COVID-19 Associated Mucormycosis and Risk Factors: A Case-Control Study from Turkey
Mucormycosis, a fatal fungal infection, has increased during the COVID-19 pandemic and posed significant challenges for clinicians.
Our research focused on identifying the clinical traits of patients with COVID-19-associated mucormycosis (CAM), comparing them with a control group, and identifying risk factors for the development of CAM.
Our study was conducted on 39 CAM patients and 78 control patients from September 2020 to October 2022 at a tertiary education center and regional hospital. The control group was selected blindly in a 1:2 ratio among patients who did not develop mucormycosis, were hospitalized due to COVID-19, and were either discharged or deceased. The control group was matched to the case group regarding age and hospitalization date. To test potential risk factors for CAM, we performed a binary logistic regression analysis. The variables included in the multivariate binary logistic regression model were gender, diabetes, cumulative steroid dose (dexamethasone equivalent), duration of steroid treatment, and tocilizumab/anakinra treatment.
In our study, 39 patients were diagnosed with CAM. The average age of the patients was 66 ± 11.5 years. Of the patients, 54.7% (n = 64) were male, with a statistically significantly higher proportion of men in the CAM group (74.4% vs. 44.9%, P = 0.003). The diabetes rate was 51.3% (n = 60) among all patients, and it was higher in the CAM group (69.2% vs. 42.3%, P = 0.006). Regarding in-hospital mortality, the rate was higher in the CAM group (56.4% vs. 14.1%, P < 0.001). The median length of stay in the hospital was 37 days for the CAM group and 10 days for the control group (P < 0.001). The cumulative steroid dose was elevated in the CAM group compared to the control group (191 ± 61.4 mg vs. 117 ± 69.8 mg, P < 0.001). The duration of steroid treatment was 16.5 ± 6.2 days in the CAM group, compared to 9.8 ± 4.7 days in the control group (P < 0.001). Among CAM cases, paranasal involvement was the most common (56.4%), followed by rhino-orbital involvement (33.3%).
In binary logistic regression analysis, male gender (OR, 3.9; 95% CI, 1.4 – 11.3), diabetes mellitus (OR, 4.4; 95% CI, 1.5 – 12.4), more than ten days of steroid use (OR, 5.5; 95% CI, 1.3 – 22.4), and tocilizumab/anakinra use (OR, 0.23; 95% CI, 0.06 – 0.8) were identified as risk factors for the development of CAM (p values 0.011, 0.005, 0.019, and 0.020, respectively).
Male gender, diabetes mellitus, and steroid use for more than ten days were identified as positive risk factors, while tocilizumab/anakinra use was identified as a negative risk factor for the development of CAM.
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