Spatio-temporal study of environmental nontuberculous mycobacteria isolated from Wardha district in Central India

被引:4
|
作者
Mishra, Pranava S. [1 ,4 ]
Narang, Pratibha [1 ]
Narang, Rahul [1 ]
Goswami, Bidhan [2 ]
Mendiratta, Deepak K. [3 ]
机构
[1] MGIMS, Dept Microbiol, Wardha 442102, Maharashtra, India
[2] Agartala Govt Med Coll, Dept Microbiol, Agartala 799001, Tripura, India
[3] Chirayu Med Coll & Hosp, Dept Microbiol, Near Bairagarh,Bhopal Indore Highway, Bhopal 462030, Madhya Pradesh, India
[4] IISER, Pune 411008, Maharashtra, India
来源
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY | 2018年 / 111卷 / 01期
关键词
Environment; Nontuberculous Mycobacteria; Seasonal variation; Speciation; Sites; Soil; Water; NON-TUBERCULOUS MYCOBACTERIA; WATER DISTRIBUTION-SYSTEM; AVIUM-INTRACELLULARE; AIDS PATIENTS; PULMONARY TUBERCULOSIS; ATYPICAL MYCOBACTERIA; PROTECTIVE IMMUNITY; NORTHERN MALAWI; TRIAL AREA; BOVIS BCG;
D O I
10.1007/s10482-017-0927-2
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
During the last two decades, nontuberculous mycobacteria (NTM) have gained in importance but there is still a paucity of data, particularly for environmental isolates. We studied, over a period of two years, the spatio-temporal features of NTM isolates obtained from different environmental sources in Wardha district, India. A total of 1398 samples (699 each of soil and water) were tested and 170 (12.2%) yielded NTM isolates, including 123 from soil and 47 from water samples. Out of 170 NTM isolates, 107 (63%) belonged to potentially pathogenic mycobacteria (PPM) and 63 (37%) to the less pathogenic mycobacterial (LPM) group. Overall, maximum isolation was obtained in rainy season (20.3%) followed by winter (13.5%), post rainy (8.7%) and summer seasons (5.8%). Mycobacterium fortuitum, Mycobacterium gordonae and Mycobacterium avium complex (MAC) were common isolates followed by Mycobacterium flavescens, Mycobacterium scrofulaceum, Mycobacterium simiae and Mycobacterium marinum. From soil, isolation of NTM was highest from grounds used for community gatherings (42.8%) followed by soil from residential premises (27.7%) and near the wells (26.0%). From drinking water sources, highest NTM isolation was obtained from wells (15.4%) followed by treated water tanks (6.9%), household receptacles (6.3%), hand pumps (5.6%) and tap water supply (3.5%). Isolation from natural canal water was 6.6%, while from drainage and waste water ponds isolation was 8.3%. The results of the study revealed that in Wardha district, NTM are present both in the soil and drinking water. As NTM can be pathogenic, particularly in immune-compromised individuals, these can be of potential risk to the human population.
引用
收藏
页码:73 / 87
页数:15
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