IL18 and COVID-19: A ‘cytokine storm’ profile is found in most severely influenced COVID-19 patients, which is distinguished by high amounts of pro-inflammatory cytokines; raised levels of interleukins (IL-18, IL-1β, IL-2, IL-6); tissue factor (TNF-α); granulocyte-colony stimulating factor (GCSF); and many chemokines (protein-10 a monocyte chemo-attractant) [5].