As a group (although not individually as this is not a longitudinal study), there was a moderate negative correlation with IL-1β in people who recovered from COVID-19 (r = −0.46, p = 0.005), while in people with lingering neurological sequelae, IL-1β did not decrease over time (r = 0.12, p = 0.395). This evidence concerns the gene IL1B and COVID-19.