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  • Title: Few but severe viral infections in children with cancer: a prospective RT-PCR and PCR-based 12-month study.
    Author: Christensen MS, Nielsen LP, Hasle H.
    Journal: Pediatr Blood Cancer; 2005 Dec; 45(7):945-51. PubMed ID: 16047356.
    Abstract:
    BACKGROUND: Treatment of low-risk febrile episodes with oral administered antibiotics at home is a new approach in pediatric oncology and protective isolation is loosened in more centers. The impact of viral respiratory infections in febrile diseases in this population is still unclear in terms of occurrence and morbidity. PROCEDURE: A prospective follow-up study of all febrile episodes during 12 months in a pediatric oncology department with a high level of protective isolation was set-up with expanded molecular viral examinations. Reverse transcriptase polymerase chain reaction (RT-PCR) and PCR diagnostics of ten viruses, two atypical bacteria, and one fungus were performed and clinical information on all infections was registered. RESULTS: A total of 250 febrile episodes in 66 patients were registered. In all, 198 respiratory secretions, predominantly oral washes, and 165 anal swabs were analyzed. Twenty-two infections were diagnosed: 7 rhinovirus infections, 4 respiratory syncytial virus (RSV) infections, 2 herpes simplex virus (HSV) infections, 2 varicella-zoster-virus (VZV) infections, 1 influenza B virus infection, 1 parainfluenza virus type 3 infection (PIV3), 1 human metapneumovirus (HMPV) infection, 1 enterovirus infection, 0 adenovirus infections, 0 influenza A virus infections, and 3 non-viral pneumonias: 1 M. Pneumonia, 1 C. Pneumonia, and 1 P. Carinii. The detected pathogens correlated well to the clinical disease. Patients with viral infections were as affected as patients with bacteria in the blood. One of 19 viral infections was lethal, a RSV pneumonia. C-reactive protein concentrations were not able to distinguish viral infections from bacteremias. CONCLUSIONS: The applied sampling method was acceptable and molecular diagnosis of viruses, atypical bacteria and P. Carinii increased the microbiological verification of infections by 35%. Viral infections were few in our protected population but caused severe infectious complications in these patients.
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