[An outbreak of cholera (El Tor) in Samarkand Province, Uzbekistan in 1990].

A group outbreak of cholera caused by Vibrio eltor in the Samarkand Province++ in 1990 is analyzed. The retrospective analysis of the isolation of V. cholerae from water of surface reservoirs has been made.

[Optimization of bacteriologic studies of cholera].

A colored medium is described, consisting of dry nutrient agar, 1 percent mannose, and 0.02 percent bromothymol blue. Use of this medium helps accelerate the process of vibrio growth and differentiate mannose-positive vibrios from mannose-negative ones.