“…The paper by Mohammad Zobair Wardak et al, entitled Prevalence of Hypertension and Diabetes in Severe COVID-19: A Cross-Sectional Study from Single Center, Kabul, is really interesting to be read and review for further discussion. 1 A similar study topic was previously reported by Deravi et al 2 in a systematic review, which also showed that the most frequent comorbidities in patients with severe COVID treated in the intensive care unit (ICU) were diabetes mellitus and hypertension. Diabetes can cause neutrophils and T cells to operate less well, which can lead to secondary infections by downregulating the humoral and innate immune systems.…”