[Methods of diagnosing infectious atrophic rhinitis].

Prevailing is the opinion that the infectious character of atrophic rhinitis is due to the causative agents isolated-- Bact . pseudomonas aeruginosa, Borditella bronchiseptica, and Mycoplasma. Using these either alone or in a mixed infection a successful reproduction of the disease was accomplished in 10-day-old pigs, which demonstrated its infectious character. It was found that most susceptible were pigs at the age of up to 30 days. The symptoms of the disease were dependent on the acute or chronic manifestation of atrophic rhinitis. The morphologic changes were mainly confined to the septum nasi, the conchae, and os cribriformis . Pathogenicity was tested on albino mice, guinea pigs, and rabbits, and diagnosing was effected with test animals through rentgenography and histologic and biochemical investigations. The diagnosis was based on the results of the above-mentioned investigations as well as on the clinical and morphologic manifestation of atrophic rhinitis.