“…Similar to previous studies ( Chakinala et al, 2021 , Dalekos et al, 2021 , Emami et al, 2020 , Jordan et al, 2020 , Kyriazopoulou et al, 2021 , Li et al, 2021 , Rydyznski Moderbacher et al, 2020 ) , we demonstrated that older age and underlying comorbidities - including severe obesity, chronic heart and respiratory disease and additional chronic disorders - significantly affected the phenotype of SARS-CoV-2 infection. Furthermore, we observed that patients carrying the B allele (rs1800450) of the MBL2 gene also displayed worsened clinical presentation, as these patients more frequently required hospitalization because of pneumonia necessitating supplemental oxygen administration.…”