bulgaricus OLL1073R-1, a polysaccharide-producing lactic acid bacterial strain, has proven beneficial health effects on older people by preventing infection with influenza A virus subtype H3N2 via increasing the production of H3N2-bound salivary IgA [68] and improving the mucosal immune function in elderly people with weakened immune systems [69]. The gene discussed is CD79A; the disease is infection.