IL6 and susceptibility to pneumonia measurement: While in the cohort with suspected COVID-19 IL-6 values did not significantly differ between COVID-19 positive and negative patients regardless of the presence of pneumonia, it was precisely this value within the ICU-COVID-19 and Non-ICU-COVID-19 subgroup that was of high significance: COVID-19 patients admitted to an ICU had significantly higher IL-6 values than COVID-19 patients without intensive care treatment.