[Biological characterization of ecovars of gram-negative bacteria circulating in the burn ward]

In 44 isolated cultures of Gram-negative bacteria, besides commonly known pathogenicity factors, their adhesive activity towards the cells of the buccal epithelium and their interrelations with the representatives of normal microflora which determine natural resistance to colonization have been studied. The artificial adhesion of target cells is accompanied by the inhibition on the natural colonization of epithelial cells by Streptococcus salivarius; it is, therefore, evident that adhesiveness is one of the factors which determine the behavior of microorganisms in cenoses. The circulation of adhesive strains of Gram-negative bacteria has been noted in the burn ward.