Volume 6, Number 5—October 2000
Dispatch
Double infection with a Resistant and a Multidrug-Resistant Strain of Mycobacterium tuberculosis
Table
Treatment regimens and characteristics of Mycobacterium tuberculosis isolatesa
Treatment | Therapy | Susceptibility testing | |||||
---|---|---|---|---|---|---|---|
Months | Hospital | Regimen | Culture | Culture obtained | Current resistance pattern | Time delay (months)b | Spoligotype |
0 | A/B | H, R, E,c Z | pos. | 02/28/96 | H, S | 2 | type I |
1 | B | H, R, Z | pos. | 03/17/96 | H, S | 2 | type I |
2 | B | H, R, E, Z | neg. | - | - | - | - |
3 | B | H, R, E, Z | neg./pos. | - | n.d. | - | n.d. |
4 | C | H, E, Pt | pos. | 06/06/96 | H, S, R, (E), (Rb) | 2 | type II |
5 | D | R, E, Z | pos. | 07/12/96 | H, S, R, (E), (Rb) | 2 | type II |
6 | D | E, Z, Rb, Of | pos. | - | n.d. | - | n.d. |
7-12 | D | E, Z, Rb, Pt | pos. | - | n.d. | - | n.d. |
13 | D | E, Z, Rb, Pt | pos. | 03/15/97 | H, S, R, E, Rb, Pt | 1 | type II |
14-18 | D | Z, Pt, Ci | pos. | 04/25/97 | H, S, R, E, Rb, Pt, Z | 5 | type II |
19 | D | Z, Pt, Rb, Ci | pos. | - | n.d. | - | n.d. |
20-21 | D | Rb, Ci, Am, Pa | pos. | - | n.d. | - | n.d. |
22-24 | D | Rb, Ci, Am, Pa, Cl | pos. | - | n.d. | - | n.d. |
25-28 | D | Rb, Ci, Am, Pa, Cl | pos./neg. | 02/18/98 | H, S, R, E, Rb, Pt Z, Pa | 4 | type II |
29-32 | D | Rb, Ci, Am, Pa, Cl | pos. | 06/23/98 | H, S, R, E, Rb, Pt, Z, Pa, Am | 4 | type II |
33 | D | Rb, Ci, Cl, Ca | pos. | - | n.d. | - | n.d. |
aAbbreviations and symbols: H, isoniazid; S, streptomycin; R, rifampin; E, ethambutol; Rb, rifabutin; Pt, protionamide; Z, pyrazinamide; Pa, p=aminosalicylic acid; Am, amikacin; Of, ofloxacin, Ci, ciprofloxacin; Cl, clofazimine; Ca, capreomycin; borderline results are shown in parentheses; pos., positive culture result; neg., negative culture result; n.d., not determined.
b Time between the date on which the specimen was obtained and the date on which the drug-susceptibility pattern was available for the clinician (drug-susceptibility testings were not always performed directly after the cultures were grown but were done retrospectively).
cE was given in the first 4 days of therapy only.