IL18 and COVID-19: Furthermore, immune factors such as interleukin-6 (IL-6), interleukin-8 (IL-8), interleukin-32 (IL-32), interleukin-10 (IL-10), interleukin-18 (IL-18), interleukin-37 (IL-37), interleukin-38 (IL-38), interleukin-36 (IL-36), and interleukin-1 (IL-1) have been implicated in COVID-19 severity and pregnancy outcomes [11-20].