[Laboratory diagnosis of cholera during enterocolitis epidemic at Dimitrovgrad in August and September 1989].

Epidemy of enterocolitis at Dimitrovgrad started on the 15th of August 1989, and lasted for a whole month. 2018 persons became ill. Bacteriological cholera tests were performed on 3054 samples of stools from 2558 patients, and of those who were in contact with the sick populations. Stool samples were cultured on the alcal peptonic water, alcal agar, and TCBS agar for vibrio isolation. Suspicious colonies identification was made by biochemical and serological tests. Difference between cholera biotype and eltor was found by differential testings. In 16 examined persons Vibrio colerae biotip eltor serotype Ogara was isolated. Sensitivity to antibiotics was determined by standard disc method.