This project has taken longer than anticipated and I thank Denis Hoffmann for his patience and for giving me the opportunity to write it in the first place.
Special thanks to Peter Spradbrow for ongoing support and generosity with time and knowledge.
Thanks also to the following people who have all contributed to the project and offered support:
Robyn Alders, Mary Young, Joanne Meers, Graham Burgess, Philemon Wambura, Joram Buza, Halifa Msami, Joseph Awuni, S.B. Chamling Rai, Karma Rinzin, Berhan Demeke Meshesha and Denise O'Rourke.
Assistance with the illustrations was provided by Sharka Marvilla of Sharka Designs and Naomi Mason of the University of Queensland.
Photographs were taken by the author and are from a collection kept at the John Francis Virology Laboratory.
