TABLE 1.

CuZnSOD activity (potassium cyanide or DEDC inhibitable) and hybridization of Haemophilus sodC probes to chromosomal DNA

Strain (no. of isolates)Phylogenetic divisionaHybridization to sodC probebCuZnSOD activityb
Noncapsulate ET (45)NA
Serotype a (2)I
Serotype a (3)II+
Serotype b (5)II+
Serotype e (6)*+
Serotype f (6)II+
Cryptic genospecies (12)NA++
  • a I and II correspond to phylogenetic divisions I and II, respectively, of capsulate H. influenzae (11). NA, not applicable; *, distantly related to division I and II strains.

  • b + and −, positive and negative, respectively, for probe hybridization or CuZnSOD activity.