There is RRMS SPMS PPMS and PRMS the least common is PRMS
Yes you can, it’s like bacteria that spreads
There are, however, many microorganisms in the human microbiota that are closely related to pathogenic (disease-causing) organisms or are themselves capable of becoming pathogenic. Examples include bacterial species of the genera Staphylococcus, Streptococcus, Enterococcus, Klebsiella, Enterobacter, and Neisseria.
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According to the CDC website “An estimated 1.35 million Salmonella cases occur annually in the United States. Approximately 450 people die each year due to Salmonella.”