Table 4. Mycobacterium avium culture results for patients living in different apartments within the same apartment building, Philadelphia, Pennsylvania, USA, 2010–2012*.
| Sampling site |
Culture results (VNTR type) | ||
|---|---|---|---|
| Patient 9 |
Patient 10 |
Patient 11 |
|
| Respiratory samples |
M. avium (36) |
M. avium (22) |
M. avium (36) |
| Household samples | |||
| Kitchen | |||
| Sink faucet | M. avium (14a) | M. avium (14a) | M. avium (37a[B2]) |
| Primary bathroom | |||
| Sink faucet | No NTM | M. chimaera | M. avium (14a) |
| Showerhead | M. avium (14a) | M. avium (22) and M. chimaera | M. avium (37a[B2]) |
| Shower pipe | No NTM | M. avium (37a[B1]) | M. avium (37a[B2]) |
| In-line shower filter | Not determined | Not determined | M. avium (31a) |
| Secondary bathroom | |||
| Sink faucet | Not determined | M. avium (22) | M. avium (36) |
| Showerhead | Not determined | M. avium (37a[B1]) | Not determined |
| Shower pipe | Not determined | M. avium (22) | Not determined |
| Humidification system | |||
| Water inflow | No NTM | M. avium (22) | M. avium (14a) |
| Water in system | No NTM | M. avium (22) | M. avium (14a) |
| Water drainage | No NTM | Not determined | No NTM |
*NTM, nontuberculous mycobacteria; VNTR, variable-number tandem-repeat.