On day 5 after infection there were no culture positive chickens but three chickens in “naïve” group were positive for ER DNA [20] and these showed the highest MBL values (74.8, 43.0 and 34.4 μg MBL/mL) compared to those of the DNA negative chickens (34.0, 30.8, 26.5 and 18.0 μg MBL/mL) of that group. This evidence concerns the gene MBL2 and infection.