TABLE 1.

Characteristics of the strain panel used for bactericidal and immunoblot assays

Strain typeStrain no.SerogroupPorBPorAOpcOpa 5.5Reference(s)
Vaccine strainH44/76B15P1.7,16++11, 14
Isogenic variantsH44/76BP1.7,1635, 36
H44/76B15P1.7,−35, 36
H44/76B15P1.−,1635, 36
H44/76B15P1.−,−35, 36
H44/76B15P1.19,15-127
H44/76BP1.19,15-1This study
H44/76BP1.19,15-1+This study
H44/76BP1.19,15-1+This study
HI-5aB1541
HI-5aB15+This study
Other reference strainsM1080B1P1.7-1,110
S3032B19bP1.12,16+10
CU385B4P1.19,15(+)NDc38
  • a Spontaneous mutant of H44/76.

  • b Serotype designation from reference 36.

  • c ND, not determined.