Beta
360104

Experience of an Egyptian tertiary Laboratory in the diagnosis of tuberculous and non-tuberculous Mycobacterial Infections: A five-year retrospective study.

Article

Last updated: 25 Dec 2024

Subjects

-

Tags

Clinical microbiology

Abstract

Background: Tuberculosis (TB) is one of the significant health concerns in Egypt, necessitating rapid, affordable, and accurate diagnosis to aid in its control. This study presents data collected over five years (2017-2021) to explore different diagnostic TB methods in our lab. Methods: A total of 33700 non-repetitive samples were subjected to different diagnostic methods; 30000 were stained by Ziehl–Neelsen (ZN), of which 2819 were cultured on Löwenstein-Janssen (LJ) media, and 456 were analyzed by GeneXpert; 3700 samples were tested by interferon-gamma release assay (IGRA) Quantiferon. Moreover, 3650 patients underwent the tuberculin skin test (TST). Results: GeneXpert displayed the highest positivity (23.9%), while ZN smear microscopy was the lowest (4.8%). The detection capability between pulmonary and extrapulmonary samples was not statistically significant using LJ culture but significant using GeneXpert MTB/RIF. Rifampicin resistance was 17.4% among the GeneXpert Mycobacterium tuberculosis (MTB)-positive samples. Conclusions: GeneXpert MTB/RIF assay is a user-friendly, rapid, and efficient method for identifying pulmonary and extrapulmonary TB with the simultaneous detection of rifampicin-resistant strains. However, culture and smear microscopy remain the most dominant diagnostic methods in developing countries due to their low cost and relatively acceptable specificity.

DOI

10.21608/mid.2024.287718.1933

Keywords

Mycobacterium tuberculosis, Ziehl– Neelsen, Pulmonary TB, Extrapulmonary TB, Egypt

Authors

First Name

Asmaa

Last Name

Ramadan

MiddleName

A.

Affiliation

Department of Microbiology and Biotechnology, Division of Clinical and Biological Sciences, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport (AASTMT), Alexandria, Egypt, Ministry of Health and Population, Alexandria, Egypt

Email

a_ramadaneg@hotmail.com

City

Alexandria

Orcid

-

First Name

Sherine

Last Name

Shawky

MiddleName

M.

Affiliation

Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, Egypt

Email

sherineshawky@hotmail.com

City

-

Orcid

-

First Name

Arsany

Last Name

Ibrahem

MiddleName

-

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Alexandria University, Alexandria, Egypt

Email

arsany_abrahem@hotmail.com

City

-

Orcid

-

First Name

Mohammed

Last Name

El-Kholy

MiddleName

A.

Affiliation

Department of Microbiology and Biotechnology, Division of Clinical and Biological Sciences, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport (AASTMT), Alexandria, Egypt

Email

mohammed.elkholy@aast.edu

City

-

Orcid

0000-0002-4944-5962

Volume

5

Article Issue

3

Related Issue

49567

Issue Date

2024-08-01

Receive Date

2024-05-07

Publish Date

2024-08-01

Page Start

948

Page End

960

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_360104.html

Detail API

https://mid.journals.ekb.eg/service?article_code=360104

Order

9

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

https://mid.journals.ekb.eg/

MainTitle

Experience of an Egyptian tertiary Laboratory in the diagnosis of tuberculous and non-tuberculous Mycobacterial Infections: A five-year retrospective study.

Details

Type

Article

Created At

25 Dec 2024