TABLE 4.

Comparison of MLST and MLVA types for 136 randomly selected B. pertussis isolates collected between 1920 and 2002

MLST type (profile)aMLVA typeFrequency for indicated periodb
12345
2 (2,1,2)105
232
281
292
391
831
981
1001
1051
1251
1271
1641
3 (1,1,2)1041
191
272
29251
321
551
70191
731
911
9231
9611
971
1081
1171
12311
4 (1,1,3)271
341
5 (1,2,2)1616
2511
261
271916
281
321
362
1181
1204
6 (1,1,4)4411
646
10 (1,1,6)272
11 (2,1,5)231
  • a MLST type derived from allelic profile of ptxA, ptxC, and tcfA genotypes (29, 40).

  • b The periods are described in detail in Table 1. None of the isolates in this analysis were from period 6. The numbers of isolates analyzed per period were as follows: for period 1, 23; for period 2, 5; for period 3, 24; for period 4, 51; and for period 5, 33.