TABLE 3.
Toxin gene profiles by 2-year intervals, 2011 to 2016
| Toxin gene profile | Base pair deletion in tcdC | Percent of isolates with the given profile duringa
: |
||
|---|---|---|---|---|
| 2011 to 2012 | 2013 to 2014 | 2015 to 2016 | ||
| tcdA positive, tcdB positive | 0 | 59.0 | 67.4 | 69.6 |
| tcdA positive, tcdB positive, cdtA positive, and cdtB positive | 18 | 28.1 | 19.0 | 17.6 |
| tcdA positive, tcdB positive | 18 | 5.8 | 5.3 | 4.5 |
| tcdA positive, tcdB positive, cdtA positive, and cdtB positive | 39 | 2.3 | 3.4 | 2.8 |
| tcdA positive, tcdB positive, cdtA positive, and cdtB positive | 0 | 2.1 | 1.8 | 2.1 |
| tcdA positive, tcdB positive, cdtA positive, and cdtB positive | 54 | 0.2 | 0 | 0 |
| tcdA negative, tcdB positive, cdtA positive, and cdtB positive | 0 | 0 | 0 | 0.1 |
| Nontoxigenic | 2.5 | 3.1 | 3.3 | |
a
In 2011–2012, 914 (98.8%) isolates were profiled; in 2013–2014, 945 (99.7%) isolates were profiled; and in 2015–2016, 941 (100%) isolates were profiled.