HIV-1 Non-B Subtypes and Drug Resistance in Immigrants in Southern Spain
Author Information
Author(s): Beatriz de Felipe, Pilar Pérez-Romero, María Abad-Fernández, Felipe Fernandez-Cuenca, Francisco J Martinez-Fernandez, Mónica Trastoy, Rosario del Carmen Mata, Luis F López-Cortés, Manuel Leal, Pompeyo Viciana, Alejandro Vallejo
Primary Institution: Infectious Diseases Service, IBIS, Hospital Universitario Virgen del Rocio, Seville, Spain
Hypothesis
What is the prevalence of non-B HIV-1 subtypes and associated drug resistance mutations among immigrants in Southern Spain from 2000 to 2010?
Conclusion
The prevalence of non-B HIV-1 subtypes among immigrants in Southern Spain has significantly increased to 29.6%, with a notable presence of drug resistance mutations.
Supporting Evidence
- 29.6% of immigrants were infected with non-B HIV-1 subtypes.
- 51.7% of non-B subtype infections were CRF02-AG, primarily from Sub-Saharan Africa.
- Resistance mutations were found in 7% of treatment-naïve patients and 21% among those under HAART.
Takeaway
This study found that many immigrants in Southern Spain have a type of HIV that is different from what is usually seen in Spain, and some of them have mutations that make the virus harder to treat.
Methodology
The study involved amplifying and sequencing specific regions of the HIV-1 genome from immigrant patients, followed by analysis of drug resistance mutations.
Limitations
The study could not test plasma samples of antiretroviral-experienced patients before therapy to determine primary resistance mutations.
Participant Demographics
{"gender_distribution":"69.4% male","age":"35 years (median)","geographical_distribution":{"Central-South America":"47.9%","Western Europe":"14.3%","Sub-Saharan Africa":"19.4%","Northern Africa":"5.1%","Eastern Europe":"10.2%","North America":"1%","Asia":"1%"}}
Statistical Information
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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