Table 1 Naturally anthrax spore-contaminated soil samples examined by the classic method at three dilution levels and by the GABRI method
Soil sample (Subdistricts of Bangladesh) | CFU of B. anthracis isolated by classic method | CFU of contaminants isolated by classic method | CFU of B. anthracis and contaminants isolated by GABRI method | |||||
|---|---|---|---|---|---|---|---|---|
Total of 10 plates | Total of 10 plates | Total of 10 plates | ||||||
Undiluted | 1:10 | 1:100 | Undiluted | 1:10 | 1:100 | CFU of B. anthracis | CFU of contaminants | |
Faridpur | 0 | 4 | 8 | 8482 | 2190 | 314 | 394 | 1622 |
Sapatul | 108 | 32 | 0 | 1380 | 162 | 22 | 256 | 200 |
Dhunot | 0 | 0 | 0 | 4404 | 598 | 60 | 10 | 1164 |
Santhia | 120 | 128 | 15 | 4968 | 826 | 90 | 10,000 | 276 |
Shahazadpur | 0 | 0 | 0 | 1074 | 100 | 14 | 10 | 280 |
Ullapara | 20 | 0 | 0 | 66 | 2 | 0 | 68 | 130 |
Shahazadpur | 2 | 0 | 0 | 426 | 44 | 2 | 12 | 176 |
Average | 35.7 | 23.4 | 3.3 | 2971.4 | 560.3 | 71.7 | 1535.7 | 549.7 |