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BMC Infectious Diseases
Published in: BMC Infectious Diseases 1/2020

01-12-2020 | Adenovirus | Research article

High burden of viral respiratory co-infections in a cohort of children with suspected pulmonary tuberculosis

Authors: M. M. van der Zalm, E. Walters, M. Claassen, M. Palmer, J. A. Seddon, A.M. Demers, M. L. Shaw, E. D. McCollum, G. U. van Zyl, A. C. Hesseling

Published in: BMC Infectious Diseases | Issue 1/2020

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Abstract

Background

The presentation of pulmonary tuberculosis (PTB) in young children is often clinically indistinguishable from other common respiratory illnesses, which are frequently infections of viral aetiology. As little is known about the role of viruses in children with PTB, we investigated the prevalence of respiratory viruses in children with suspected PTB at presentation and follow-up.

Methods

In an observational cohort study, children < 13 years were routinely investigated for suspected PTB in Cape Town, South Africa between December 2015 and September 2017 and followed up for 24 weeks. Nasopharyngeal aspirates (NPAs) were tested for respiratory viruses using multiplex PCR at enrolment, week 4 and 8.

Results

Seventy-three children were enrolled [median age 22.0 months; (interquartile range 10.0–48.0); 56.2% male and 17.8% HIV-infected. Anti-tuberculosis treatment was initiated in 54.8%; of these 50.0% had bacteriologically confirmed TB. At enrolment, ≥1 virus were detected in 95.9% (70/73) children; most commonly human rhinovirus (HRV) (74.0%). HRV was more frequently detected in TB cases (85%) compared to ill controls (60.6%) (p = 0.02). Multiple viruses were detected in 71.2% of all children; 80% of TB cases and 60.6% of ill controls (p = 0.07). At follow-up, ≥1 respiratory virus was detected in 92.2% (47/51) at week 4, and 94.2% (49/52) at week 8.

Conclusions

We found a high prevalence of viral respiratory co-infections in children investigated for PTB, irrespective of final PTB diagnosis, which remained high during follow up. Future work should include investigating the whole respiratory ecosystem in combination with pathogen- specific immune responses.
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Metadata
Title
High burden of viral respiratory co-infections in a cohort of children with suspected pulmonary tuberculosis
Authors
M. M. van der Zalm
E. Walters
M. Claassen
M. Palmer
J. A. Seddon
A.M. Demers
M. L. Shaw
E. D. McCollum
G. U. van Zyl
A. C. Hesseling
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Infectious Diseases / Issue 1/2020
Electronic ISSN: 1471-2334
DOI
https://doi.org/10.1186/s12879-020-05653-9

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