Volume 18, Number 11—November 2012
Research
Lack of Cross-protection against Bordetella holmesii after Pertussis Vaccination
Table
Results of testing of nasopharyngeal swabs for each Bordatella species at Massachusetts State Laboratory Institute, 2005–2007*
Test results and species detected |
No. (%) swabs
|
||
---|---|---|---|
2005 | 2006 | 2007 | |
Positive | |||
B. holmesii |
12 (0.37) | 17 (0.35) | 5 (0.14) |
B. parapertussis |
23 (0.71) | 14 (0.29) | 17 (0.49) |
B. pertussis |
196 (6.05) | 188 (3.87) | 204 (5.87) |
Negative | 3,007 | 4,644 | 3,248 |
Total tested | 3,238 | 4,863 | 3,474 |
*Years for which full data on all laboratory specimens tested were available.