UNIGE document Scientific Article
previous document  unige:98821  next document
add to browser collection

Genotypic Resistance Tests Sequences Reveal the Role of Marginalized Populations in HIV-1 Transmission in Switzerland

Shilaih, Mohaned
Marzel, Alex
Yang, Wan Lin
Scherrer, Alexandra U
Schüpbach, Jörg
Böni, Jürg
Hirsch, Hans H
show hidden authors show all authors [1 - 16]
Published in Scientific Reports. 2016, vol. 6, 27580
Abstract Targeting hard-to-reach/marginalized populations is essential for preventing HIV-transmission. A unique opportunity to identify such populations in Switzerland is provided by a database of all genotypic-resistance-tests from Switzerland, including both sequences from the Swiss HIV Cohort Study (SHCS) and non-cohort sequences. A phylogenetic tree was built using 11,127 SHCS and 2,875 Swiss non-SHCS sequences. Demographics were imputed for non-SHCS patients using a phylogenetic proximity approach. Factors associated with non-cohort outbreaks were determined using logistic regression. Non-B subtype (univariable odds-ratio (OR): 1.9; 95% confidence interval (CI): 1.8-2.1), female gender (OR: 1.6; 95% CI: 1.4-1.7), black ethnicity (OR: 1.9; 95% CI: 1.7-2.1) and heterosexual transmission group (OR:1.8; 95% CI: 1.6-2.0), were all associated with underrepresentation in the SHCS. We found 344 purely non-SHCS transmission clusters, however, these outbreaks were small (median 2, maximum 7 patients) with a strong overlap with the SHCS'. 65% of non-SHCS sequences were part of clusters composed of >= 50% SHCS sequences. Our data suggests that marginalized-populations are underrepresented in the SHCS. However, the limited size of outbreaks among non-SHCS patients in-care implies that no major HIV outbreak in Switzerland was missed by the SHCS surveillance. This study demonstrates the potential of sequence data to assess and extend the scope of infectious-disease surveillance.
PMID: 27297284
Full text
Article (Published version) (464 Kb) - public document Free access
Research group Groupe Laurent Kaiser (virologie clinique) (668)
(ISO format)
SHILAIH, Mohaned et al. Genotypic Resistance Tests Sequences Reveal the Role of Marginalized Populations in HIV-1 Transmission in Switzerland. In: Scientific Reports, 2016, vol. 6, p. 27580. doi: 10.1038/srep27580 https://archive-ouverte.unige.ch/unige:98821

890 hits



Deposited on : 2017-11-09

Export document
Format :
Citation style :