Abstract
Pigs were infected intranasally with Salmonella cholerae-suis var. Kunzendorf. They developed rhinitis, tonsillitis and purulent pneumonia 24 h. after infection which increased in extent up to the 9th day. Histologically there was purulent bronchitis, bronchiolitis and widespread destruction of interalveolar septa, which progressed later to necrosis of entire pulmonary lobules. Damaged tissue underwent organization and fibrosis between the 11th and 14th days. These findings suggest that respiratory infection may explain the pneumonia and pleuritis encountered in field cases of salmonellosis.
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