title: Temporal trends in the discovery of human viruses.
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.
authors.affiliation: Centre for Infectious Diseases, Ashworth Laboratories, Kings Buildings, University of Edinburgh, Edinburgh EH9 3JT, UK. mark.woolhouse@ed.ac.uk
authors.forename: Mark E J
authors.initials: ME
authors.lastname: Woolhouse
authors.forename: Richard
authors.initials: R
authors.lastname: Howey
authors.forename: Eleanor
authors.initials: E
authors.lastname: Gaunt
authors.forename: Liam
authors.initials: L
authors.lastname: Reilly
authors.forename: Margo
authors.initials: M
authors.lastname: Chase-Topping
authors.forename: Nick
authors.initials: N
authors.lastname: Savill
mesh_terms: D000818:Animals; D021821:Communicable Diseases, Emerging / Q000821:virology*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D016014:Linear Models; D011336:Probability; D011634:Public Health / Q000266:history / Q000706:statistics & numerical data / Q000639:trends*; D012044:Regression Analysis; D014777:Virus Diseases / Q000821:virology*; D014780:Viruses / Q000145:classification*; D015047:Zoonoses / Q000821:virology