Worldwide prevalence Worldwide, MS organizations have estimated that 2.3 million individuals are living with MS.
Improving reporting You can help improve the accuracy of MS prevalence reporting by joining the Society in our collective efforts to advocate for the establishment of a national registry that would track MS prevalence in the US by joining the Society’s activist network.
Definitions Prevalence = the number of people living with a diagnosis of MS within a given period of time. Incidence = the number of people NEWLY diagnosed with MS within a given period of time.