• Postgraduate medicine · Nov 2024

    Unmasking bocavirus: is it a co-infectious agent or an actual respiratory pathogen?

    • Damla Hanalioglu, Selin Cetin, Meltem Cetin, Bedia Dinc, Leman Akcan Yildiz, Mustafa Oguz Kaynak, Funda Kurt, Halise Akca, Saliha Senel, and Can Demir Karacan.
    • Pediatric Emergency Clinic, Ankara Bilkent City Hospital, Ankara, Türkiye.
    • Postgrad Med. 2024 Nov 1; 136 (8): 864874864-874.

    ObjectivesAlthough human bocavirus (HBoV) is primarily linked to respiratory tract infections, its exact role as a respiratory pathogen remains unclear. This study aims to investigate HBoV detection rates, as well as clinical, laboratory, microbiological, and radiological characteristics, length of stay in the emergency department (ED), rate of hospitalization, and severity of illness in cases where HBoV is detected in respiratory secretions.MethodsWe conducted a retrospective analysis of all consecutive patients under 18 years who visited a large-volume tertiary pediatric ED from January to December 2023 and tested positive for HBoV in their respiratory viral panel (RVP).ResultsAmong the 14,315 patients who underwent RVP testing during the study period, 591 (4%) tested positive for HBoV. After excluding those with incomplete data, 528 patients (57% male) were included in the analyses. The median age was 2.8 [1.2-4.9] years. The most common symptoms were cough (67%), fever (58%), runny nose/nasal congestion/sore throat (34%), and respiratory distress (24%). Thirty percent of the patients had a history of antibiotic use before admission. Thirteen percent of the patients had at least one chronic illness. Co-infection with HBoV occurred in 37% of the patients, with respiratory syncytial virus (RSV) being the most frequently co-detected virus (45%). Lymphopenia was documented in 12% of patients, and 36% had elevated C-reactive protein levels (median 21 [12-38] g/dl). Abnormal chest X-rays were noted in 85% of patients. The management approach included outpatient care for more than half of the patients (69%). Clinical severity was classified as high in 11% of patients (n = 60), necessitating ICU admission.ConclusionAlthough typically mild, HBoV infections can escalate to severe respiratory illnesses, requiring respiratory support and intensive care.

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