Salmonella contamination of laying-hen flocks in two regions of Algeria

► Salmonella was detected in eight out of eighteen laying hen flocks that were sampled. ► Only nineteen samples were positive among 2754 analyzed. ► Nine serovars were identified. ► Thirteen isolates were resistant to antibiotic and six were multi-resistant. ► Six risk factors with a relative risk over 2 were identified as relevant.