A new method for eradicating human immunodeficiency virus (HIV) and other e
nveloped viruses is proposed. The method is based on the highly symmetric s
tructure (e.g. icosahedral) of many viruses, which leads to a well-defined
resonant frequency of ultrasound in the GHz range and which may be specific
ally absorbed by these structures and may subsequently lead to their irreve
rsible damage. (C) 2000 Harcourt Publishers Ltd.