Table 4.

Number of Strains Associated with Each Phylogenetic Type. These Values are Presented as Percentages

Phylogenetic GROUPS
Group	A	D	B1	B2	P (B2 + D)	NP (A + B1)
N	83.3	0.0	13.3	3.3	3.3	96.7
S	45.8	45.8	8.3	0.0	45.8	54.2
H	21.4	64.3	0.0	14.3	78.6	21.4
O	72.7	18.2	9.1	0.0	18.2	81.8

N = commensal strains (AFEC), S = septicemia strains, H = swollen head syndrome strains, O = omphalitis strains.