The master's thesis at the College of Pharmacy at the University of Basrah researched, The Impact of Serum Zinc Level on Severity Pattern of SARS-CoV-2 in Basrah province, Iraq, by student Haneen Abdul-Amir Haji

The thesis dealt with studying the level of zinc in Corona patients and comparing it to a healthy group, in addition to finding the relationship between zinc level and the severity of infection with Corona disease.
The thesis concluded that the level of zinc in Corona patients was significantly lower than that of the healthy group, and that patients whose zinc level was lower than normal showed a higher level of severity of infection, longer days of recovery, and a greater percentage of patients who required hospitalization.