David Prangishvili*
Archaeal viruses Study Group Chair
Institut Pasteur 
Department of Microbiology 
25, rue du Dr. Roux 
75015 Paris, France 
Tel: +33 (0)144-38-9119
E-mail: david.prangishvili@pasteur.fr

Mart Krupovic* 
Institut Pasteur 
Department of Microbiology 
25, rue du Dr. Roux 
75015 Paris, France 
Tel: +33(0)1-40-61-37 22 
E-mail: krupovic@pasteur.fr

* to whom correspondence should be addressed

The chapter in the Ninth ICTV Report, which served as the template for this chapter, was contributed by Prangishvili, D.