[Comparative study of nutrient media for isolation of the agents of pertussis and parapertussis].

Taking into consideration literature data pointing to a possibility of a marked improvement of the quality of the medium for the isolation of the causative agents of pertussis and parapertussis, an experimental study was made of the sensitivity of the nutrient media produced by the Dagestan Institute of Nutrient Media, a medium made from dry and also of a number of media modified by the authors prepared on its basis. Pure freshly-isolated and museum B. pertussis cultures were used in the observations.