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New paper on mixing patterns in hospital ward

4/10/2011

 
Close encounters in a pediatric ward: measuring face-to-face proximity and mixing patterns with wearable sensors
L Isella, M Romano, A Barrat, C Cattuto, V Colizza, W Van den Broeck, F Gesualdo, E Pandolfi, L Rava, C Rizzo, AE Tozzi
PLoS ONE 6(2), e17144 (2011)
Picture
Contact matrices defined on the classes of individuals. Matrices are displayed for the number of contacts (panel A), the number of distinct contacts (panel B), and the cumulative time in contact (panel C). The matrix entry for classes X (row) and Y (column) is the median value of the node strengths for individuals of class X, computed on the contacts they had with individuals of class Y; the asymmetry of the matrices depends on the different numbers of individuals populating each class. Individuals of class X that did not have contacts with individuals of class Y count as nodes with zero strength, i.e., they affect the median value for the corresponding matrix entry. To increase the readability of the figure, matrix entries are grayscale-coded according to the median values, with the lightest and darkest shade of gray respectively corresponding to the minimum and maximum value for each matrix. Contact durations are expressed in minutes and normalized to a 24-hour interval.


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