Prevalence of Pasteurella multocida toxinogenic strains in pigs in the South-East of Poland Prevalence of Pasteurella multocida toxinogenic strains in pigs in the South-East of Poland was investigated. Nasal swabs from 355 pigs aged 7 weeks to 4 months were taken and examinations were done using ELISA. Toxinogenic strains of P. multocida were identified in nasal swabs of 91 (25%) of pigs. The highest percentage of positive results (64%) was noted on a farm where pigs suffered from typical symptoms of infectious atrophic rhinitis.
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