TABLE 3.

Survival of WA strains in 50% pooled normal human serum at 37°C

Strain	Mean % survival ± SD after 90 min of incubationa	P
YadA, negative	3 ± 22	<0.9, <0.005, <0.05, <0.2
YadA, wild type	229 ± 67	<0.6, <0.005
YadA(D332L, H333E)	251 ± 30	<0.6
YadA-EibA	84 ± 47	<0.1, <0.05
YadA-Hia	28 ± 24	<0.1, <0.2
YadA-UspA1	1 ± 13	<0.9

^aA 100% value corresponds to the initial bacterial input determined by CFU.