In addition to their important role in autoinflammatory conditions such as inflammatory bowel disease [12], psoriasis [13] or autoimmune encephalitis (EAE) [14], CCL20 and CCR6 were detected in some bacterial infections, e.g., parodontitis [15] and Helicobacter pylori gastritis [16], [17], and they were shown to play a role in the generation and maintenance of the adaptive immune defense against bacteria in the gut [18]. This evidence concerns the gene CCL20 and bacterial infectious disease.