CRP and susceptibility to pneumonia measurement: The LoS in hospital for patients with COVID-19 was significantly associated with blood inflammatory markers, with the strongest association for levels of peak neutrophils, WBC, and CRP levels (p < 0.001 for all measures) (Table 2, Supplementary Fig. 1), while only peak neutrophil levels were significantly associated with LoS for patients with pneumonia but not WBC or CRP levels (p = 0.003, 0.655, 0.144 respectively; Supplementary Fig. 2).