Title:Az Actinobacillus pleuropneumoniae 16-os szerotípusának azonosítása - Rövidített másodközlés
SUMMARY Five Actinobacillus pleuropneumoniae strains isolated from pathological lesions could not be assigned into any of the 15 serotypes using the indirect haemag glutination test. Hyperimmune sera raised in rabbits against them gave positive reactions with the homologous and the other four strains but did not react with the type strains. All five strains harboured apxIA, apxIB, ApxII and ApxIV genes. A new serovar of A. pleuropneumoniae — serovar 16 — is proposed with A. pleuropneumoniae A-85/14 as reference strain.