Table 1.

Comparison of the numbers of sera positive and negative by human complement stratified by rabbit complement titer for subjects who have received MCC vaccination and for unvaccinated adults

rSBA titerNo. of sera with indicated hSBA titer in:
MCC vaccineesUnvaccinated adultsa
<4 ≥4 <4 ≥4
<8 34 6
8 3 0 0 2
16 3 3 0 2
32 2 5 2 4
644 10 0 5
128 1 26 0 4
≥2560 97 0 10
 Total47 147 2 27
  • a Note that only those adults with an rSBA titer of ≥8 were tested by the hSBA.