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Applied and Environmental Microbiology, July 2001, p. 3322-3324, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3322-3324.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Effect of High-Rate Algal Ponds on Viability of Cryptosporidium parvum Oocysts

S. Araki,1,* S. Martín-Gomez,2 E. Bécares,1 E. De Luis-Calabuig,1 and F. Rojo-Vazquez2

Área de Ecología, Instituto del Medio Ambiente,1 and Departamento de Patología Animal (Sanidad Animal),2 Universidad de León, 24071 León, Spain

Received 8 December 2000/Accepted 2 May 2001

The physicochemical conditions of high-rate algal ponds were responsible for a more than 97% reduction in the infectivity of Cryptosporidium parvum oocysts in neonatal mice. The use of semipermeable bags of cellulose showed that pH, ammonia, and/or light seems to be a major factor for the inactivation of oocysts in wastewater, supporting the importance of alga-based systems for safer reuse of treated wastewater.

* Corresponding author. Mailing address: Instituto del Medio Ambiente, C/ La Serna s/n, León University, 24071 León, Spain. Phone: 34 987 291568. Fax: 34 987 291501. E-mail: degma{at}unileon.es.

Applied and Environmental Microbiology, July 2001, p. 3322-3324, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3322-3324.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.




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