In several studies and models, the impairment of IL-17A and IL-17F has been shown to facilitate infection by different pathogens such as Klebsiella pneumoniae, Francisella tularensis, Pseudomonas aeruginosa, Citrobacter rodentium, Candida albicans, or Staphylococcus aureus [3]. This evidence concerns the gene IL17A and infection.