Severe Lower Respiratory Tract Infections Are Associated with Human Adenovirus in Hospitalised Children in a High HIV Prevalence Area

Overview

Journal Afr J Thorac Crit Care Med

Date 2024 Aug 22

PMID 39171152

Authors

N Marafungana

K L Naidoo

L Gounder

R Masekela

Affiliations

Soon will be listed here.

Abstract

Background: Viral causes of lower respiratory tract infections (LRTIs) are associated with increased mortality in children aged <5 years (U5). Human adenovirus (HAdV) has been associated with severe LRTI; however, its relationship with HIV and malnutrition in South Africa (SA) is not understood.

Objectives: To identify the prevalence of and factors associated with HAdV LRTIs in hospitalised U5 childen.

Methods: Clinical and viral data on U5 children hospitalised with severe LRTI from January 2018 to June 2020 at King Edward VIII Hospital, Durban, SA, including results of a multiplex polymerase chain reaction (PCR) panel assay for respiratory viruses, were retrieved from inpatient files and laboratory databases and retrospectively analysed. Standard descriptive statistics and Pearson's χ², Fisher's exact and Mann-Whitney tests were used to determine significant associations with HAdV LRTI.

Results: Among the 206 viral assays analysed (15.6% of all LRTI admissions), HAdV was the most common virus identified. The cohort had a median (interquartile range) age of 5 (2 - 13) months, 47.3% had perinatal HIV exposure, and 34.5% had severe acute malnutrition (SAM). No seasonal pattern with HAdV could be demonstrated. SAM and prematurity were significant risk factors for readmission, and perinatal HIV exposure was a significant risk factor for presence of multiple viruses on analysis of a respiratory specimen. Detection of HAdV was not associated with an increased risk of requiring oxygen or ventilatory support.

Conclusion: HAdV was the most common virus found on analysis of multiplex PCR panel results in children hospitalised with severe LRTI in SA, where high rates of HIV exposure may result in increased susceptibility to viral co-infections. The role of HAdV as a cause of severe LRTI in SA infants, who have high rates of HIV exposure, requires greater scrutiny.

Study Synopsis: This study provides retrospective data identifying human adenovirus (HAdV) as the most common cause of severe lower respiratory tract infection (LRTI) in children aged <5 years (U5). The impact of respiratory syncytial virus as a common pathogen in children is well established. The study confirms anecdotal evidence that HAdV is an important disease-causing pathogen associated with LRTI. Children with perinatal HIV exposure and severe acute malnutrition (SAM) may be particularly susceptible. HAdV must be considered a major cause of severe LRTI in U5 children. Children with LRTI who had perinatal HIV exposure and those with SAM need to be tested for HAdV and to be monitored for severe disease.

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