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Target Product Profile for a Diagnostic Assay to Differentiate between Bacterial and Non-Bacterial Infections and Reduce Antimicrobial Overuse in Resource-Limited Settings: An Expert Consensus.

Publication ,  Journal Article
Dittrich, S; Tadesse, BT; Moussy, F; Chua, A; Zorzet, A; Tängdén, T; Dolinger, DL; Page, A-L; Crump, JA; D'Acremont, V; Bassat, Q; Lubell, Y ...
Published in: PLoS One
2016

Acute fever is one of the most common presenting symptoms globally. In order to reduce the empiric use of antimicrobial drugs and improve outcomes, it is essential to improve diagnostic capabilities. In the absence of microbiology facilities in low-income settings, an assay to distinguish bacterial from non-bacterial causes would be a critical first step. To ensure that patient and market needs are met, the requirements of such a test should be specified in a target product profile (TPP). To identify minimal/optimal characteristics for a bacterial vs. non-bacterial fever test, experts from academia and international organizations with expertise in infectious diseases, diagnostic test development, laboratory medicine, global health, and health economics were convened. Proposed TPPs were reviewed by this working group, and consensus characteristics were defined. The working group defined non-severely ill, non-malaria infected children as the target population for the desired assay. To provide access to the most patients, the test should be deployable to community health centers and informal health settings, and staff should require <2 days of training to perform the assay. Further, given that the aim is to reduce inappropriate antimicrobial use as well as to deliver appropriate treatment for patients with bacterial infections, the group agreed on minimal diagnostic performance requirements of >90% and >80% for sensitivity and specificity, respectively. Other key characteristics, to account for the challenging environment at which the test is targeted, included: i) time-to-result <10 min (but maximally <2 hrs); ii) storage conditions at 0-40°C, ≤90% non-condensing humidity with a minimal shelf life of 12 months; iii) operational conditions of 5-40°C, ≤90% non-condensing humidity; and iv) minimal sample collection needs (50-100μL, capillary blood). This expert approach to define assay requirements for a bacterial vs. non-bacterial assay should guide product development, and enable targeted and timely efforts by industry partners and academic institutions.

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Published In

PLoS One

DOI

EISSN

1932-6203

Publication Date

2016

Volume

11

Issue

8

Start / End Page

e0161721

Location

United States

Related Subject Headings

  • Sensitivity and Specificity
  • Reagent Kits, Diagnostic
  • Practice Guidelines as Topic
  • Molecular Diagnostic Techniques
  • Humans
  • General Science & Technology
  • Fever
  • Diagnosis, Differential
  • Developing Countries
  • Consensus
 

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Dittrich, S., Tadesse, B. T., Moussy, F., Chua, A., Zorzet, A., Tängdén, T., … González, I. J. (2016). Target Product Profile for a Diagnostic Assay to Differentiate between Bacterial and Non-Bacterial Infections and Reduce Antimicrobial Overuse in Resource-Limited Settings: An Expert Consensus. PLoS One, 11(8), e0161721. https://doi.org/10.1371/journal.pone.0161721
Dittrich, Sabine, Birkneh Tilahun Tadesse, Francis Moussy, Arlene Chua, Anna Zorzet, Thomas Tängdén, David L. Dolinger, et al. “Target Product Profile for a Diagnostic Assay to Differentiate between Bacterial and Non-Bacterial Infections and Reduce Antimicrobial Overuse in Resource-Limited Settings: An Expert Consensus.PLoS One 11, no. 8 (2016): e0161721. https://doi.org/10.1371/journal.pone.0161721.
Dittrich S, Tadesse BT, Moussy F, Chua A, Zorzet A, Tängdén T, Dolinger DL, Page A-L, Crump JA, D’Acremont V, Bassat Q, Lubell Y, Newton PN, Heinrich N, Rodwell TJ, González IJ. Target Product Profile for a Diagnostic Assay to Differentiate between Bacterial and Non-Bacterial Infections and Reduce Antimicrobial Overuse in Resource-Limited Settings: An Expert Consensus. PLoS One. 2016;11(8):e0161721.

Published In

PLoS One

DOI

EISSN

1932-6203

Publication Date

2016

Volume

11

Issue

8

Start / End Page

e0161721

Location

United States

Related Subject Headings

  • Sensitivity and Specificity
  • Reagent Kits, Diagnostic
  • Practice Guidelines as Topic
  • Molecular Diagnostic Techniques
  • Humans
  • General Science & Technology
  • Fever
  • Diagnosis, Differential
  • Developing Countries
  • Consensus