[Present frequency of the different Serratia species isolated in Grenoble University Hospital Center (author's transl)].

Our study concerns 111 Serratia isolated during a period of seven months in a Grenoble hospital. The different species of Serratia are present with a high predominance of S. marcescens. Distribution, particular biochemical characteristics are discussed, and results of sensitivity to antibiotics, as well for antibiotics used against Gram negative bacteria as for the three quinolines against urinary bacteria. The place of Serratia in the hospital infections is discussed in the last part of this study.