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Volume 19, Number 6—June 2013

Research

Transmission Potential of Rift Valley Fever Virus over the Course of the 2010 Epidemic in South Africa

Raphaëlle MétrasComments to Author , Marc Baguelin, W. John Edmunds, Peter N. Thompson, Alan Kemp, Dirk U. Pfeiffer, Lisa M. Collins, and Richard G. White
Author affiliations: Royal Veterinary College, Hatfield, UK (R. Métras, D.U. Pfeiffer); London School of Hygiene and Tropical Medicine, London, UK (R. Métras, M. Baguelin, W.J. Edmunds, R.G. White); Health Protection Agency, London (M. Baguelin); University of Pretoria, Pretoria, South Africa (P.N. Thompson); National Institute for Communicable Diseases, Sandringham, South Africa (A. Kemp); Queen’s University Belfast, Belfast, Northern Ireland, UK (L.M. Collins)

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Figure 3

Distribution of D0 by time and distance [D0(s,t)]. D0(s,t) is a measure of spatiotemporal interaction between cases that was estimated by using the space–time K-function (19,20); the distribution is indicated by the pink dashed line. The green, yellow, and blue lines are the smoothed distributions, which were obtained with bandwidth values of 1, 3, and 5, respectively. A) Plot of D0(s,t) values by distance on day 1. B) D0(s,t) values by time at distance of 5 km. C) Plot of D0(s,t) values by dist

Figure 3. . Distribution of D0 by time and distance [D0(s,t)]. D0(s,t) is a measure of spatiotemporal interaction between cases that was estimated by using the space–time K-function (19,20); the distribution is indicated by the pink dashed line. The green, yellow, and blue lines are the smoothed distributions, which were obtained with bandwidth values of 1, 3, and 5, respectively. A) Plot of D0(s,t) values by distance on day 1. B) D0(s,t) values by time at distance of 5 km. C) Plot of D0(s,t) values by distance on day 5. D) D0(s,t) values by time at distance of 15 km.

Main Article

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