Identification of Nontuberculous Mycobacteria in Patients with Pulmonary Diseases in Gyeongnam, Korea, Using Multiplex PCR and Multigene Sequence-Based Analysis

Table 2

Identification of NTM clinical isolates from patients with NTM pulmonary disease treated at Gyeongsang National University Hospital from 2016 to 2018.

	Clinical strains	No. of isolates	Percentage (%)
1	M. intracellulare	234	73.1
2	M. avium subsp. avium	26	8.1
3	M. avium subsp. hominissuis	13	4.1
4	M. kansasii	4	1.3
5	M. massiliense	9	2.8
6	M. abscessus	2	0.6
7	M. fortuitum	9	2.8
8	M. chimaera	6	1.9
9	M. gordonae	4	1.3
10	M. colombiense	1	0.3
11	M. mageritense	1	0.3
12	M. persicum	1	0.3
13	Coinfection	7	2.2
14	ND	3	0.9
	Total	320	100

The seven cases of coinfection included three cases of M. avium subsp. avium and M. intracellulare coinfection; one M. avium subsp. hominissuis and M. intracellulare coinfection; one M. intracellulare and M. kansasii coinfection; one MTB and M. intracellulare coinfection; and one MTB and M. massiliense coinfection.Three clinical isolates were not clearly identified by the first and second mPCR as well as multigene sequence-based analysis. ND, not determined.