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The Study aims to prospectively survey the incidence of respiratory virus infections using molecular methodologies, in children undergoing hematopoietic stem cell transplantation
Samples will be collected with a nasopharyngeal wash and processed for direct fluorescent antibody, culture and Polymerase chain reaction (PCR)
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nasopharyngeal Washes | Other | A total of eight nasopharyngeal washes will be done at the following time points: Prior to conditioning, on the day of admission and thereafter every two weeks until day +100 (Day +14, 28, 42, 56, 70, 84 and 98). To allow for flexibility over the weekends and holidays the specimen may be collected on the scheduled day ± 3 days. The baseline sample obtained prior to conditioning is required for patient to be considered evaluable. |
| Measure | Description | Time Frame |
|---|---|---|
| Incidence of RV infection at any time after transplant: The day of onset of an infection is defined as the day when the first positive diagnostic test was performed. | All patients will be followed until day +100 after the HSCT. |
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Inclusion Criteria:
Exclusion Criteria:
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Children, birth to 18 years old, within the first 100 days of a hematopoietic stem cell transplant who are either asymptomatic, or symptomatic with an upper respiratory tract infection (URTI) or a lower respiratory tract infection (LRTI).
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| Name | Affiliation | Role |
|---|---|---|
| Ashok Srinivasan, MD | St. Jude Children's Research Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| St. Jude Children's Research Hospital | Memphis | Tennessee | 38105 | United States |
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| Label | URL |
|---|---|
| St. Jude Children's Research Hospital | View source |
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Nasopharyngeal washes Fluorescent antibody detection Respiratory viral culture
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| Fluorescent antibody detection | Other | For IF (Direct IF for hHRSV and indirect IF for the other viruses), the specimens will be spotted onto glass slides. Samples without respiratory epithelial cells will be considered inconclusive. Labelled antibodies against Flu A, Flu B, HPIV 1 to 3, RSV, hMPV and Adv will be used. |
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| Respiratory viral culture | Other | Shell vial culture specimens will be inoculated and incubated for 48 hours. The following RVs: Flu A, Flu B, HPIV 1-3, RSV, Adv and hMPV will be identified on the basis of cytopathic effects in cell cultures and confirmed by staining with fluorescein-conjugated monoclonal antibodies. |
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