Effects of ozone and ultraviolet radiation treatments on the infectivity of Toxoplasma gondii oocysts

被引：63

作者：

Dumetre, Aurelien ^{[1
]}

Le Bras, Caroline ^{[2
]}

Baffet, Maxime ^{[2
]}

Meneceur, Pascale ^{[3
]}

Dubey, J. P. ^{[4
]}

Derouin, Francis ^{[3
]}

Duguet, Jean-Pierre ^{[2
]}

Joyeux, Michel ^{[2
]}

Moulin, Laurent ^{[1
]}

机构：

[1] Ctr Rech Expertise & Controle Eaux Paris, F-75014 Paris, France

[2] EAU DE PARIS, F-75675 Paris 14, France

[3] Univ Paris 07, Fac Med Denis Diderot, Lab Parasitol Mycol, F-75006 Paris, France

[4] ARS, USDA, Anim & Nat Resource Inst, Anim Parasit Dis Lab, Beltsville, MD 20705 USA

来源：

VETERINARY PARASITOLOGY | 2008年 / 153卷 / 3-4期

关键词：

Toxoplasma gondii; oocyst; water; UV; ozone; inactivation;

D O I：

10.1016/j.vetpar.2008.02.004

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Clinical toxoplasmosis in humans has been epidemiologically linked to the consumption of drinking water contaminated by Toxoplasma gondii oocysts. We evaluated killing of T gondii oocysts after ultraviolet (UV) or ozone treatments by bioassay in mice and/or cell culture. A 4-log inactivation of the oocyst/sporozoite infectivity was obtained for UV fluences >20 mJ cm(-2). In contrast, oocysts were not inactivated by ozone with an exposure (Ct) up to 9.4 mg min l(-1) in water at 20 degrees C. In conclusion, UV treatment can be an effective disinfection method to inactivate T. gondii oocysts in drinking water, but ozone did not show promise in this research. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：209 / 213

页数：5

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