While bacteria evolution can't be reversed, the antibiotic resistance usually have a cost to maintain (the fitness cost¹) and without the evolutive pressure cau

While bacteria evolution can't be reversed, the antibiotic resistance usually have a cost to maintain (the fitness cost¹) and without the evolutive pressure cause by the antibiotic, bacteria without those costly genes will eventually dominate. 1) https://www.nature.com/articles/nrmicro2319 https://www.nature.com/articles/nrmicro2319