Social networks and MRSA spreading in hospitals

Andrzej Jarynowski 1,2Fredrik Liljeros 3

1. UNESCO Chair of Interdysciplinary Studies, UWr (KUSI), pl. M. Borna 9, Wrocław 50-204, Poland
2. Jagiellonian University, Institute of Physics (IF UJ), Reymonta 4, Kraków 30-059, Poland
3. Stockholm University (SU), Stockholm SE-106 91, Sweden

Abstract

The bacterium meticillin resistant Staphylococcus aureus (MRSA) is known to be the largest care related the infection problem. We investigated the Common Care Registry containing information about all patient visits within Stockholm County during the outbreak period with registry over diagnosed MRSA cases. Methods to analyze the contact network of persons visiting the same care unit is developed within the project as well as methods to analyze in what way network structure affects the transmission of MRSA. We study matrixes of disease transition in hospitals population(infected versus people, who could sent infection). In stationary case: (a) We have matrixes of estimators of that probabilities and other statisical properties of contact networks. In time evolution case: (b) We divided outbreak in smaller, periodical intervals and looked at how MRSA was spreading in time. Quasi-MCMC(Markov chain Monte Carlo) method and artificial networks(main parameter is number of contacts during specific time interval) help us to understand real- and simulated-paths of disease transition. Matrices of probabilities (b) were used to find mechanism of change states (vectors of all population 0-health or 1-ill) and we can run quasi-MCMC to get most likely paths.

 

Auxiliary resources (full texts, presentations, posters, etc.)
  1. PRESENTATION: Social networks and MRSA spreading in hospitals, PDF document, version 1.4, 0.3MB
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Presentation: Oral at 5 Ogólnopolskie Sympozjum "Fizyka w Ekonomii i Naukach Społecznych", by Andrzej Jarynowski
See On-line Journal of 5 Ogólnopolskie Sympozjum "Fizyka w Ekonomii i Naukach Społecznych"

Submitted: 2010-09-19 16:56
Revised:   2010-10-18 20:57