Mediterranean Journal of Infection Microbes and Antimicrobials

Materials and Methods: Retrospective observational multi-centered cohort study.

Results: In total, 151 patients (mean age 61±17 years, 66% male) with COVID-19 pneumonia were included: 68 patients received combination therapy, ie, Lpv/r in addition to HQ, and 83 patients received only HQ. The patients in both groups were similar regarding the majority of baseline variables except for white blood cell count, procalcitonin, lactate dehydrogenase levels, intensive care unit (ICU) admission rates, which were significantly higher, and decreased oxygen saturation in the combination group. The mean duration of symptoms and hospital stay were 5.6±2.3 days and 12.7±9.4 days, respectively. Nearly 43%(n= 65) of patients were admitted to the ICU. Patients in the HQ monotherapy group had a shorter stay in hospital than those in the combination group (10 vs. 16 days, p< 0.005). The primary end points were 14-and 28-day mortality. Neither treatment group revealed significant differences with respect to 14-day and 28-day survival before and after propensity score matching. Age, hypertension, diabetes mellitus, chronic obstructive pulmonary disease, the Charlson Comorbidity Index (CCI), and ICU stay length were variable predictors of 14-day mortality, while CCI

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