Intratracheal, intracloacal, and subcutaneous injection of living cultures of the fowl coryza bacillus had no demonstrable effect on the susceptibility of fowl to coryza.

Intraperitoneal injection was irregularly followed by a definitely altered susceptibility. Growth of the specific bacillus was inhibited in the nasal tract of approximately 70 per cent of 25 birds which had received an earlier intraperitoneal injection.

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Copyright, 1935, by The Rockefeller Institute for Medical Research New York
1935
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