By I.C. Hancock, I.R. Poxton
By Gerald W. Tannock
By R K Dart (Loughborough University of Technology, UK)
By Stephen Gillespie, Kathleen Bamford
By Day, Andrew, Mayne, Philip, Philip D.
By Jane B. Walker (Onderstepoort Veterinary Institute, Pretoria), James E. Keirans (Georgia Southern University), Ivan G. Horak (University of Pretoria)
By Brian W. J. Mahy (Coordinating Center for Infectious Diseases, CDC, Atlanta, GA, USA), Marc H.V. van Regenmortel (ESBS, CNRS, Strasbourg, France)