Absence of detectable viremia in plasma and peripheral blood mononuclear cells from smallpox vaccinees: implications for blood safety
| Autor: | Indira Hewlett, Rolf E. Taffs, Pradip N Akolkar, Kumar Srinivasan |
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| Rok vydání: | 2006 |
| Předmět: |
Blood transfusion
viruses medicine.medical_treatment Immunology Cell Culture Techniques Viremia Vaccinia virus Mass Vaccination Virus chemistry.chemical_compound Chlorocebus aethiops Immunology and Allergy Medicine Smallpox Animals Humans Smallpox vaccine Vero Cells Clinical Trials as Topic Viral culture business.industry Contraindications Vaccination Hematology medicine.disease Virology Bioterrorism chemistry Leukocytes Mononuclear Vaccinia Safety business Smallpox Vaccine |
| Zdroj: | Transfusion. 46(9) |
| ISSN: | 0041-1132 |
| Popis: | BACKGROUND: Mass smallpox vaccination with live vaccinia virus has been considered as a preventive measure to counter bioterrorism involving smallpox. This has raised concerns about the possibility of vaccinia virus being transmitted from vaccinated blood donors to recipients. The results of this study could be used to define an appropriate deferral period for blood donors (vaccinated against smallpox) to ensure safety of the blood supply. STUDY DESIGN AND METHODS: A procedure was developed to culture vaccinia virus from plasma and peripheral blood mononuclear cells (PBMNCs) of vaccinees enrolled in three smallpox vaccine clinical trials. A total of 665 plasma and PBMNC samples were obtained from 95 vaccinated subjects. RESULTS: Vaccinia viremia was not detected by virus culture from plasma and PBMNC samples of healthy vaccinees 3 to 56 days after vaccination under our assay conditions. Plasma viremia assay had a sensitivity of approximately 66 plaque-forming units per mL with a Vero cell culture assay. CONCLUSION: The results of this study present evidence that in the case of mass vaccination, the risk of transmission of vaccinia virus by blood transfusion would likely be low. |
| Databáze: | OpenAIRE |
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