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Mycobacterial diseases other than tuberculosis.

¹Department of Medicine, MetroHealth Medical Center, Cleveland, Ohio 44109-1998.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America

|July 1, 1992

Summary

While tuberculosis incidence declined, non-tuberculous mycobacterial infections increased, particularly in immunocompromised individuals. Treatment challenges persist due to drug resistance and underlying health conditions.

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Is Mycobacterium xenopi an emerging pathogen?

Clinical infectious diseases : an official publication of the Infectious Diseases Society of America·1997

Area of Science:

Medical Microbiology
Infectious Diseases
Public Health

Background:

Tuberculosis (TB) incidence in the US has steadily declined.
Concurrently, non-tuberculous mycobacterial (NTM) infections have risen in frequency and proportion.
NTM infections present diverse clinical manifestations, including chronic pulmonary disease, lymphadenitis, and skeletal infections.

Purpose of the Study:

To analyze the changing landscape of mycobacterial infections in the United States.
To identify the primary etiologic agents of non-tuberculous mycobacterioses.
To examine the factors contributing to the increase in disseminated NTM disease, particularly in immunocompromised populations.

Main Methods:

Retrospective analysis of mycobacterial infection trends.
Identification of predominant NTM species causing disease.
Assessment of patient populations affected by disseminated NTM infections.

Main Results:

Mycobacterium avium/Mycobacterium intracellulare complex, Mycobacterium kansasii, Mycobacterium marinum, Mycobacterium fortuitum/Mycobacterium chelonae complex, and Mycobacterium scrofulaceum are key NTM pathogens.
Disseminated NTM disease has increased since 1986.
Immunocompromised individuals, including those with AIDS, malignancy, organ transplants, and steroid use, are increasingly affected.

Conclusions:

Non-tuberculous mycobacterial infections represent a growing public health concern.
The rise in NTM infections is linked to an increasing population of immunocompromised patients.
Treatment of NTM infections is challenging due to underlying conditions and inherent drug resistance.

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