Table 1.

Suggested phenotypes for susceptibility towards the three ETEC-F4 variants

Phenotype	F4 variants			References
	F4ab	F4ac	F4ad
A	+	+	+	[9]
B	+	+	-	[9]
C	+	-	+	[9]
D	-	-	+	[9]
E	-	-	-	[9]
F	+	-	-	[6]
G	-	+	-	[11]
H	-	+	+	[12]

“+” means susceptible for that variant, and “-” refers to resistance. Adapted from Baker et al. [6]; Bijlsma et al. [9]; Bonneau et al. [11] and Li et al. [12].