KNY infection AU

So there are skinwalkers roaming around the forest and people are getting infected characters Tanjiro: Not infected Nezuko: Not infected Zenitsu: Not infected Inosuke: Not infected Kanae: Not infected Shinobu: Not infected Kanao: Not infected Aoi: Not infected Genya: Not infected Sanemi: Not infected Obanai: Not infected Mitsuri: Not infected Giyu: Not infected Gyomei:Not infected Muichiro: Not infected Tengen and his three wives: Not infected Rengoku: Not infected So Shinobu and Lady Tamayo are making antidotes that doesn't make people get infected Good luck...