HIF1A and COVID-19: Gene GLUT1 was also induced in SARS-CoV-2-infected Vero E6 cells at 24 h.p.i. The increased levels of the LDH protein and the induction of the expression of HIF-1α and GLUT1 in the blood samples of the hospitalized COVID-19 patients, are in agreement with several studies highlighting that severe clinical manifestations of COVID-19 are linked with induction of anaerobic glycolysis [88,89,90], and generation of hypoxia-like conditions [91,92].