• 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  

      Asynchronous gossip 

      Georgiou, Chryssis; Gilbert, S.; Guerraoui, R.; Kowalski, D. R. (2013)
      We study the complexity of gossip in an asynchronous, message-passing fault-prone distributed system. We show that an adaptive adversary can significantly hamper the spreading of a rumor, while an oblivious adversary cannot. ...
    • 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  

      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  

      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-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  

      Influenza vaccination: Cassandra's prophecy 

      Nikolopoulos, Georgios K.; Tsiodras, Sotirios; Bonovas, Stefanos (2012)
    • Article  

      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. ...
    • Conference Object  

      On the complexity of asynchronous gossip 

      Georgiou, Chryssis; Gilbert, S.; Guerraoui, R.; Kowalski, D. R. (2008)
      In this paper, we study the complexity of gossip in an asynchronous, message-passing fault-prone distributed system. In short, we show that an adaptive adversary can significantly hamper the spreading of a rumor, while an ...
    • Article  

      Post-cataract surgery endophthalmitis outbreak caused by multidrug-resistant Pseudomonas aeruginosa 

      Maltezou, Helena C.; Pappa, O.; Nikolopoulos, Georgios K.; Ftika, L.; Maragos, Antonios; Kaitsa, H.; Protonotariou, E.; Diza, Evdoxia; Georgiadis, N.; Vatopoulos, A.; Nikolaidis, Pavlos (2012)
      In June 2010, a severe outbreak of 13 cases of postcataract surgery endophthalmitis caused by multidrug-resistant Pseudomonas aeruginosa occurred. Pulse-field gel electrophoresis in eye isolates found 95% genetic similarity; ...