1. Morse, S.S. Factors in the emergence of infectious diseases. Emerg. Infect. Dis. 1, 7–15 (1995).
2. Heinz, F.X. et al. Family Flaviviridae, in Virus Taxonomy. 7th Report of the International Committee on Taxonomy of Viruses (eds. van Regenmortel, M.H. et al.) 859–878 (Academic, San Diego, 2000).
3. Lindenbach, B.D. & Rice, C.M. Flaviviridae: The viruses and their replication, in Fields Virology 4th edn (eds. Knipe, D.M. & Howley, P.M.) 991–1042 (Lippincott Williams & Wilkins, Philadelphia, 2001).
4. Westaway, E.G. & Blok, J. Taxonomy and evolutionary relationships of flaviviruses, in Dengue and Dengue Hemorrhagic Fever (eds. Gubler, D.J. & Kuno, G.) 147–173 (CAB International, London, 1997).
5. Marin, M.S., Zanotto, P.M., Gritsun, T.S. & Gould, E.A. Phylogeny of TYU, SRE, and CFA virus: different evolutionary rates in the genus Flavivirus. Virology 206, 1133–1139 (1995).