Laboratory of Virology, CNRS EP 57, Pitie Salpetriere Hospital (N Dupin MD; M Grandadam PhD; V Calvez MD; J T Aubin PhD; Prof J M Huraux MD; Prof H Agut MD PhD); and Department of Dermatology, Tarnier Hospital (N Dupin; I Gorin MD; S Havard MD; F Lamy MD; Prof M Leibowitch MD; Prof J P Escande MD), Paris, FranceCorrespondence: Dr Nicolas Dupin, Service de Dermatologie, Hopital Tarnier, Groupe Hospitalier Cochin-Port-Royal, 75006 Paris, France.