Temporal trends in the discovery of human viruses |
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Authors: | Woolhouse Mark E J Howey Richard Gaunt Eleanor Reilly Liam Chase-Topping Margo Savill Nick |
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Affiliation: | Centre for Infectious Diseases, Ashworth Laboratories, Kings Buildings, University of Edinburgh, Edinburgh EH9 3JT, UK. mark.woolhouse@ed.ac.uk |
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Abstract: | On average, more than two new species of human virus are reported every year. We constructed the cumulative species discovery curve for human viruses going back to 1901. We fitted a statistical model to these data; the shape of the curve strongly suggests that the process of virus discovery is far from complete. We generated a 95% credible interval for the pool of as yet undiscovered virus species of 38-562. We extrapolated the curve and generated an estimate of 10-40 new species to be discovered by 2020. Although we cannot predict the level of health threat that these new viruses will present, we conclude that novel virus species must be anticipated in public health planning. More systematic virus discovery programmes, covering both humans and potential animal reservoirs of human viruses, should be considered. |
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Keywords: | discovery curve emerging infectious diseases public health surveillance virus species |
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