Browsing by Author "Sypsa, V."
Now showing items 1-14 of 14
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Big events in Greece and HIV infection among people who inject drugs
Nikolopoulos, Georgios K.; Sypsa, V.; Bonovas, Stefanos; Paraskeva, D.; Malliori-Minerva, Melpomeni; Hatzakis, A.; Friedman, Samuel R. (2015)Big Events are processes like macroeconomic transitions that have lowered social well-being in various settings in the past. Greece has been hit by the global crisis and experienced an HIV outbreak among people who inject ...
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Design and baseline findings of a large-scale rapid response to an HIV outbreak in people who inject drugs in Athens, Greece: The ARISTOTLE programme
Hatzakis, A.; Sypsa, V.; Paraskeva, D.; Nikolopoulos, Georgios K.; Tsiara, Chrissa G.; Micha, Katerina; Panopoulos, A.; Malliori-Minerva, Melpomeni; Psichogiou, M.; Pharris, Anastasia; Wiessing, L.; Laar, M. J. van de; Donoghoe, Martin; Heckathorn, Douglas D.; Friedman, Samuel R.; Jarlais, Don C. Des (2015)Aims: To (i) describe an intervention implemented in response to the HIV-1 outbreak among people who inject drugs (PWIDs) in Greece (ARISTOTLE programme), (ii) assess its success in identifying and testing this population ...
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Economic recession and emergence of an HIV-1 outbreak among drug injectors in Athens metropolitan area: A longitudinal study
Paraskeva, D.; Nikolopoulos, Georgios K.; Fotiou, Anastasios; Tsiara, Chrissa G.; Paraskeva, D.; Sypsa, V.; Lazanas, Marios; Gargalianos, Panagiotis; Psichogiou, M.; Skoutelis, A.; Wiessing, L.; Friedman, Samuel R.; Jarlais, Don C. Des; Terzidou, M.; Kremastinou, Jenny; Malliori-Minerva, Melpomeni; Hatzakis, A. (2013)Background: During 2011, a dramatic increase (1600%) of reported HIV-1 infections among injecting drug users (IDUs) was noted in Athens, Greece. We herein assess the potential causal pathways associated with this outbreak. ...
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Enhanced HIV-1 surveillance using molecular epidemiology to study and monitor HIV-1 outbreaks among intravenous drug users (IDUs) in Athens and Bucharest
Paraskeva, D.; Paraschiv, S.; Sypsa, V.; Nikolopoulos, Georgios K.; Tsiara, Chrissa G.; Magiorkinis, Gkikas; Psichogiou, M.; Flampouris, Andreas; Mardarescu, Mariana; Niculescu, I.; Batan, Ionelia; Malliori-Minerva, Melpomeni; Otelea, D.; Hatzakis, A. (2015)Background: A significant increase in HIV-1 diagnoses was reported among Injecting Drug Users (IDUs) in the Athens (17-fold) and Bucharest (9-fold) metropolitan areas starting 2011. Methods: Molecular analyses were conducted ...
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Evaluation of the limiting antigen avidity EIA (LAg) in people who inject drugs in Greece
Nikolopoulos, Georgios K.; Katsoulidou, Antigoni; Kantzanou, Maria; Rokka, C.; Tsiara, Chrissa G.; Sypsa, V.; Paraskeva, D.; Psichogiou, M.; Friedman, Samuel R.; Hatzakis, A. (2017)This analysis assessed the utility of the limiting antigen avidity assay (LAg). Samples of people who inject drugs (PWID) in Greece with documented duration of HIV-1 infection were tested by LAg. A LAg-normalized optical ...
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HIV/HBV co-infection and rate of antiretroviral treatment change after highly active antiretroviral treatment initiation in a cohort of HIV-infected patients in Greece
Nikolopoulos, Georgios K.; Paraskeva, D.; Hatzitheodorou, E.; Moschidis, Zissis; Sypsa, V.; Zavitsanos, X.; Kalapothaki, Victoria; Hatzakis, A. (2010)The current study investigated the impact of human immunodeficiency virus (HIV)/hepatitis B virus (HBV) co-infection on the rate of change of antiretroviral drugs after the initiation of highly active antiretroviral treatment ...
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Homelessness and other risk factors for HIV infection in the current outbreak among injection drug users in Athens, Greece
Sypsa, V.; Paraskeva, D.; Malliori-Minerva, Melpomeni; Nikolopoulos, Georgios K.; Panopoulos, A.; Kantzanou, Maria; Katsoulidou, Antigoni; Psichogiou, M.; Fotiou, Anastasios; Pharris, Anastasia; Laar, M. J. van de; Wiessing, L.; Jarlais, Don C. Des; Friedman, Samuel R.; Hatzakis, A. (2015)Objectives: We examined HIV prevalence and risk factors among injection drug users (IDUs) in Athens, Greece, during an HIV outbreak. Methods: We used respondent-driven sampling (RDS) to recruit 1404 IDUs to the Aristotle ...
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Impact of hepatitis B virus infection on the progression of AIDS and mortality in HIV-infected individuals: A cohort study and meta-analysis
Nikolopoulos, Georgios K.; Paraskeva, D.; Hatzitheodorou, E.; Moschidis, Zissis; Sypsa, V.; Zavitsanos, X.; Kalapothaki, Victoria; Hatzakis, A. (2009)Background. The effect of hepatitis B virus (HBV) infection on the natural history of human immunodeficiency virus (HIV) disease remains uncertain. Therefore, a retrospective cohort study was conducted to examine the ...
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Increasing prevalence of HIV-1 subtype a in Greece: Estimating epidemic history and origin
Paraskeva, D.; Magiorkinis, Emmanouil; Magiorkinis, Gkikas; Sypsa, V.; Paparizos, V.; Lazanas, Marios; Gargalianos, Panagiotis; Antoniadou, Anastasia; Panos, G.; Chrysos, Georgios; Sambatakou, H.; Karafoulidou, Anastasia; Skoutelis, A.; Kordossis, Theodoros; Koratzanis, Georgios; Theodoridou, M.; Daikos, Georgios L.; Nikolopoulos, Georgios K.; Pybus, O. G.; Hatzakis, A. (2007)Background. In North America and Europe, human immunodeficiency virus (HIV)-1 infection has typically been dominated by subtype B transmission. More recently, however, non-B subtypes have been increasingly reported in ...
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National income inequality and declining GDP growth rates are associated with increases in HIV diagnoses among people who inject drugs in Europe: A panel data analysis
Nikolopoulos, Georgios K.; Fotiou, Anastasios; Kanavou, Eleftheria; Richardson, C.; Detsis, Marios; Pharris, Anastasia; Suk, J. E.; Semenza, J. C.; Costa-Storti, Claudia; Paraskeva, D.; Sypsa, V.; Malliori-Minerva, Melpomeni; Friedman, Samuel R.; Hatzakis, A. (2015)Background: There is sparse evidence that demonstrates the association between macro-environmental processes and drug-related HIV epidemics. The present study explores the relationship between economic, socio-economic, ...
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Network characteristics of people who inject drugs within a new HIV epidemic following austerity in Athens, Greece
Tsang, M. A.; Schneider, J. A.; Sypsa, V.; Schumm, P.; Nikolopoulos, Georgios K.; Paraskeva, D.; Friedman, Samuel R.; Malliori-Minerva, Melpomeni; Hatzakis, A. (2015)Background: Greece experienced an unprecedented increase in HIV cases among drug injectors in 2011 after economic crisis. Network-level factors are increasingly understood to drive HIV transmission in emerging epidemics. ...
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A network intervention that locates and intervenes with recently HIV-infected persons: The Transmission Reduction Intervention Project (TRIP)
Nikolopoulos, Georgios K.; Pavlitina, E.; Muth, Stephen Q.; Schneider, J. A.; Psichogiou, M.; Williams, L. D.; Paraskeva, D.; Sypsa, V.; Magiorkinis, Gkikas; Smyrnov, P.; Korobchuk, Anya; Vasylyeva, T. I.; Skaathun, B.; Malliori-Minerva, Melpomeni; Kafetzopoulos, Evangelos; Hatzakis, A.; Friedman, Samuel R. (2016)Early treatment, soon after infection, reduces HIV transmissions and benefits patients. The Transmission Reduction Intervention Project (TRIP) evaluated a network intervention to detect individuals recently infected (in ...
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Rapid Decline in HIV Incidence among Persons Who Inject Drugs during a Fast-Track Combination Prevention Program after an HIV Outbreak in Athens
Sypsa, V.; Psichogiou, M.; Paraskeva, D.; Nikolopoulos, Georgios K.; Tsiara, Chrissa G.; Paraskeva, D.; Micha, Katerina; Malliori-Minerva, Melpomeni; Pharris, Anastasia; Wiessing, L.; Donoghoe, Martin; Friedman, Samuel R.; Jarlais, Don Des; Daikos, Georgios L.; Hatzakis, A. (2017)Background. A "seek-test-treat" intervention (ARISTOTLE) was implemented in response to an outbreak of human immunodeficiency virus (HIV) infection among persons who inject drugs (PWID) in Athens. We assess trends in HIV ...
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Socially-Integrated Transdisciplinary HIV Prevention
Friedman, Samuel R.; Jr, M. J. Downing; Smyrnov, P.; Nikolopoulos, Georgios K.; Schneider, J. A.; Livak, B.; Magiorkinis, Gkikas; Slobodianyk, L.; Vasylyeva, T. I.; Paraskeva, D.; Psichogiou, M.; Sypsa, V.; Malliori-Minerva, Melpomeni; Hatzakis, A. (2014)Current ideas about HIV prevention include a mixture of primarily biomedical interventions, socio-mechanical interventions such as sterile syringe and condom distribution, and behavioral interventions. This article presents ...