Related Experiment Video
Updated: Nov 14, 2025

Identification of Mycobacterium Species by DNA Microarray Chip Method
Published on: June 24, 2025
Epidemiological risk factors and the geographical distribution of eight Mycobacterium species
1United States Environmental Protection Agency, Office of Research and Development, Center of Environmental Solutions and Emergency Response (CESER), 26 W. Martin Luther King Dr. Mail Stop 587, Cincinnati, OH, 45268, USA. Donohue.maura@epa.gov.
Background:
Nontuberculous mycobacteria (NTM) are environmental bacterium that may cause and/or compound respiratory diseases in humans. There are over a hundred NTM species with varying pathogenicity's Therefore, it is necessary to characterize the populations at risk for each species.
Methods:
Demographic (age, sex, and state of residence) and microbiological data from 2014 were extracted from Mississippi, Missouri, and Ohio disease surveillance systems. NTM species with > 50 reports were included in the analysis. Patient sex, age, and incidence rates were generated for each of the following NTM species: M. abscessus, M. avium complex (MAC), M. chelonae, M. fortuitum, M. gordonae, M. kansasii, M. mucogenicum, and M. peregrinum.
Results:
Analysis by sex showed that M. chelonae,M. fortuitum, M. gordonae,and M. kansasii had significantly higher rates in males than females. Age was not associated with patient rates for several specific NTM species e.g., M. chelonae. Mississippi had the highest patient' rates for M. avium, M. gordonae, M. kansasii, and M. chelonae. Ohio had the highest patient' rates for M. abscessus, M. mucogenicum, and M. peregrinum. The highest patient's rate for M. fortuitum was observed in Missouri.
Conclusion:
This study showed that NTM infection occurred more frequently in males. The highest rates were observed in Mississippi for most of the NTMs studied. Age was not a strong risk factor for some of the NTM species.
Related Concept Videos
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
Bacterial Phylum Actinobacteria
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:

