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Network of sexual contacts and sexually transmitted HIV infection in Burkina Faso

Latora, Vito and Nyamba, André and Simporé, Jacques and Sylvette, Bahiré and Diane, Sandwidi and Sylvére, Bukiki and Musumeci, Salvatore (2006) Network of sexual contacts and sexually transmitted HIV infection in Burkina Faso. Journal of Medical Virology, Vol. 78 (6), p. 724-729. eISSN 1096-9071. Article.

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DOI: 10.1002/jmv.20614

Abstract

Two thirds of the people who have been infected by human immunodeficiency virus (HIV) in the world live in Sub-Saharan African countries. The results of a study measuring the degree distribution of the network of sexual contacts in Burkina Faso are described. Such a network is responsible for the spread of sexually transmitted diseases, and in particular of HIV. It has been found that the number of different sexual partners reported by males is a power law distribution with an exponent γ= 2.9 (0.1). This is consistent with the degree distribution of scale-free networks. On the other hand, the females can be divided into two groups: the prostitutes with an average of 400 different partners per year, and females with a stable partner, having a rapidly decreasing degree distribution. Such a result may have important implications on the control of sexually transmitted diseases and in particular of HIV. Since scale-free networks have no epidemic threshold, a campaign based on prevention and anti-viral treatment of few highly connected nodes can be more successful than any policy based on enlarged but random distribution of the available anti-viral treatments. J. Med. Virol. 78:724-729, 2006. © 2006 Wiley-Liss, Inc.

Item Type:Article
ID Code:2491
Status:Published
Refereed:Yes
Uncontrolled Keywords:Sexual contact network, Burkina Faso, scale-free network, HIV, sexually transmitted diseases
Subjects:Area 06 - Scienze mediche > MED/38 Pediatria generale e specialistica
Divisions:001 Università di Sassari > 01 Dipartimenti > Neuroscienze, scienze materno infantili
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di genetica delle popolazioni, Alghero
Publisher:Wiley-Liss
eISSN:1096-9071
Deposited On:18 Aug 2009 10:07

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