Evaluation of BACTEC MGIT 960 and BACTEC 460TB systems for recovery of mycobacteria from clinical specimens of a university hospital with low incidence of tuberculosis
L. Leitritz et al., Evaluation of BACTEC MGIT 960 and BACTEC 460TB systems for recovery of mycobacteria from clinical specimens of a university hospital with low incidence of tuberculosis, J CLIN MICR, 39(10), 2001, pp. 3764-3767
Clinical samples obtained over a period of 8 months (n = 2,624) were proces
sed in parallel with the BACTEC 460TB system, with the MGIT 960 system, and
in Lowenstein-Jensen (Lj) medium, resulting in the recovery of 127 mycobac
teria. Recovery rates in combinations of the BACTEC 460TB or MGIT 960 syste
m with LJ were, respectively, 94.7 and 94.7% for Mycobacterium tuberculosis
complex (n = 57) and 91.4 and 70.0% for nontuberculous mycobacteria (n = 7
0). Contamination rates, elevated in the MGIT 960 system, were associated w
ith patients (cystic fibrosis) and type of material but not with transport
time. Detection time was reduced in the MGIT 960 system.