TABLE 1.
Dilution (n) | % B. pertussis detected with swab type:
|
||||
---|---|---|---|---|---|
None (control) | Dacron | Rayon | Calcium-alginate | DNA/RNA Protect system | |
10−3 (10) | 100 | 100 | 100 | 50 | 100 |
10−4 (10) | 100 | 70 | 80 | 20a | 90 |
10−5 (10) | 80 | 10 | 10 | 10 | 50b |
10−6 (10) | 0 | 0 | 0 | 0 | 0 |
Calcium-alginate versus all other swabs at the 10−4 dilution (P < 0.02).
DNA/RNA Protect system versus all other swabs at the 10−5 dilution (P < 0.02).