Table 1.
2008 | 2009 | 2010 | 2011 | Total | |
---|---|---|---|---|---|
Positive samples | 27 | 41 | 40 | 50 | 158 |
All samples | 3,854 | 4,145 | 4,142 | 5,295 | 17,436 |
Prevalence (per 1,000) | 7.01 | 9.89 | 9.66 | 9.44 | 9.06 |
2008 | 2009 | 2010 | 2011 | Total | |
---|---|---|---|---|---|
Positive samples | 27 | 41 | 40 | 50 | 158 |
All samples | 3,854 | 4,145 | 4,142 | 5,295 | 17,436 |
Prevalence (per 1,000) | 7.01 | 9.89 | 9.66 | 9.44 | 9.06 |