Navigation Links
New tuberculosis blood test in children is reliable and highly specific

A new blood test provides a fast and accurate tool to diagnose tuberculosis in children, a new proof-of-concept study shows. The newly developed test (TAM-TB assay) is the first reliable immunodiagnostic assay to detect active tuberculosis in children. The test features excellent specificity, a similar sensitivity as culture tests in combination with speed of a blood test. The promising findings are a major advance for the diagnosis of tuberculosis in children, particularly in tuberculosis-endemic regions.

The study has been published on Sept 1st, 2014 in Lancet Infectious Diseases.

Tuberculosis (TB) in children is a serious public health problem especially in low-resource countries. About one million children per year develop tuberculosis worldwide. Unfortunately, the diagnosis of paediatric TB poses a major challenge. TB symptoms in children are often non-specific and similar to those of common paediatric illnesses, including pneumonia and malnutrition. Further, obtaining adequate respiratory specimens for direct mycobacterial confirmation is problematic. Consequently, there is an urgent need for a more precise, rapid and affordable diagnostic test for childhood tuberculosis.

The new so-called TAM-TB assay is a sputum-independent blood test. It makes use of an immunological phenomenon during tuberculosis disease: During an active infection, the expression of CD27 a surface marker expressed on mycobacteria specific CD4+ T cells is lost. Using standard intracellular cytokine staining procedures and polychromatic flow cytometry, the test result is available within 24 hours after blood sampling.

New blood test assessed in tuberculosis endemic regions in Tanzania

The new test was assessed in tuberculosis endemic regions in Tanzania at the Ifakara Health Institute and the NIMR Mbeya Medical Research Center. Sputum and blood samples were obtained from children with tuberculosis symptoms to compare the performance of the new assay with culture tests. For the assessment of the diagnostic performance of the new test, the children were assigned to standardized clinical case classifications based on microbiological and clinical findings. The test proved to have a good sensitivity and excellent specificity.

"This rapid and reliable test has the great potential to significantly improve the diagnosis of active tuberculosis in children " says TB CHILD Program Manager Klaus Reither from the Swiss Tropical and Public Health Institute (Swiss TPH), who coordinated the study.

In a collaborative effort between Swiss TPH and Ludwigs-Maximilians-Universitt Mnchen (LMU Munich), the test will now be further refined to optimise performance, particularly in HIV-infected children, and to reduce costs. The goal is to finally validate and implement a rapid, robust and accurate diagnostic test for active paediatric tuberculosis that can be used on the district level in resource-poor, tuberculosis-endemic countries.


Contact: Klaus Reither
Swiss Tropical and Public Health Institute

Related biology news :

1. Seals introduced tuberculosis to the New World
2. New vaccine shows promise as stronger weapon against both tuberculosis and leprosy
3. New approach for tuberculosis drugs
4. New tuberculosis test more than skin deep
5. Vinegar kills tuberculosis and other mycobacteria
6. Promising class of antibiotics discovered for treatment of drug-resistant tuberculosis
7. Drug resistance-associated genes: A cornerstone for the control and protection against tuberculosis
8. Mycobacterium tuberculosis: Our African follower for over 70,000 years!
9. Tuberculosis genomes portray secrets of pathogens success
10. New compound excels at killing persistent and drug-resistant tuberculosis
11. Vitamin D benefits breathing in tuberculosis patients
Post Your Comments:
(Date:10/29/2015)... LA JOLLA, Calif. , Oct. 29, 2015 /PRNewswire-USNewswire/ ... released a new report titled, "DNA Synthesis and Biosecurity: ... how well the Department of Health and Human Services ... was issued in 2010. --> ... advances, but it also has the potential to pose ...
(Date:10/29/2015)... , Oct. 29, 2015  Rubicon Genomics, Inc., ... U.S. distribution of its DNA library preparation products, ... Rubicon,s new ThruPLEX Plasma-seq kit. ThruPLEX Plasma-seq has ... preparation of NGS libraries for liquid biopsies--the analysis ... and prognostic applications in cancer and other conditions. ...
(Date:10/29/2015)... 29, 2015 NXTD ) ... focused on the growing mobile commerce market and ... StackCommerce, a leading marketplace to discover and buy ... smart wallet on StackSocial for this holiday season. ... the "Company"), a biometric authentication company focused on ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... November 25, 2015 The ... is a professional and in-depth study on the ...      (Logo: ) , ... industry including definitions, classifications, applications and industry chain ... the international markets including development trends, competitive landscape ...
(Date:11/24/2015)... 2015 Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will ... New York on Wednesday, December 2 at 9:30 a.m. ... and CEO, will provide a corporate overview. th ... at 1:00 p.m. ET/10:00 a.m. PT . Jim Mazzola ... a corporate overview. --> th Annual Oppenheimer Healthcare ...
(Date:11/24/2015)... RALEIGH, N.C. , Nov. 24, 2015  Clintrax Global, Inc., ... Raleigh, North Carolina , today announced that the company has ... earnings represented a 391% quarter on quarter growth posted for Q3 ... Kingdom and Mexico , with the ... place in December 2015. --> United Kingdom ...
(Date:11/24/2015)... ALBANY, New York , November 24, 2015 /PRNewswire/ ... According to a recent market research report released by ... is projected to expand at a CAGR of 17.5% ... titled "Non-invasive Prenatal Testing Market - Global Industry Analysis, ... 2022", estimates the global non-invasive prenatal testing market to ...
Breaking Biology Technology: