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Original

Survival of Human Immunodeficiency Virus Type 1 After Rinsing Injection Syringes with Different Cleaning Solutions

, Ph.D., , B.A., , M.S. & , Ph.D.
Pages 581-600 | Published online: 18 Mar 2004
 

Abstract

Bleaching of syringes has been advocated to prevent HIV transmission among injection drug users (IDUs). Several reports indicate that IDUs use household products to disinfect syringes instead of bleach. To test their disinfection efficacy, we performed syringe-rinsing simulations with a range of agents used by IDUs trying to disinfect their syringes. No viable HIV-1 was recovered from syringes rinsed with bleach diluted 1 : 10. Bleach stored at 37°C and rubbing alcohol performed better than water and the other liquids tested, but less well than bleach 1 : 10. Rinsing syringes with the other liquids was similar to rinsing with water alone. Increasing the rinsing volume did not always increase the effect of rinsing, but the addition of a second rinse consistently increased rinsing efficacy. Bleaching remains the most effective disinfectant among those tested. It is important that IDUs learn the proper techniques for bleach storage and syringe decontamination. Other household products are not effective disinfectants and should be avoided. Because access to sterile syringes may be restricted by laws, public policy, and police practices, bleach retains its importance in the control of the HIV-1 epidemic among IDUs.

Resumen

Es comun que se recomiende a los usuarios de droga s inyectables (UDI) que desinfecten el material de inyección con cloro (lejia o blanqueador), antes de reutilizarlo. En la literatura hay indicaciones de que UDI algunas veces utilizan productos caseros para limpiar sus jeringuillas en vez de cloro. En este estudio, hemos simulado en laboratorio jeringuillas contaminadas con el virus de la inmunodeficiencia humana (VIH) y hemos comparado la eficacia de diferentes productos caseros en la desinfeccion de las jeringuillas. Comparamos el efecto del agua, cloro diluido 1 : 10, cloro conservado a 37 grados, jabon diluido 1 : 10, alcohol, vino fortificado y peroxido de hidrogeno. No se aislo VIH de jeringuillas que fueron limpiadas con cloro 1 : 10. El cloro almazenado a 37 grados y el alcohol funcionaron mejor que el agua pero, fueron menos efectivos que el cloro 1 : 10 en eliminar VIH de las jeringuillas. Los otros productos analisados tuvieron una eficacia equivalente a los enjuagues con agua. El uso de un mayor volumen al enjuagar las jeringuillas no mejoro consistentemente el efecto del enguaje pero en cambio el aumento en el numero enjuagues incrementa sustancialmente la eficiencia del mismo. Cloro es es mejor desinfectante que hay y es importante que se instruya a los UDI a almazenar debidamente el cloro que utilizan para desinfectar el material de inyeccion. Otros productos caseros no son eficientes desinfectantes para VIH y no deben ser utilizados. Como leyes de restriccion de venta y distribucion de jeringuillas, politicas de salud publica y policias locales limitan el acceso a seringuillas esteriles el uso de cloro continua teniendo importancia en el control de VIH entre los UDI.

Résumé

La désinfection des seringues à l’eau de Javel a été préconisée pour empêcher la transmission de VIH aux gens qui s’injectent des drogues (IDs). Plusieurs études indiquent que les IDs utilisent des produits ménagers pour désinfecter leurs seringues plutôt que de l’eau de Javel. Pour evaluer l’efficacité de ces désinfectants, nous avons simulé des rinçages de seringues avec les produits couramment utilisés par les IDs. Aucun VIH-1 viable n’a été récupéré des les seringues rincées à l’eau de Javel dilué 1/10. Quoique plus performants que l’eau distillée et que les autres produits testés, l’eau de javel chauffée a 37°C et l’alcool isopropylique (70%) étaient néanmoins moins efficaces que l’eau de Javel 1/10. Le rinçage des seringues avec d’autres produits a donné le même résultat que le rinçage à l’eau. L’augmentation du volume de produit utilisé n’a pas toujours augmenté l’efficacité du rinçage – ce qui a cependant été attaint de maniére reproductible en rajoutant un deuxiême rinçage. La javelization demeure le désinfectant le plue efficace parmi ceux examinés. Il est important que les IDs apprennent les techniques appropriées pour le stockage de l’eau de Javel et la désinfection des seringues. D’autres produits ménagers ne sont pas efficaces et doient donc être évités. Puisque l’accès aux seringues stériles peut être limité par des loi, l’eau de Javel garde une place importante dans le contrôle de l’épidémie VIH-1 parmi les IDs.

Additional information

Notes on contributors

Nadia Abdala

Nadia Abdala received her D.V.M. from the Federal University of Uberlandia, Brazil, and her Ph.D. from the Ludwig Maximilian University in Munich, Germany, in 1993. She is using her experience in clinical virology to investigate epidemiological questions related to HIV-1 transmission among drug injectors.

Michelle Crowe

Michelle Crowe worked with our group after she received her baccalaureate degree in biochemistry from the University of Lethbridge, in Canada, in 1998. She is currently a graduate student in exercise physiology at Washington State University in Spokane, Washington.

Yanis Tolstov

Yanis Tolstov received his Master degree in biochemistry in 2000 and is currently a Fogarty fellow at Yale University. He has been investigating aspects of injection drug use unique to Russia to complete his Ph.D. degree at the St. Petersburg State University, Russia.

Robert Heimer

Robert Heimer is an associate professor in the Departments of Epidemiology and Public Health and Pharmacology at the Yale University School of Medicine. Dr. Heimer received his B.A. from Columbia College and his Ph.D. in pharmacology from Yale University in 1988. He is the principal investigator of studies that combine HIV virology and anthropological investigations of the injection practices of drug users.

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