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Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis
Published on: September 7, 2022
Beta-herpesviruses in febrile children with cancer
Stephanie Yee-Guardino1, Kate Gowans, Belinda Yen-Lieberman
1Cleveland Clinic Children's Hospital, Cleveland, OH, USA.
Insights
Cytomegalovirus and human herpesvirus 6B (HHV-6B) are common causes of fever in children with cancer. These viruses should be considered in the differential diagnosis for febrile illnesses in this population.
Area of Science:
- Infectious Diseases
- Pediatric Oncology
- Virology
Background:
- Febrile illnesses in pediatric oncology patients can have various etiologies.
- Beta-herpesviruses, including cytomegalovirus (CMV) and human herpesvirus 6B (HHV-6B), are known opportunistic pathogens.
Purpose of the Study:
- To investigate the prevalence of beta-herpesviruses in febrile pediatric oncology patients.
- To compare the incidence of these viral infections with a reference group of febrile pediatric solid-organ transplant recipients.
Main Methods:
- A cross-sectional study was conducted.
- Polymerase chain reaction (PCR) was used to detect viral DNA.
- Patients were categorized into two groups: pediatric oncology patients and pediatric solid-organ transplant recipients.
Main Results:
- Cytomegalovirus (CMV) was detected in 3.3% of cancer patients and 33% of transplant recipients.
- Human herpesvirus 6B (HHV-6B) DNAemia was found in 13% of cancer patients and 33% of transplant recipients.
- HHV-6B was more prevalent within 6 months of initiating immunosuppression in cancer patients (p=0.050).
- HHV-6A and HHV-7 were not detected.
Conclusions:
- CMV and HHV-6B are significant causes of febrile disease in pediatric oncology patients.
- These viruses should be included in the differential diagnosis for fever in immunocompromised children.
- Early detection and consideration of these viral infections are crucial for appropriate management.
Abstract:
We conducted a cross-sectional study of beta-herpesviruses in febrile pediatric oncology patients (n = 30), with a reference group of febrile pediatric solid-organ transplant recipients (n = 9). One (3.3%) of 30 cancer patients and 3 (33%) of 9 organ recipients were PCR positive for cytomegalovirus. Four (13%) of 30 cancer patients and 3 (33%) of 9 transplant recipients had human herpesvirus 6B (HHV-6B) DNAemia, which was more common within 6 months of initiation of immune suppression (4 of 16 vs. 0 of 14 cancer patients; p = 0.050). HHV-6A and HHV-7 were not detected. No other cause was identified in children with HHV-6B or cytomegalovirus DNAemia. One HHV-6B-positive cancer patient had febrile disease with concomitant hepatitis. Other HHV-6B-positive children had mild "viral" illnesses, as did a child with primary cytomegalovirus infection. Cytomegalovirus and HHV-6B should be included in the differential diagnosis of febrile disease in children with cancer.
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