Production of bacteriocin-like inhibitory substances (BLIS) by Streptococcus salivarius strains isolated from the tongue and throat of children with and without sore throat

"Streptococcus salivarius" strains, isolated from children with and without sore throat, were tested for bacteriocin production against "Streptococcus pyogenes. "S. salivarius" strains producing bacteriocin-like inhibitory substances (BLIS) against "S. pyogenes" were more frequently found in children without sore throat by the presence of BLIS-positive "S. salivarius" strains