• Article  

      Antiretrovirals for HIV exposure prophylaxis 

      Nikolopoulos, Georgios K.; Tsiodras, Sotirios; Bonovas, Stefanos; Hatzakis, A. (2012)
      Infection with Human Immunodeficiency Virus (HIV) remains a global public health problem. Although the epidemic has not been completely controlled, there was considerable progress in HIV prevention and treatment during the ...
    • Article  

      Assessing the secular trends in the transmission of HIV in Greece 

      Tsantes, Argirio E.; Nikolopoulos, Georgios K.; Masgala, Aikaterini; Paraskeva, D. (2005)
      Objective: To evaluate the current trends in HIV transmission in Greece. Methods: A retrospective study of HIV infected individuals reported to the Hellenic Center for Infectious Diseases Control (HCIDC) was conducted. ...
    • Article  

      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 ...
    • Article  

      Condom effectiveness in reducing heterosexual HIV transmission: a systematic review and meta-analysis of studies on HIV serodiscordant couples 

      Giannou, Foteini K.; Tsiara, Chrissa G.; Nikolopoulos, Georgios K.; Talias, M.; Benetou, Vasiliki; Kantzanou, Maria; Bonovas, Stefanos; Hatzakis, A. (2016)
      Objective: This systematic review and meta-analysis aimed to reassess the effectiveness of condoms in reducing heterosexual transmission of HIV. Methods: Medline, Scopus, and the ISI Web of Science databases were searched ...
    • Article  

      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 ...
    • Article  

      Developing Measures of Pathways that May Link Macro Social/Structural Changes with HIV Epidemiology 

      Pouget, E. R.; Sandoval, M.; Nikolopoulos, Georgios K.; Mateu-Gelabert, Pedro; Rossi, D.; Smyrnov, P.; Jones, Yolanda; Friedman, Samuel R. (2016)
      Macro-social/structural events (“big events”) such as wars, disasters, and large-scale changes in policies can affect HIV transmission by making risk behaviors more or less likely or by changing risk contexts. The purpose ...
    • Article  

      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. ...
    • Article  

      Effect of hepatitis C virus on immunological and virological responses in HIV-infected patients initiating highly active antiretroviral therapy: A meta-analysis 

      Tsiara, Chrissa G.; Nikolopoulos, Georgios K.; Dimou, Niki L.; Bagos, Pantelis G.; Saroglou, G.; Velonakis, E.; Hatzakis, A. (2013)
      Co-infection of human immunodeficiency virus (HIV) with hepatitis C virus (HCV) is rather common. In the era of highly active antiretroviral therapy (HAART), viral hepatitis could result in adverse outcomes in HIV+ patients. ...
    • Article  

      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 ...
    • Article  

      Estimating HIV incidence and number of undiagnosed individuals living with HIV in the European union/ European economic area, 2015 

      Pharris, Anastasia; Quinten, C.; Noori, T.; Amato-Gauci, A. J.; Sighem, A. van; Schmid, D.; Rueckerl, I.; Zangerle, R.; Sasse, A.; Beckhoven, D. van; Denauw, F.; Varleva, T.; Georgieva, V.; Blazic, T. N.; Pavlic, J.; Begovac, J.; Koliou, M.; Hadjihannas, L.; Demetriou, A.; Maly, M.; Šikolová, V.; Cowan, Susan; Fouchard, J.; Rüütel, K.; Pääsukene, A. L.; Liitsola, K.; Salminen, M.; Brummer-Korvenkontio, H.; Cazein, F.; Pillonel, J.; Lot, F.; Comboroure, J.-C.; Gunsenheimer-Bartmeyer, Barbara; Heiden, M. A. Der; Kupfer, G.; Marcus, U.; Nikolopoulos, Georgios K.; Paraskeva, D.; Konte, Vasileia; Dudas, M.; Szalay, K.; Briem, H.; Sigmundsdottir, G.; Igoe, D.; O’Donnell, K.; Hurley, C.; Lyons, F.; Suligoi, B.; Caraglia, A.; Konova, S.; Erne, S.; Caplinskiene, I.; Fischer, A.; Hoffmann, P.; Melillo, J. M.; Melillo, T.; Coul, Eline Op de; David, S.; Blystad, H.; Myrberg, A. J.; Rosinska, M.; Wawer, I.; Mansinho, K.; Martins, H. C.; Melillo, T.; Mardarescu, Mariana; Truska, P.; Mikas, J.; Klavs, I.; Diaz, Alejandro; Nuñez, O.; Castillo, O.; Avdicova, Maria; Sonnerborg, A.; Kirwan, P.; Chau, C.; Okala, S.; Brown, A.; Delpech, Valerie (2016)
      Since 2011, human immunodeficiency virus (HIV) incidence appears unchanged in the European Union/ European Economic Area with between 29,000 and 33,000 new cases reported annually up to 2015. Despite evidence that HIV ...
    • Article  

      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 ...
    • Article  

      HBV-DNA levels predict overall mortality in HIV/HBV coinfected individuals 

      Nikolopoulos, Georgios K.; Paraskeva, D.; Psichogiou, M.; Hatzakis, A. (2016)
      The coinfection of Hepatitis B virus (HBV) and human immunodeficiency virus (HIV) has been associated with increased death rates. However, the relevant research has mostly relied on serologic HBV testing [HBV surface antigen ...
    • Article  

      High-burden epidemics in Greece in the era of economic crisis. Early signs of a public health tragedy 

      Bonovas, Stefanos; Nikolopoulos, Georgios K. (2012)
      Background. Economic hardships have unleashed epidemics of infectious diseases in many countries in the past. In the era of the current financial crisis in Greece, it is interesting to assess the preliminary evidence ...
    • Article  

      HIV surveillance and injecting drug users in Greece 

      Pharris, Anastasia; Amato, Andrew; Giesecke, Johan; Nikolopoulos, Georgios K.; Tsiodras, Sotirios; Botsi, Chryssoula; Malliori-Minerva, Melpomeni; Kremastinou, Jenny (2014)
      A letter to the editor is presented in response to the article "HIV infections and injecting drug users in Greece," by Evangelos C. Alexopoulous in the September 25, 2013 issue.
    • Article  

      HIV surveillance and injecting drug users in Greece (II) 

      Nikolopoulos, Georgios K.; Tsiodras, Sotirios; Botsi, Chryssoula; Malliori-Minerva, Melpomeni; Kremastinou, Jenny (2014)
    • Article  

      HIV-1 outbreak among injecting drug users in Greece, 2011: A preliminary report 

      Paraskeva, D.; Nikolopoulos, Georgios K.; Tsiara, Chrissa G.; Paraskeva, D.; Antoniadou, Anastasia; Lazanas, Marios; Gargalianos, Panagiotis; Psychogiou, M.; Malliori-Minerva, Melpomeni; Kremastinou, Jenny; Hatzakis, A. (2011)
      A significant increase (more than 10-fold) in the number of newly diagnosed HIV-1 infections among injecting drug users (IDUs) was observed in Greece during the first seven months of 2011. Molecular epidemiology results ...
    • Article  

      HIV/AIDS: Recent advances in antiretroviral agents 

      Nikolopoulos, Georgios K.; Bonovas, Stefanos; Tsantes, Argirio E.; Sitaras, N. M. (2009)
      Despite the considerable progress in antiretroviral therapy, the eradication of HIV-1 remains unfeasible. Therefore, novel agents are under investigation. The aim of this review is to summarize the conventional compounds, ...
    • Article  

      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 ...
    • Article  

      Human immunodeficiency virus in injecting drug users in Europe following a reported increase of cases in Greece and Romania, 2011 

      Pharris, Anastasia; Wiessing, L.; Sfetcu, O.; Hedrich, D.; Botescu, A.; Fotiou, Anastasios; Nikolopoulos, Georgios K.; Malliori-Minerva, Melpomeni; Salminen, M.; Suk, J. E.; Griffiths, P.; Laar, M. J. van de (2011)
      Greece and Romania reported an increased number of HIV cases among injecting drug users (IDUs) during 2011. Most European countries reported no changes in the rate of newly diagnosed cases of HIV or HIV prevalence in IDUs; ...
    • Article  

      Immediate impact of Hurricane Sandy on people who inject drugs in New York City 

      Pouget, E. R.; Sandoval, M.; Nikolopoulos, Georgios K.; Friedman, Samuel R. (2015)
      Over the eight months following Hurricane Sandy, of October 2012, we interviewed 300 people who inject drugs in New York City. During the week after the storm, 28% rescued others or volunteered with aid groups; 60% experienced ...