Table 3. Comparison of anti-tuberculosis drug susceptibility testing of Malawian Mycobacterium tuberculosis isolates, 2010–2011.
| Malawian result | South African resulta |
|||
|---|---|---|---|---|
| Sensitive to all drugs | Resistant to rifampicin only | Resistant to isoniazid only | MDR | |
| Sensitive to all drugs | 87 | 1 | 2 | 0 |
| Resistant to rifampicin only | 2 | 0 | 0 | 0 |
| Resistant to isoniazid only | 6 | 0 | 7 | 1 |
| MDR | 4 | 2 | 5 | 19 |
MDR: multidrug-resistant.
a The table shows the numbers of M. tuberculosis isolates, from Malawian cases of smear-positive pulmonary tuberculosis, that were tested for resistance to isoniazid, rifampicin, ethambutol and streptomycin in both the Central Reference Laboratory (Lilongwe, Malawi) and the South African Medical Research Council’s Supranational Reference Laboratory (Pretoria, South Africa).