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Auflistung nach Autor "Kollan, Christian"
Anzeige der Publikationen 1-20 von 42
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2011-09-09ZeitschriftenartikelCalculation of Direct Antiretroviral Treatment Costs and Potential Cost Savings by Using Generics in the German HIV ClinSurv Cohort. Stoll, Matthias; Kollan, Christian; Bergmann, Frank; Bogner, Johannes; Faetkenheuer, Gerd; Fritzsche, Carlos; Hoeper, Kirsten; Horst, Heinz-August; Lunzen, Jan van; Plettenberg, Andreas; Reuter, Stefan; Rockstroh, Jürgen; Stellbrink, Hans-Jürgen; Hamouda, Osamah; Bartmeyer, BarbaraBackground/Aim of the Study: The study aimed to determine the cost impacts of antiretroviral drugs by analysing a longterm follow-up of direct costs for combined antiretroviral therapy, cART,-regimens in the nationwide ...
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2016-12-07ZeitschriftenartikelCD4-cell counts and presence of AIDS in HIV-positive patients entering specialized care—a comparison of migrant groups in the German ClinSurv HIV Cohort Study, 1999–2013 Zeitlmann, Nadine; Gunsenheimer-Bartmeyer, Barbara; Santos-Hövener, Claudia; Kollan, Christian; Heiden, Matthias an derBackground: Although early presentation to HIV-care is essential to ensure timely initiation of antiretroviral therapy, recent studies have shown that especially migrants present to HIV-care at a later stage of ...
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2010-12-08ZeitschriftenartikelClinical Outcome of HIV-Infected Patients with Discordant Virological and Immunological Response to Antiretroviral Therapy Zoufaly, Alexander; Heiden, Matthias an der; Kollan, Christian; Bogner, Johannes; Fätkenheuer, G.; Wasmuth, J. C.; Stoll, Matthias; Hamouda, Osamah; Lunzen, Jan vanBackground: A subgroup of human immunodeficiency virus type 1 (HIV-1)–infected patients with severe immunodeficiency show persistently low CD4+ cell counts despite sustained viral suppression. It is unclear whether this ...
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2020-10-17ZeitschriftenartikelCompleteness of tuberculosis case notifications in Germany in 2013–2017: first results of an inventory study Domaszewska, Teresa; Karo, Basel; Preuss, Ute; Kollan, Christian; Reuss, Annicka; Blank, Hans-Peter; Brodhun, Bonita; Hauer, Barbara; Altmann, Doris; Fiebig, Lena; Haas, Walter; Perumal, NitaBackground Evaluating the completeness of tuberculosis (TB) notification data is important for monitoring of TB surveillance systems. We conducted an inventory study to calculate TB underreporting in Germany in ...
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2019-02-14ZeitschriftenartikelCost-effectiveness and budget effect of pre-exposure prophylaxis for HIV-1 prevention in Germany from 2018 to 2058 van de Vijver, David A M C; Richter, Ann-Kathrin; Boucher, Charles A B; Gunsenheimer-Bartmeyer, Barbara; Kollan, Christian; Nichols, Brooke E; Spinner, Christoph D; Wasem, Jürgen; Schewe, Knud; Neumann, AnjaBackground Pre-exposure prophylaxis (PrEP) is a highly effective HIV prevention strategy for men-who-have-sex-with-men (MSM). The high cost of PrEP has until recently been a primary barrier to its use. In 2017, generic ...
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2009-07-01ZeitschriftenartikelCumulative HIV Viremia during Highly Active Antiretroviral Therapy Is a Strong Predictorof AIDS‐Related Lymphoma Zoufaly, Alexander; Stellbrink, Hans-Jürgen; Heiden, Matthias an der; Kollan, Christian; Hoffmann, Christian; Lunzen, Jan van; Hamouda, OsamahBackground.AIDS‐related lymphoma contributes to significant morbidity and mortality among human immunodeficiency virus (HIV)–infected patients receiving highly active antiretroviral therapy (HAART). We assessed the predictive ...
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2014-08-22ZeitschriftenartikelEstimating Trends in the Proportion of Transmitted and Acquired HIV Drug Resistance in a Long Term Observational Cohort in Germany Schmidt, Daniel; Kollan, Christian; Fätkenheuer, Gerd; Schülter, Eugen; Stellbrink, Hans-Jürgen; Noah, Christian; Jensen, Björn-Erik Ole; Stoll, Matthias; Bogner, Johannes R.; Eberle, Josef; Meixenberger, Karolin; Kücherer, Claudia; Hamouda, Osamah; Bartmeyer, BarbaraObjective: We assessed trends in the proportion of transmitted (TDR) and acquired (ADR) HIV drug resistance and associated mutations between 2001 and 2011 in the German ClinSurv-HIV Drug Resistance Study. Method: ...
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2021-01-22ZeitschriftenartikelEverything counts - a method to determine viral suppression among people living with HIV using longitudinal data for the HIV care continuum - results of two large, German, multi-center real-life cohort studies over 20 years (1999–2018) Schmidt, Daniel; Kollan, Christian; Stoll, Matthias; Hamouda, Osamah; Bremer, Viviane; Kurth, Tobias; Bartmeyer, BarbaraBackground The aim of this study was to develop a standardized method to reconstruct persons’ individual viral load (VL) courses to determine viral suppression and duration of viremia for the HIV care continuum in Germany ...
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2015-03-17ZeitschriftenartikelFrom pills to patients: an evaluation of data sources to determine the number of people living with HIV who are receiving antiretroviral therapy in Germany Schmidt, Daniel; Kollan, Christian; Stoll, Matthias; Stellbrink, Hans-Jürgen; Plettenberg, Andreas; Fätkenheuer, Gerd; Bergmann, Frank; Bogner, Johannes R.; Lunzen, Jan van; Rockstroh, Jürgen; Esser, Stefan; Jensen, Björn-Erik Ole; Horst, Heinz-August; Fritzsche, Carlos; Kühne, Andrea; Heiden, Matthias an der; Hamouda, Osamah; Bartmeyer, BarbaraBackground: This study aimed to determine the number of people living with HIV receiving antiretroviral therapy (ART) between 2006 and 2013 in Germany by using the available numbers of antiretroviral drug prescriptions ...
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2023-08-31ZeitschriftenartikelGemeldete HIV-Erstdiagnosen 2021 – 2022 Marcus, Ulrich; Schmidt, Daniel; Friebe, Martin; Kollan, Christian; Gunsenheimer- Bartmeyer, Barbara; Bremer, VivianeGemäß § 7 Abs. 3 Infektionsschutzgesetz (IfSG) ist der direkte oder indirekte Nachweis einer Infektion mit dem Humanen Immundefizienz-Virus (HIV) nichtnamentlich unmittelbar an das Robert Koch-Institut (RKI) zu melden. Dem ...
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2018-03-29ZeitschriftenartikelGroße Unterschiede bei TB-, HIV-, HCV-Behandlung und Opioid- Substitutions-Therapie unter Gefangenen in Deutschland Schmidt, Daniel; Müller, Jana; Kollan, Christian; Lehmann, Marc; Bremer, Viviane; Zimmermann, RuthStudien zeigen, dass bestimmte durch Tröpfchen, Blut und Sexualkontakte übertragene Infektionen und andere Krankheiten bei Inhaftierten stärker verbreitet sind als in der Allgemeinbevölkerung. Im Epidemiologischen Bulletin ...
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2018-07-19ZeitschriftenartikelHepatitis C im Jahr 2017 Zur Situation bei wichtigen Infektionskrankheiten in DeutschlandZimmermann, Ruth; Meurs, Lynn; Schmidt, Daniel; Kollan, Christian; Dudareva, Sandra; Bremer, VivianeAm 28. Juli 2018 findet der diesjährige Welt-Hepatitis-Tag unter dem Motto „Hepatitis: Findet die fehlenden Millionen!“ statt. Aus diesem Anlass widmen sich zwei Ausgaben des Epidemiologischen Bulletins der Hepatitis-Situation, ...
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2017-10-25ZeitschriftenartikelHigh variability of TB, HIV, hepatitis C treatment and opioid substitution therapy among prisoners in Germany Müller, Jana; Schmidt, Daniel; Kollan, Christian; Lehmann, Marc; Bremer, Viviane; Zimmermann, RuthBackground: In Germany, medical care of prisoners is completely separated from extramural health care. The extent and quality of medical care among prisoners in Germany are therefore largely unknown. We performed a ...
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2017-09-28ZeitschriftenartikelHIV-Jahresbericht 2016 Bremer, Viviane; Gunsenheimer-Bartmeyer, Barbara; Marcus, Ulrich; Voß, Lieselotte; Kollan, Christian; Schönerstedt-Zastrau, KerstinIm Epidemiologischen Bulletin 39/2017 ist eine Auswertung der HIV-Neudiagnosen in Deutschland im Jahr 2016 erschienen. Bei der Bewertung der HIV-Meldezahlen ist zu berücksichtigen, dass die Zahl der HIV-Neudiagnosen nicht ...
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2019-11-14ZeitschriftenartikelHIV-Jahresbericht 2017/2018 Marcus, Ulrich; Gunsenheimer-Bartmeyer, Barbara; Bremer, Viviane; Kollan, ChristianZur Beschreibung der HIV/AIDS-Epidemie werden die HIV-Meldungen gemäß IfSG, das AIDS-Fallregister mit AIDS- und HIV-Todesfallberichten an das RKI, die Todesursachen-Statistik der statistischen Landesämter sowie Verkaufsdaten ...
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2021-08-05ZeitschriftenartikelHIV-Jahresbericht 2019–2020 Marcus, Ulrich; Kollan, Christian; Gunsenheimer-Bartmeyer, Barbara; Bremer, VivianeGemäß § 7 Abs. 3 Infektionsschutzgesetz (IfSG) ist der direkte oder indirekte Nachweis einer Infektion mit dem Humanen Immundefizienz-Virus (HIV) nichtnamentlich unmittelbar an das Robert Koch-Institut (RKI) zu melden. Dem ...
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2012-11-07ZeitschriftenartikelHIV-Prevalence in Tuberculosis Patients in Germany, 2002–2009: An Estimation Based on HIV and Tuberculosis Surveillance Data Fiebig, Lena; Kollan, Christian; Hauer, Barbara; Gunsenheimer-Bartmeyer, Barbara; Heiden, Matthias an der; Haas, WalterTuberculosis (TB) and HIV comorbidity is a major challenge in TB prevention and control but difficult to assess in Germany as in other countries, where data confidentiality precludes notifying the HIV status of TB patients. ...
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2019-12-05ZeitschriftenartikelHIV-Studien und HIV-Projekte am Robert Koch-Institut Koppe, Uwe; Hanke, Kirsten; Fiebig, Uwe; Schmidt, Daniel; Meixenberger, Karolin; Pantke, Annemarie; Gunsenheimer-Bartmeyer, Barbara; Kollan, Christian; Kühne, Andrea; Marcus, Ulrich; Bannert, Norbert; Bremer, VivianeNeben der gesetzlich geregelten Surveillance von HIV-Neudiagnosen in Deutschland erfolgt am RKI auch die Durchführung verschiedener Studienprojekte, die im Epidemiologischen Bulletin 49/2019 vorgestellt werden. Das Rückgrat ...
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2017-07-25ZeitschriftenartikelImmunological recovery in tuberculosis/HIV co-infected patients on antiretroviral therapy: implication for tuberculosis preventive therapy Karo, Basel; Krause, Gérard; Castell, Stefanie; Kollan, Christian; Hamouda, Osamah; Haas, WalterBackground: Understanding the immune response to combination antiretroviral therapy (cART) is essential for a clear approach to tuberculosis (TB) preventive therapy. We investigated the immunological recovery in ...
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2009-06-18ZeitschriftenartikelImpaired CD4-cell immune reconstitution upon HIV therapy in patients with toxoplasmic encephalitis compared to patients with pneumocystis pneumonia as AIDS indicating disease Kastenbauer, U.; Wolf, Eckhard; Kollan, Christian; Hamouda, Osamah; Bogner, JohannesObjectives: There is only little data on immune reconstitution in antiretroviral naïve AIDS-patients with toxoplasmosis. The observation of several cases with reduced increase of CD4-cells upon start of antiretroviral ...