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Viruses 2010, 2(12), 2803-2830; doi:10.3390/v2122803

Cidofovir Activity against Poxvirus Infections

Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KULeuven, Minderboredersstraat 10, B-3000 Leuven, Belgium
Author to whom correspondence should be addressed.
Received: 10 November 2010 / Revised: 9 December 2010 / Accepted: 10 December 2010 / Published: 22 December 2010
(This article belongs to the Special Issue Antivirals Against Poxviruses)
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Cidofovir [(S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine, HPMPC] is an acyclic nucleoside analog approved since 1996 for clinical use in the treatment of cytomegalovirus (CMV) retinitis in AIDS patients. Cidofovir (CDV) has broad-spectrum activity against DNA viruses, including herpes-, adeno-, polyoma-, papilloma- and poxviruses. Among poxviruses, cidofovir has shown in vitro activity against orthopox [vaccinia, variola (smallpox), cowpox, monkeypox, camelpox, ectromelia], molluscipox [molluscum contagiosum] and parapox [orf] viruses. The anti-poxvirus activity of cidofovir in vivo has been shown in different models of infection when the compound was administered either intraperitoneal, intranasal (aerosolized) or topically. In humans, cidofovir has been successfully used for the treatment of recalcitrant molluscum contagiosum virus and orf virus in immunocompromised patients. CDV remains a reference compound against poxviruses and holds potential for the therapy and short-term prophylaxis of not only orthopox- but also parapox- and molluscipoxvirus infections.
Keywords: cidofovir; poxviruses; acyclic nucleoside analog cidofovir; poxviruses; acyclic nucleoside analog

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Andrei, G.; Snoeck, R. Cidofovir Activity against Poxvirus Infections. Viruses 2010, 2, 2803-2830.

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