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Factors associated with the informal use of HIV pre-exposure prophylaxis in Germany: a cross-sectional study.

Koppe U, Marcus U, Albrecht S, Jansen K, Jessen H, Gunsenheimer-Bartmeyer B, Bremer V.

J Int AIDS Soc. 2019 Oct;22(10):e25395. doi: 10.1002/jia2.25395.


Links between transactional sex and HIV/STI-risk and substance use among a large sample of European men who have sex with men.

Berg RC, Weatherburn P, Marcus U, Schmidt AJ.

BMC Infect Dis. 2019 Aug 5;19(1):686. doi: 10.1186/s12879-019-4326-3.


Factors related to condomless anal intercourse between men who have sex with men: results from a European bio-behavioural survey.

Sherriff NS, Jones AM, Mirandola M, Gios L, Marcus U, Llewellyn C, Rosinska M, Folch C, Dias S, Toskin I, Alexiev I, Kühlmann-Berenzon S; Sialon II Network.

J Public Health (Oxf). 2019 May 15. pii: fdz052. doi: 10.1093/pubmed/fdz052. [Epub ahead of print]


Population size and self-reported characteristics and sexual preferences of men-who-have-sex-with-men (MSM) in Germany based on social network data.

Scholz SM, Damm O, Elkenkamp S, Marcus U, Greiner W, Schmidt AJ.

PLoS One. 2019 Feb 14;14(2):e0212175. doi: 10.1371/journal.pone.0212175. eCollection 2019.


History of detention and the risk of hepatitis C among people who inject drugs in Germany.

Gassowski M, Nielsen S, Bannert N, Bock CT, Bremer V, Ross RS, Wenz B, Marcus U, Zimmermann R; DRUCK Study Group.

Int J Infect Dis. 2019 Apr;81:100-106. doi: 10.1016/j.ijid.2019.01.015. Epub 2019 Jan 15.


Quantifying unmet prevention needs among MSM in Europe through a multi-site bio-behavioural survey.

Mirandola M, Gios L, Sherriff N, Marcus U, Toskin I, Rosinska M, Schink S, Kühlmann-Berenzon S, Suligoi B, Folch C, Nöstlinger C, Dias S, Stanekova D, Klavs I, Caplinskas S, Rafila A, Marin C, Alexiev I, Zohrabyan L, Noori T, Menel-Lemos C, On Behalf Of The Sialon Ii Network.

Euro Surveill. 2018 Dec;23(49). doi: 10.2807/1560-7917.ES.2018.23.49.1800097.


Trends in human immunodeficiency virus diagnoses among men who have sex with men in North America, Western Europe, and Australia, 2000-2014.

Chapin-Bardales J, Schmidt AJ, Guy RJ, Kaldor JM, McGregor S, Sasse A, Archibald C, Rank C, Casabona Barbarà J, Folch C, Vives N, Cowan SA, Cazein F, Velter A, An der Heiden M, Gunsenheimer-Bartmeyer B, Marcus U, Op de Coul ELM, van Sighem A, Aldir I, Cortes Martins H, Berglund T, Velicko I, Gebhardt M, Delpech V, Hughes G, Nardone A, Hall HI, Johnson AS, Sullivan PS.

Ann Epidemiol. 2018 Dec;28(12):874-880. doi: 10.1016/j.annepidem.2018.09.006. Epub 2018 Oct 9.


Behavioural and demographic correlates of undiagnosed HIV infection in a MSM sample recruited in 13 European cities.

Marcus U, Nöstlinger C, Rosińska M, Sherriff N, Gios L, Dias SF, Gama AF, Toskin I, Alexiev I, Naseva E, Schink SB, Mirandola M; Sialon II Network.

BMC Infect Dis. 2018 Aug 6;18(1):368. doi: 10.1186/s12879-018-3249-8.


Risk behaviours and viral infections among drug injecting migrants from the former Soviet Union in Germany: Results from the DRUCK-study.

Derks L, Gassowski M, Nielsen S, An der Heiden M, Bannert N, Bock CT, Bremer V, Kücherer C, Ross S, Wenz B, Marcus U, Zimmermann R; DRUCK-study group.

Int J Drug Policy. 2018 Sep;59:54-62. doi: 10.1016/j.drugpo.2018.06.011. Epub 2018 Jul 11.


Monitoring the HIV continuum of care in key populations across Europe and Central Asia.

Brown AE, Attawell K, Hales D, Rice BD, Pharris A, Supervie V, Van Beckhoven D, Delpech VC, An der Heiden M, Marcus U, Maly M, Noori T.

HIV Med. 2018 May 8. doi: 10.1111/hiv.12603. [Epub ahead of print]


Prevalence of drug use during sex amongst MSM in Europe: Results from a multi-site bio-behavioural survey.

Rosińska M, Gios L, Nöstlinger C, Vanden Berghe W, Marcus U, Schink S, Sherriff N, Jones AM, Folch C, Dias S, Velicko I, Mirandola M; Sialon II Network.

Int J Drug Policy. 2018 May;55:231-241. doi: 10.1016/j.drugpo.2018.01.002. Epub 2018 May 7.


HIV serostatus knowledge and serostatus disclosure with the most recent anal intercourse partner in a European MSM sample recruited in 13 cities: results from the Sialon-II study.

Marcus U, Schink SB, Sherriff N, Jones AM, Gios L, Folch C, Berglund T, Nöstlinger C, Niedźwiedzka-Stadnik M, Dias SF, Gama AF, Naseva E, Alexiev I, Staneková D, Toskin I, Pitigoi D, Rafila A, Klavs I, Mirandola M; Sialon II Network.

BMC Infect Dis. 2017 Nov 25;17(1):730. doi: 10.1186/s12879-017-2814-x.


A large proportion of people who inject drugs are susceptible to hepatitis B: Results from a bio-behavioural study in eight German cities.

Haussig JM, Nielsen S, Gassowski M, Bremer V, Marcus U, Wenz B, Bannert N, Bock CT, Zimmermann R; DRUCK study group.

Int J Infect Dis. 2018 Jan;66:5-13. doi: 10.1016/j.ijid.2017.10.008. Epub 2017 Oct 31.


No significant HTLV seroprevalence in German people who inject drugs.

Hohn O, Norley S, Kücherer C, Bazarbachi A, El Hajj H, Marcus U, Zimmermann R, Bannert N.

PLoS One. 2017 Aug 22;12(8):e0183496. doi: 10.1371/journal.pone.0183496. eCollection 2017.


Anti-LGBT and Anti-immigrant Structural Stigma: An Intersectional Analysis of Sexual Minority Men's HIV Risk When Migrating to or Within Europe.

Pachankis JE, Hatzenbuehler ML, Berg RC, Fernández-Dávila P, Mirandola M, Marcus U, Weatherburn P, Schmidt AJ.

J Acquir Immune Defic Syndr. 2017 Dec 1;76(4):356-366. doi: 10.1097/QAI.0000000000001519.


[Data on the sexual health of providers and clients of sexual services for men who have sex with men in Germany].

Kramer S, Schmidt AJ, Marcus U.

Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2017 Sep;60(9):958-970. doi: 10.1007/s00103-017-2589-7. German.


Increased incidence of syphilis in men who have sex with men and risk management strategies, Germany, 2015.

Jansen K, Schmidt AJ, Drewes J, Bremer V, Marcus U.

Euro Surveill. 2016 Oct 27;21(43). doi: 10.2807/1560-7917.ES.2016.21.43.30382.


Illicit drug use among gay and bisexual men in 44 cities: Findings from the European MSM Internet Survey (EMIS).

Schmidt AJ, Bourne A, Weatherburn P, Reid D, Marcus U, Hickson F; EMIS Network.

Int J Drug Policy. 2016 Dec;38:4-12. doi: 10.1016/j.drugpo.2016.09.007. Epub 2016 Oct 25.


The Geography of Sexual Orientation: Structural Stigma and Sexual Attraction, Behavior, and Identity Among Men Who Have Sex with Men Across 38 European Countries.

Pachankis JE, Hatzenbuehler ML, Mirandola M, Weatherburn P, Berg RC, Marcus U, Schmidt AJ.

Arch Sex Behav. 2017 Jul;46(5):1491-1502. doi: 10.1007/s10508-016-0819-y. Epub 2016 Sep 12.


High variability of HIV and HCV seroprevalence and risk behaviours among people who inject drugs: results from a cross-sectional study using respondent-driven sampling in eight German cities (2011-14).

Wenz B, Nielsen S, Gassowski M, Santos-Hövener C, Cai W, Ross RS, Bock CT, Ratsch BA, Kücherer C, Bannert N, Bremer V, Hamouda O, Marcus U, Zimmermann R; DRUCK Study group.

BMC Public Health. 2016 Sep 5;16:927. doi: 10.1186/s12889-016-3545-4.


Concordance between self-reported and measured HIV and hepatitis C virus infection status among people who inject drugs in Germany.

Nielsen S, Gassowski M, Wenz B, Bannert N, Bock CT, Kücherer C, Ross RS, Bremer V, Marcus U, Zimmermann R; DRUCK study group.

Hepatol Med Policy. 2016 Sep 1;1:8. doi: 10.1186/s41124-016-0016-6. eCollection 2016.


Risk of Invasive Meningococcal Disease in Men Who Have Sex with Men: Lessons Learned from an Outbreak in Germany, 2012-2013.

Hellenbrand W, Claus H, Schink S, Marcus U, Wichmann O, Vogel U.

PLoS One. 2016 Aug 3;11(8):e0160126. doi: 10.1371/journal.pone.0160126. eCollection 2016.


Bio-behavioural HIV and STI surveillance among men who have sex with men in Europe: the Sialon II protocols.

Gios L, Mirandola M, Toskin I, Marcus U, Dudareva-Vizule S, Sherriff N, Breveglieri M, Furegato M, Folch C, Ferrer L, Montoliu A, Nöstlinger C, Vanden Berghe W, Kühlmann-Berenzon S, Velicko I, Dias S, Suligoi B, Regine V, Stanekova D, Rosińska M, Caplinskas S, Klavs I, Alexiev I, Rafila A.

BMC Public Health. 2016 Mar 2;16:212. doi: 10.1186/s12889-016-2783-9.


Evaluation of a temporary vaccination recommendation in response to an outbreak of invasive meningococcal serogroup C disease in men who have sex with men in Berlin, 2013-2014.

Koch J, Hellenbrand W, Schink S, Wichmann O, Carganico A, Drewes J, Kruspe M, Suckau M, Claus H, Marcus U.

Euro Surveill. 2016;21(5):12-22. doi: 10.2807/1560-7917.ES.2016.21.5.30122.


Factors associated with unprotected anal sex with multiple non-steady partners in the past 12 months: results from the European Men-Who-Have-Sex-With-Men Internet Survey (EMIS 2010).

Kramer SC, Schmidt AJ, Berg RC, Furegato M, Hospers H, Folch C, Marcus U; EMIS Network.

BMC Public Health. 2016 Jan 19;16:47. doi: 10.1186/s12889-016-2691-z.


The impact of meeting locations for men having sex with men on the risk for bacterial sexually transmitted infections: analyses from a cross-sectional online survey.

Marcus U, an der Heiden M, Gassowski M, Kruspe M, Drewes J.

BMJ Open. 2015 Nov 4;5(11):e009107. doi: 10.1136/bmjopen-2015-009107.


Determinants of HIV, viral hepatitis and STI prevention needs among African migrants in Germany; a cross-sectional survey on knowledge, attitudes, behaviors and practices.

Santos-Hövener C, Marcus U, Koschollek C, Oudini H, Wiebe M, Ouedraogo OI, Thorlie A, Bremer V, Hamouda O, Dierks ML, An der Heiden M, Krause G.

BMC Public Health. 2015 Aug 6;15:753. doi: 10.1186/s12889-015-2098-2.


Recency and frequency of HIV testing among men who have sex with men in Germany and socio-demographic factors associated with testing behaviour.

Marcus U, Gassowski M, Kruspe M, Drewes J.

BMC Public Health. 2015 Jul 30;15:727. doi: 10.1186/s12889-015-1945-5.


Hidden from health: structural stigma, sexual orientation concealment, and HIV across 38 countries in the European MSM Internet Survey.

Pachankis JE, Hatzenbuehler ML, Hickson F, Weatherburn P, Berg RC, Marcus U, Schmidt AJ.

AIDS. 2015 Jun 19;29(10):1239-46. doi: 10.1097/QAD.0000000000000724.


Antiretroviral therapy and reasons for not taking it among men having sex with men (MSM)--results from the European MSM Internet Survey (EMIS).

Marcus U, Hickson F, Weatherburn P, Furegato M, Breveglieri M, Berg RC, Schmidt AJ; EMIS network.

PLoS One. 2015 Mar 20;10(3):e0121047. doi: 10.1371/journal.pone.0121047. eCollection 2015.


Risk factors for HIV and STI diagnosis in a community-based HIV/STI testing and counselling site for men having sex with men (MSM) in a large German city in 2011-2012.

Marcus U, Ort J, Grenz M, Eckstein K, Wirtz K, Wille A.

BMC Infect Dis. 2015 Jan 13;15:14. doi: 10.1186/s12879-014-0738-2.


A multicentre sero-behavioural survey for hepatitis B and C, HIV and HTLV among people who inject drugs in Germany using respondent driven sampling.

Zimmermann R, Marcus U, Schäffer D, Leicht A, Wenz B, Nielsen S, Santos-Hövener C, Ross RS, Stambouli O, Ratsch BA, Bannert N, Bock CT, Kücherer C, Hamouda O.

BMC Public Health. 2014 Aug 14;14:845. doi: 10.1186/1471-2458-14-845.


Conversation about Serostatus decreases risk of acquiring HIV: results from a case control study comparing MSM with recent HIV infection and HIV negative controls.

Santos-Hövener C, Zimmermann R, Kücherer C, Bätzing-Feigenbaum J, Wildner S, Hamouda O, Marcus U.

BMC Public Health. 2014 May 14;14:453. doi: 10.1186/1471-2458-14-453.


[Deficits in STI diagnosis for men who have sex with men (MSM) in German-speaking cities: results of the European MSM Internet Survey (EMIS)].

Schmidt AJ, Marcus U.

Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2013 Dec;56(12):1609-18. doi: 10.1007/s00103-013-1855-6. German. Erratum in: Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2014 Mar;57(3):388-9.


[Epidemiological developments of selected sexually transmitted infections in Germany].

Hamouda O, Bremer V, Marcus U, Bartmeyer B.

Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2013 Dec;56(12):1600-8. doi: 10.1007/s00103-013-1866-3. German.


Age biases in a large HIV and sexual behaviour-related internet survey among MSM.

Marcus U, Hickson F, Weatherburn P, Schmidt AJ; EMIS network.

BMC Public Health. 2013 Sep 10;13:826. doi: 10.1186/1471-2458-13-826.


[PrEP approved in the USA: facts and discussion - permanent chemoprophylaxis for healthy people].

Marcus U.

MMW Fortschr Med. 2013 Jun 13;155 Suppl 1:42-4. German. No abstract available.


Prevalence of pharyngeal and rectal Chlamydia trachomatis and Neisseria gonorrhoeae infections among men who have sex with men in Germany.

Dudareva-Vizule S, Haar K, Sailer A, Wisplinghoff H, Wisplinghoff F, Marcus U; PARIS study group.

Sex Transm Infect. 2014 Feb;90(1):46-51. doi: 10.1136/sextrans-2012-050929. Epub 2013 Aug 6.


A cluster of invasive meningococcal disease in young men who have sex with men in Berlin, October 2012 to May 2013.

Marcus U, Vogel U, Schubert A, Claus H, Baetzing-Feigenbaum J, Hellenbrand W, Wichmann O.

Euro Surveill. 2013 Jul 11;18(28). pii: 20523.


Comparison of the performance of STI screening services for gay and bisexual men across 40 European cities: results from the European MSM Internet Survey.

Schmidt AJ, Hickson F, Weatherburn P, Marcus U; EMIS Network.

Sex Transm Infect. 2013 Nov;89(7):575-82. doi: 10.1136/sextrans-2012-050973. Epub 2013 Jun 6.


Lymphogranuloma venereum in men screened for pharyngeal and rectal infection, Germany.

Haar K, Dudareva-Vizule S, Wisplinghoff H, Wisplinghoff F, Sailer A, Jansen K, Henrich B, Marcus U.

Emerg Infect Dis. 2013 Mar;19(3):488-92. doi: 10.3201/eid1903.121028.


Prevalence of HIV among MSM in Europe: comparison of self-reported diagnoses from a large scale internet survey and existing national estimates.

Marcus U, Hickson F, Weatherburn P, Schmidt AJ; EMIS Network.

BMC Public Health. 2012 Nov 14;12:978. doi: 10.1186/1471-2458-12-978.


Syphilis on the rise again in Germany--results from surveillance data for 2011.

Bremer V, Marcus U, Hamouda O.

Euro Surveill. 2012 Jul 19;17(29). pii: 20222.


Late presentation for HIV diagnosis and care in Germany.

Zoufaly A, an der Heiden M, Marcus U, Hoffmann C, Stellbrink H, Voss L, van Lunzen J, Hamouda O; ClinSurv Study Group.

HIV Med. 2012 Mar;13(3):172-81. doi: 10.1111/j.1468-1293.2011.00958.x. Epub 2011 Nov 7.


[HIV postexposure prophylaxis after suspicious (hetero-)sexual contact].

Marcus U.

MMW Fortschr Med. 2011 May 5;153(18):35-7. Review. German. No abstract available.


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