The pioneer human oral commensal bacterium Streptococcus mitis has unique biologic features that make it an attractive mucosal vaccine or therapeutic delivery vector. S. mitis is safe as a natural persistent colonizer of the mouth. throat and nasopharynx and the oral commensal bacterium is capable of inducing mucosal antibody responses. https://yeswellneses.shop/product-category/tinted-sunscreen/