Transmission Potential of Rift Valley Fever Virus over the Course of the 2010 Epidemic in South Africa
Raphaëlle Métras , 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)
Figure 6. . Mean effective daily reproduction number (Re) during Rift Valley fever epidemic, South Africa, 2010. Re was estimated by using D0(s,t) values (dashed black line) and D0(s,t) smoothed surfaces obtained with bandwidth values of 1 (dark gray), 3 (medium gray), and 5 (light gray). D0(s,t) values were estimated by using the space–time K-function (19,20) and are a measure of the spatiotemporal proximity between cases. The horizontal dashed line represents the threshold value Re = 1.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.