Volume 8, Number 1—January 2002
Research
Changes in Predominance and Diversity of Genomic Subtypes of Bordetella pertussis Isolated in the United States, 1935 to 1999
Terri Hawes Hardwick, Pamela K. Cassiday, Robbin S. Weyant, Kristine M. Bisgard, and Gary N. Sanden
Table
Frequencies of the most prevalent pulsed-field gel electrophoresis (PFGE) profiles of Bordetella pertussis strains isolated in the United States from 1935 to 1999
| PFGE | Total US n=1,333 | Total US w/o Cinn n=853 | 1935-1965 n=16 | 1966-1985 n=127 | 1986-1999 n=1,190 | 1986-1999 w/o Cinn n=710 |
|---|---|---|---|---|---|---|
| 2 | 9.6 | 4.3 | - | - | 10.8 | 5.4 |
| 3a | 2.4 | 1.3 | - | 2.4 | 2.4 | 1.1 |
| 4a | 3.7 | 0.4 | - | 0.8 | 4 | 0.3 |
| 6a | 3.1 | 0.1 | - | 0.8 | 3.4 | 0.1 |
| 7 | 1.4 | 1.8 | - | - | 1.6 | 2.1 |
| 8 | 2 | - | - | - | 2.2 | - |
| 10a | 33.3 | 33.9 | - | 0.8 | 37.3 | 40.8 |
| 13 | 9.2 | 14.1 | - | - | 10.3 | 17 |
| 14b | 1.6 | 2.6 | 18.8 | 4.7 | 1.1 | 1.8 |
| 15a | 2.6 | 0.8 | - | 1.6 | 2.7 | 0.8 |
| 17a | 0.8 | 0.8 | - | 3.1 | 0.5 | 0.4 |
| 20b | 1 | 1.5 | 6.3 | 8.7 | 0.2 | 0.1 |
| 21a | 2.3 | 2.2 | - | 3.9 | 2.2 | 2 |
| 27a | 7.1 | 9.3 | - | 13.4 | 6.5 | 8.8 |
| 37 | 0.7 | 1 | - | - | 0.8 | 1.3 |
| 46 | 1.1 | 1.8 | - | - | 1.3 | 2.2 |
| 52 | 0.4 | 0.6 | - | 3.9 | - | - |
| 53a | 0.3 | 0.5 | - | 1.6 | 0.2 | - |
| 62 | 1.1 | 1.8 | - | 11.8 | - | - |
| 64b | 1.4 | 2.2 | 18.8 | 9.4 | 0.3 | 0.6 |
| 66a | 0.6 | 0.9 | - | 5.5 | 0.1 | 0.1 |
| 69 | 0.8 | 1.2 | - | 7.9 | - | - |
| 71c | 0.2 | 0.4 | 12.5 | 0.8 | - | - |
| 74b | 0.5 | 0.8 | 6.3 | 3.9 | 0.1 | 0.1 |
| 75 | 0.2 | 0.4 | - | 2.4 | - | - |
| 82 | 2.1 | 3.3 | - | - | 2.4 | 4 |
| Total | 89.5 | 88 | 62.7 | 87.4 | 90.4 | 89 |
aPFGE profile spans second and third time periods.
bPFGE profile spans all three time periods.
cPFGE profile spans first and second time periods.
CINN = Cinncinnati, Ohio, data.
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Page updated: July 14, 2010
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