Download presentation
Presentation is loading. Please wait.
Published byAlan Dixon Modified over 9 years ago
2
Network theory 101
6
Temporal effects
8
What we are interested in What kind of relevant temporal /topological structures are there? Why? How does temporal structures in empirical networks affect disease spreading? Can we exploit these structures to slow down disease spreading?
9
Our datasets E-mail: 3,188 nodes, 309,125 contacts over 83 days Internet dating: 29,341 nodes, 536,276 contacts over 512 d Hospital: 295,107 nodes, 64,625,283 contacts over 8,521 d Prostitution: 16,730 nodes, 50,632 contacts over 2,232 d
10
Worst case scenario vs. null- model
11
Threshold in transmission probability
12
Threshold in disease dynamics
13
Two stage HIV model
14
A society-wide context
15
Temporal correlations speed up the outbreaks on a short time scale & slows it down on a longer time scale Temporal effects create distinct and comparatively high epidemic thresholds HIV can not spread in the prostitution data alone and probably does not serve as a reservoir of HIV in a society-wide perspective Half time summary
16
Temporal vaccination strategies Simulation setup
17
Temporal vaccination strategies Simulation setup
18
Temporal vaccination strategies Strategy “Recent”
19
Temporal vaccination strategies Strategy “Weight”
20
Relative efficiency, worst case
21
Relative efficiency, SIR model
22
Explanatory model
23
Temporal correlations do affect disease spreading and can be exploited in targeted vaccination The best vaccination strategy depends on the type of temporal structure Until more structural information is available, we recommend the strategy Recent Summary
24
deadline March 10 March 28 – April 20 nordita.org/network2011 March 28 – April 20 nordita.org/network2011 http://www.tp.umu.se/~holme/
25
SI model, vs ρ = 1
26
Parameter dependence, relative efficiency
27
Outbreak diversity
28
Contact sequence vs other types of models
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.