Abstract

A combined serological and PCR method for the detection of Listeria monocytogenes infection in symptomatic and asymptomatic ovine flocks was evaluated. Seventy-eight milk samples and 157 serum samples were analysed using a L. monocytogenes PCR detection kit and an anti-listeriolysin O IgG immunoassay kit. The combined use of these commercial kits allowed a rapid and effective detection of L. monocytogenes infection in both the early stage, before seroconversion, and in a later phase, even after antibiotic therapy.

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