Author: Woolhouse, Mark; Scott, Fiona; Hudson, Zoe; Howey, Richard; Chase-Topping, Margo
Title: Human viruses: discovery and emergence Document date: 2012_10_19
ID: 0i59vlyd_27
Snippet: Level 4 represents the subset of viruses that are sufficiently transmissible between humans to cause major outbreaks and/or become endemic in human populations without the requirement of a non-human reservoir. This equates with the epidemiological condition R 0 . 1 [33] , i.e. a single primary case generates, on average, more than one secondary case. This is a function of both the transmissibility of the virus (how infectious an infected host is,.....
Document: Level 4 represents the subset of viruses that are sufficiently transmissible between humans to cause major outbreaks and/or become endemic in human populations without the requirement of a non-human reservoir. This equates with the epidemiological condition R 0 . 1 [33] , i.e. a single primary case generates, on average, more than one secondary case. This is a function of both the transmissibility of the virus (how infectious an infected host is, and for how long) and properties of the human population (how human demography and behaviour affect opportunities for transmission).
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