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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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Pulmonary Tuberculosis V01:28

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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
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Pulmonary Tuberculosis III01:31

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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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CY-TB skin test: Detect and defeat.

Aditi Bharti1, Tej Pratap Singh2

  • 1Department of Community and Family Medicine, AIIMS Bhopal, Madhya Pradesh, India.

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|October 31, 2025
PubMed
Summary

Latent Tuberculosis Infection (LTBI) diagnosis is improved with the Cy-Tb test. This new diagnostic tool aids in early detection and expands coverage for high-risk groups, supporting TB elimination goals.

Keywords:
Cy-TbInterferon γ Release Assay (IGRA)Latent Tuberculosis Infection (LTBI)Tuberculin Skin Test (TST)Tuberculosis Preventive Treatment (TPT)

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Area of Science:

  • Infectious Diseases
  • Immunology
  • Public Health

Background:

  • Latent Tuberculosis Infection (LTBI) represents a significant reservoir for Mycobacterium tuberculosis, contributing to the global tuberculosis (TB) burden.
  • Current diagnostic gaps hinder effective management and control of LTBI.
  • Early detection and expanded screening are crucial for TB elimination strategies.

Purpose of the Study:

  • To introduce the Cy-Tb test as a novel diagnostic solution for Latent Tuberculosis Infection.
  • To evaluate the Cy-Tb test's potential for early detection and integration into national TB control programs.
  • To assess the Cy-Tb test's contribution to expanding screening coverage for high-risk populations.

Main Methods:

  • The Cy-Tb test, developed by the Serum Institute of India, combines features of Tuberculin Skin Test (TST) and Interferon-Gamma Release Assays (IGRAs).
  • The test is designed for operational simplicity and point-of-care application.
  • Implementation under the National Tuberculosis Elimination Program (NTEP) policy expands its reach.

Main Results:

  • The Cy-Tb test offers enhanced specificity compared to TST, with improved operational simplicity over traditional IGRAs.
  • It facilitates expanded screening of high-risk groups and household contacts of pulmonary TB patients.
  • The test supports early detection of LTBI, a critical step in preventing disease progression.

Conclusions:

  • The Cy-Tb test is a next-generation diagnostic tool for LTBI, aligning with point-of-care testing needs.
  • Its cost-effectiveness and integration potential make it a valuable asset for national TB elimination programs.
  • The widespread adoption of Cy-Tb is expected to significantly contribute to achieving TB elimination targets in India and globally.