Immunization with Streptococcus suis bacterin plus recombinant Sao protein in sows conveys passive immunity to their piglets

Table 4 Percentage of pathological lesion score after challenge with homologous Streptococcus suis serotype 2 bacteria

Group^a	Total Score	Reduced Percentage	The Score of Gross Lesions^b
Group^a	Total Score	Reduced Percentage	Brain	Serosa	Joint	Spleen	Liver	Lung
Vaccination	4	81.0%^e	0 (0/3)	0 (0/3)	0 (0/3)	0 (0/3)	0 (0/3)	4 (2/3)
Control^d	21	-	0 (0/3)	0 (0/3)	0 (0/3)	5 (3/3)	3 (3/3)	13 (3/3)

^aVaccination: S. suis2 + rSao, Control: sterile saline
^bNo lesion = 0, lesion area <33% = 1, lesion area 33– 66% = 3, lesion area >66% = 5
^cDifferences between groups were analyzed by Student’s t-test P < 0.05
^dThe number of piglets in a group that was confirmed to have the presence of S
suis serotype 2 bacteria

ISSN: 1746-6148