RNA coronavirus's third and fatal strain that infect birds and a variety of animals and human. It is one of Coronaviridae family. It cause serious respiratory illness. A total number of 68 samples were involved in the current study, the suspected patients infection were confirmed by obtaining nasopharyngeal swab and subjected to PCR test in the molecular biological laboratories accredited by the Iraqi Ministry of Health. The samples were divided into two interval groups: the first period were collected during the first fourteenth day after infection and the second group interval after 15th to 28th of infection. NFAT concentration was tested by ELISA. The study results showed that the concentration of NFAT is increased in the first fourteen days then its concentration decreased at the second fourteen days with significance of (p≤0.03). © 2022 International Journal of Health Sciences.All rights reserved.