Author: Andrew J Stier; Marc G Berman; Luis M. A. Bettencourt
Title: COVID-19 attack rate increases with city size Document date: 2020_3_27
ID: aeminwf0_15
Snippet: The percent of people infected at the end of the outbreak is 1 − S ∞ /N which is larger in populations with larger R, such as in larger cities. A final point centers on the fraction of the population that must be removed from the susceptible class when R > 1 to stop the outbreak. This is often called the vaccination rate, p R , which is equally relevant in the context of social distancing (as only the means of the intervention and its duratio.....
Document: The percent of people infected at the end of the outbreak is 1 − S ∞ /N which is larger in populations with larger R, such as in larger cities. A final point centers on the fraction of the population that must be removed from the susceptible class when R > 1 to stop the outbreak. This is often called the vaccination rate, p R , which is equally relevant in the context of social distancing (as only the means of the intervention and its duration differ). In the SIR model, this is simply p R = 1 − 1/R, which shows that as cities get larger the distancing rate must also increase (see Supplementary Figure 1 ).
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