There is discussion on weather vaccination is a risk factor for MS or not. A research team from Munich reported that vaccination was not a risk factor for MS. On the contrary, they consistently suggested that vaccination be associated with a lower likelihood of being diagnosed with MS within the next 5 years(Hapfelmeier et al. 2019) .
Hapfelmeier, Alexander, Christiane Gasperi, Ewan Donnachie, and Bernhard Hemmer. 2019. “A Large Case-Control Study on Vaccination as Risk Factor for Multiple Sclerosis.” Neurology, July, e908–16. https://doi.org/10.1212/wnl.0000000000008012.