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Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS
Published on: July 11, 2016
Population biology of multihost pathogens
M E Woolhouse1, L H Taylor, D T Haydon
1Centre for Tropical Veterinary Medicine, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, UK. mark.woolhouse@ed.ac.uk
Science (New York, N.Y.)
|May 16, 2001
Summary
Pathogen generalism, infecting multiple hosts, is common despite specialization benefits. High genetic diversity and transmission opportunities favor generalist pathogens, influencing virulence and epidemiology unpredictably.
Area of Science:
- Evolutionary Biology
- Pathogen Ecology
- Microbial Genetics
Background:
- Many pathogens infect multiple host species, including those of medical and veterinary significance.
- The evolutionary advantages of pathogen specialization are often outweighed by generalism in practice.
- Population biology struggles to fully explain the prevalence of generalist pathogens.
Purpose of the Study:
- To investigate the factors driving pathogen generalism over specialization.
- To understand the epidemiological and evolutionary consequences of pathogen host range.
- To explore the balance between evolutionary advantages and disadvantages of generalism.
Main Methods:
- Analysis of population biology principles related to pathogen host range.
- Examination of factors influencing pathogen genetic diversity and transmission.
- Comparison of taxonomic distributions of generalist and specialist pathogens.
Main Results:
- High genetic diversity and cross-species transmission opportunities predispose pathogens to generalism.
- Pathogen generalism leads to less predictable evolution of virulence and epidemiology.
- Closely related pathogens can exhibit significant differences in host range size.
Conclusions:
- Pathogen generalism is a significant evolutionary strategy shaped by genetic and transmission factors.
- Generalism complicates the prediction of pathogen evolution and disease spread.
- The evolutionary dynamics of host range are complex and finely balanced.
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