Education:
B.Sc. (1975) University of California, Irvine; Biological Sciences.
Ph.D. (1980) University of Washington; Zoology; specialization in
Ecology and Evolution.
Research:
Evolution of infectious diseases.
Most species of
organisms on our planet live in or on other organisms, yet we are just
beginning to understand one of the most basic questions about this
kind of life style: What determines the point to which such
associations evolve along the spectrum from mutualism to extreme
virulence. Because viruses and bacteria can evolve extremely rapidly,
evolutionary experiments can be conducted during a matter of months in
a laboratory setting. Research in my lab makes use of this rapid
evolution by studying experimentally the evolution of virulence. Using
a nuclear polyhedrosis virus that infects gypsy moths, we are
investigating how timing of transmission and genetic heterogeneity
within hosts alters evolution of virulence. My research on disease
also takes a comparative approach to the evolution of virulence, with
a focus on human diseases and the evolutionary effects of various
public health interventions.
Selected
Publications:
Ewald, Paul W. 1996. Guarding against the most dangerous emerging
pathogens: Insights from evolutionary biology. Emerging Infectious
Diseases 2:245-257.
Ewald, P. W. 1995.
The evolution of virulence: a unifying link between ecology and
parasitology. Journal of Parasitology 81:659-669.
Ewald, P. W. 1996.
Vaccines as evolutionary tools: The virulence-antigen strategy. In,
CONCEPTS IN VACCINE DEVELOPMENT, (S. H. E. Kaufmann, ed.), Walter de
Gruyter & Co:Berlin, pages 1-25.
Ewald, P. W. 1994.
EVOLUTION OF INFECTIOUS DISEASE. Oxford University Press, New York.