Volume 25, Number 3—March 2019
Research
Mycobacterium avium in Community and Household Water, Suburban Philadelphia, Pennsylvania, USA, 2010–2012
Leah Lande
, David C. Alexander, Richard J. Wallace, Rebecca Kwait, Elena Iakhiaeva, Myra Williams, Andrew D.S. Cameron, Stephen Olshefsky, Ronit Devon, Ravikiran Vasireddy, Donald D. Peterson, and Joseph O. Falkinham
, David C. Alexander, Richard J. Wallace, Rebecca Kwait, Elena Iakhiaeva, Myra Williams, Andrew D.S. Cameron, Stephen Olshefsky, Ronit Devon, Ravikiran Vasireddy, Donald D. Peterson, and Joseph O. Falkinham
Table 2
Description of MAC isolates from respiratory and household samples, Philadelphia, Pennsylvania, USA, 2010–2012*
| Patient | Case no. | Respiratory sample MAC species (VNTR type) | Household (biofilm) sample |
VNTR match between patient's respiratory and own household samples | VNTR match between patient's respiratory and community household samples | ||
|---|---|---|---|---|---|---|---|
| No. sites sampled | No. (%) sites positive for M. avium | VNTR type(s) | |||||
| 1 | P1 | M. chimaera | 13 | 6 (46.1) | 22 and 37a[B9] | NA | NA |
| 2 | P2 | M. avium (15) | 11 | 1 (9.1) | 47 | No | No |
| 3 | P4 | M. avium (14a) | 8 | 1 (12.5) | 14a | Yes | Yes |
| 4 | P5 | M. avium (7) | 15 | 0 | NA | NA | No |
| 5 | P6 | M. avium (36) | 6 | 4 (66.7) | 14a | No | Yes |
| 6 | P7 | M. avium (37a[B1]) | 13 | 2 (15.3) | 14a | No | Yes |
| 7 | P8 | M. avium (14a) | 8 | 4 (50.0) | 14a | Yes | Yes |
| 8 | P9 | M. avium (36) | 11 | 2 (18.1) | 14a | No | Yes |
| 9 | P10 | M. avium (22) | 13 | 8 (61.5) | 14a, 22, and 37a[B1] | Yes | Yes |
| 10 | P11 | M. avium (36) | 10 | 8 (80.0) | 14a, 31a, 36, and 37a[B2] | Yes | Yes |
| 11 | P12 | M. intracellulare | NA | NA | NA | ||
| 12 | P13 | M. avium (14a) | 7 | 2 (28.5) | 14a and 37a[B1] | Yes | Yes |
| 13 | P14 | M. avium (14a) | 10 | 3 (30.0) | 14a | Yes | Yes |
| 14 | P18 | M. avium (37) | 11 | 4 (36.3) | 14a, 31a, 36 and 37 | Yes | Yes |
| 15 | P19 | M. avium (14a) | 6 | 1 (16.7) | 31a | No | Yes |
| 16 | P20 | M. intracellulare | 6 | 3 (50.0) | 37 | NA | NA |
| 17 | P21 | M. avium (14a) | 8 | 1 (12.5) | 14a | Yes | Yes |
| 18 | P22 | M. intracellulare | 10 | 3 (30.0) | 38a | NA | NA |
| 19 | P23 | M. avium (14a) | 5 | 5 (100) | 31a and 36 | No | Yes |
| 20 | P24 | M. avium (14a) | 8 | 2 (25.0) | 14a | Yes | Yes |
| 21 | P27 | M. avium (37) | 13 | 3 (23.0) | 36 | No | Yes |
| 22 | P28 | M. avium (37a[B2]) | 6 | 2 (33.3) | 30 and 36 | No | Yes |
| 23 | P30 | M. avium (55) | 14 | 0 | NA | No | No |
| 24 | P32 | M. chimaera | 15 | 0 | NA | NA | NA |
| 25 | P33 | M. avium (14a) | 4 | 1 (25.0) | 14a | Yes | Yes |
| 26 |
P34 |
M. avium (14a) |
19 |
5 (26.3) |
14a |
Yes |
Yes |
| Control | |||||||
| 27 | P3 | No MAC | 9 | 0 | NA | NA | NA |
| 28 | P17 | No MAC | 5 | 4 (80.0) | 14a and 36 | NA | NA |
| 29 | P26 | NA | 14 | 4 (28.5) | 36 | NA | NA |
| 30 | P29 | No MAC | 10 | 3 (30.0) | 31a and 36 | NA | NA |
| 31 | P31 | NA | 3 | 0 | NA | NA | NA |
| 32 | P35 | NA | 4 | 1 (25.0) | 19 | NA | NA |
| 33 | P36 | NA | 11 | 5 (45.4) | 31a and 36 | NA | NA |
| 34 | P37 | NA | 6 | 3 (50.0) | 36 | NA | NA |
| 35 | P38 | NA | 9 | 1 (11.1) | 30 | NA | NA |
| 36 | P40 | NA | 9 | 3 (33.3) | 14a and 37a[B1] | NA | NA |
| 37 |
P41 |
NA |
4 |
0 |
NA |
NA |
NA |
| Total | 334 | 95 (28.4) | |||||
*ID, identification; MAC, Mycobacterium avium complex; NA, not applicable; VNTR, variable-number tandem-repeat.
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