A method and system of reducing the likelihood of an inflammatory disease developing by providing a mucosal adhesive strip to a subject, with the strip provided with at least one of a plurality of agents effective to hinder the growth of spirochetes bacteria in a subject's oral cavity. In certain embodiments, an effective amount of Prevotella intermedia is provided to decrease the incidence of periodontitis and to reduce the progression of Alzheimer's disease. In still other embodiments, the likelihood that a subject will suffer from Alzheimer's disease is reduced by administering via local gingival application to a subject that has been diagnosed with periodontitis an effective amount of an antibiotic effective to kill spirochetes bacteria residing on the subgingival tooth area of the subject.