Based on PCR serotyping, the 18 L. monocytogenes isolates were distributed into three serogroups “1/2a, 3a” (n ¼ 11), “1/2c, 3c” (n ¼ 5), and “4b, 4d, 4e” (n ¼ 2).
Based on PCR serotyping, the 18 L. monocytogenes isolates were distributed into threeserogroups “1/2a, 3a” (n ¼ 11), “1/2c, 3c” (n ¼ 5), and “4b, 4d, 4e” (n ¼ 2).