Table 1.

Serum IgG responses to B. pertussis LOS and B. parapertussis LPS in patients with pertussis and parapertussis

Patient groupIgG titer in serum from indicated phase
Pertussis LOSParapertussis LPS
AcuteConvalescentAcuteConvalescent
Pertussis (n = 40)
 GMT<50364<50379
 Median<50374<50385
 Range<50–1,045<50–12,045<50–68450–20,240
Parapertussis (n = 14)
 GMT<50<5068646
 Median<50<50<501,308
 Range<50–122<50–73<50–3,334<50–4,625