Asgeir Johannessen

English version of this page
Brukernavn
Besøksadresse Sykehuset i Vestfold Halfdan Wilhelmsens alle 17 3103 Tønsberg
Postadresse Postboks 1171 Blindern 0318 Oslo

Faglige interesser

  • Viral hepatitt
  • HIV/AIDS
  • Infeksjonssykdommer
  • Hepatologi
  • Afrika
  • Internasjonal helse

Bakgrunn

Emneord: Global helse, Infeksjoner, HIV, hepatitt

Publikasjoner

  • Barratt-Due, Andreas; Olsen, Inge Christoffer; Nezvalova-Henriksen, Katerina; Kåsine, Trine; Lund-Johansen, Fridtjof; Hoel, Hedda Benedicte; Holten, Aleksander Rygh; Tveita, Anders; Mathiessen, Alexander; Haugli, Mette; Eiken, Ragnhild; Kildal, Anders Benjamin; Berg, Åse; Johannessen, Asgeir; Heggelund, Lars; Dahl, Tuva Børresdatter; Skåra, Karoline Hansen; Mielnik, Pawel; Le, Lan Ai Kieu; Thoresen, Lars; Ernst, Gernot; Hoff, Dag Arne Lihaug; Skudal, Hilde Kristin; Kittang, Bård Reiakvam; Olsen, Roy Bjørkholt; Tholin, Birgitte; Ystrøm, Carl Magnus; Skei, Nina Vibeche; Tran, Trung; Dudman, Susanne Gjeruldsen; Andersen, Jan Terje; Hannula, Raisa; Dalgard, Olav; Finbråten, Ane-Kristine; Tonby, Kristian; Blomberg, Bjorn; Aballi, Saad; Fladeby, Cathrine; Steffensen, Anne; Müller, Fredrik; Dyrhol-Riise, Anne Ma; Trøseid, Marius & Aukrust, Pål (2021). Evaluation of the Effects of Remdesivir and Hydroxychloroquine on Viral Clearance in COVID-19 : A Randomized Trial. Annals of Internal Medicine.  ISSN 0003-4819. . doi: 10.7326/M21-0653 Vis sammendrag
  • Johannessen, Asgeir; Mekasha, Bitsatab; Desalegn, Hailemichael; Aberra, Hanna; Stene-Johansen, Kathrine & Berhe, Nega (2021). Mother-to-Child Transmission of Hepatitis B Virus in Ethiopia. Vaccines.  ISSN 2076-393X.  9(5) . doi: 10.3390/vaccines9050430 Vis sammendrag
  • Desalegn, Hailemichael; Chanie, Yemisrach; Shume, Paulos; Delil, Miftah; Gupta, Neil & Johannessen, Asgeir (2020). Assessment of Noninvasive Markers of Liver Fibrosis in Patients With Chronic Hepatitis C in Ethiopia. Clinical Liver Disease (CLD).  ISSN 2046-2484.  16(4), s 168- 172 . doi: 10.1002/cld.1040
  • Orlien, Stian; Ahmed, Tekabe Abdosh; Ismael, Nejib Yusuf; Berhe, Nega; Kran, Anne-Marte Bakken; Gundersen, Svein Gunnar & Johannessen, Asgeir (2020). Field performance of HBsAg rapid diagnostic tests in rural Ethiopia. Journal of Virological Methods.  ISSN 0166-0934.  289 . doi: 10.1016/j.jviromet.2020.114061 Vis sammendrag
  • Woldemedihn, Gezahegn Mekonnen; Rueegg, Corina Silvia; Desalegn, Hailemichael; Aberra, Hanna; Berhe, Nega & Johannessen, Asgeir (2020). Validity of a point-of-care viral load test for hepatitis B in a low-income setting. Journal of Virological Methods.  ISSN 0166-0934.  289 . doi: 10.1016/j.jviromet.2020.114057 Vis sammendrag
  • Aberra, Hanna; Desalegn, Hailemichael; Berhe, Nega; Mekasha, Bitsatab; Medhin, Girmay; Gundersen, Svein Gunnar & Johannessen, Asgeir (2019). The WHO guidelines for chronic hepatitis B fail to detect half of the patients in need of treatment in Ethiopia. Journal of Hepatology.  ISSN 0168-8278.  70(6), s 1065- 1071 . doi: 10.1016/j.jhep.2019.01.037
  • Al-Shudifat, Abdel-Ellah; Azab, Mohammed; Johannessen, Asgeir; Agraib, Lana & Tayyem, Reema (2019). Is the intake of antioxidants associated with risk of coronary artery disease? A Jordanian case-control study. Topics in Clinical Nutrition.  ISSN 0883-5691.  34(4), s 259- 268 . doi: 10.1097/TIN.0000000000000185 Vis sammendrag
  • Desalegn, Hailemichael; Aberra, Hanna; Berhe, Nega; Medhin, Girmay; Mekasha, Bitsatab; Gundersen, Svein Gunnar & Johannessen, Asgeir (2019). Predictors of mortality in patients under treatment for chronic hepatitis B in Ethiopia: a prospective cohort study. BMC Gastroenterology.  ISSN 1471-230X.  19(74) . doi: 10.1186/s12876-019-0993-1 Fulltekst i vitenarkiv. Vis sammendrag
  • Aberra, Hanna; Gordien, Emmanuel; Desalegn, Hailemichael; Berhe, Nega; Medhin, Girmay; Mekasha, Bitsatab; Gundersen, Svein Gunnar; Gerber, Athenaïs; Stene-Johansen, Kathrine; Øverbø, Joakim & Johannessen, Asgeir (2018). Hepatitis delta virus infection in a large cohort of chronic hepatitis B patients in Ethiopia. Liver international (Print).  ISSN 1478-3223.  38(6), s 1000- 1009 . doi: 10.1111/liv.13607
  • Al-Shudifat, Abdel-Ellah; Azab, Mohammed; Johannessen, Asgeir; Al-Shdaifat, Amjad; Agraib, Lana & Tayyem, Reema (2018). Elevated fasting blood glucose, but not obesity, is associated with coronary artery disease in patients undergoing elective coronary angiography in a referral hospital in Jordan. Annals of Saudi Medicine.  ISSN 0256-4947.  38(2), s 111- 117 . doi: 10.5144/0256-4947.2018.111
  • Azab, Mohammed; Al-Shudifat, Abdel-Ellah; Johannessen, Asgeir; Al-Shdaifat, Amjad; Agraib, Lana & Tayyem, Reema (2018). Are Risk Factors for Coronary Artery Disease Different in Persons with and Without Obesity?. Metabolic Syndrome and Related Disorders.  ISSN 1540-4196.  16(8), s 440- 445 . doi: 10.1089/met.2017.0152
  • Desalegn, Hailemichael; Aberra, Hanna; Berhe, Nega; Mekasha, Bitsatab; Stene-Johansen, Kathrine; Krarup, Henrik; Pereira, Andrè Puntervold; Gundersen, Svein Gunnar & Johannessen, Asgeir (2018). Treatment of chronic hepatitis B in sub-Saharan Africa: 1-year results of a pilot program in Ethiopia. BMC Medicine.  ISSN 1741-7015.  16 . doi: 10.1186/s12916-018-1229-x Fulltekst i vitenarkiv.
  • Orlien, Stian Magnus Staurung; Ismael, Nejib Yusuf; Ahmed, Tekabe Abdosh; Berhe, Nega; Lauritzen, Trine; Roald, Borghild; Goldin, Robert David; Stene-Johansen, Kathrine; Dyrhol-Riise, Anne Ma; Gundersen, Svein Gunnar; Morgan, Marsha Yvonne & Johannessen, Asgeir (2018). Unexplained chronic liver disease in Ethiopia: a cross-sectional study. BMC Gastroenterology.  ISSN 1471-230X.  18(1) . doi: 10.1186/s12876-018-0755-5 Fulltekst i vitenarkiv.
  • Orlien, Stian; Ahmed, Tekabe Abdosh; Ismael, Nejib Yusuf; Berhe, Nega; Lauritzen, Trine; Gundersen, Svein Gunnar & Johannessen, Asgeir (2018). High Seroprevalence of Autoantibodies Typical of Autoimmune Liver Disease in Eastern Ethiopia: Is Chewing of Khat (Catha edulis) a Triggering Factor?. Canadian journal of gastroenterology & hepatology.  ISSN 2291-2789.  s 1- 10 . doi: 10.1155/2018/4980597
  • Orlien, Stian; Sandven, Irene; Berhe, Nega; Ismael, Nejib Yusuf; Ahmed, Tekabe Abdosh; Stene-Johansen, Kathrine; Gundersen, Svein Gunnar; Morgan, Marsha Yvonne & Johannessen, Asgeir (2018). Khat chewing increases the risk for developing chronic liver disease: A hospital-based case-control study. Hepatology.  ISSN 0270-9139.  68(1), s 248- 257 . doi: 10.1002/hep.29809
  • Aberra, Hanna; Desalegn, Hailemichael; Berhe, Nega; Medhin, Girmay; Stene-Johansen, Kathrine; Gundersen, Svein Gunnar & Johannessen, Asgeir (2017). Early experiences from one of the first treatment programs for chronic hepatitis B in sub-Saharan Africa. BMC Infectious Diseases.  ISSN 1471-2334.  17(1) . doi: 10.1186/s12879-017-2549-8 Fulltekst i vitenarkiv.
  • Al-Shudifat, Abdel-Ellah; Al-Shdaifat, Amjad; Al-Abdouh, Ahmad Ali; Aburoman, Mohammad Ibrahim; Otoum, Sara Mohammad; Sweedan, Amro Ghaleb; Khrais, Ibrahim; Abdel-Hafez, Ibrahim Hisham & Johannessen, Asgeir (2017). Diabetes Risk Score in a Young Student Population in Jordan: A Cross-Sectional Study. Journal of Diabetes Research.  ISSN 2314-6745.  2017 . doi: 10.1155/2017/8290710
  • Al-Shudifat, Abdel-Ellah; Johannessen, Asgeir; Azab, Mohammed; Al-Shdaifat, Amjad; AbuMweis, Suhad Sameer; Agraib, Lana & Tayyem, Reema (2017). Risk factors for coronary artery disease in patients undergoing elective coronary angiography in Jordan. BMC Cardiovascular Disorders.  ISSN 1471-2261.  17(1) . doi: 10.1186/s12872-017-0620-4
  • Desalegn, Hailemichael; Aberra, Hanna; Berhe, Nega; Gundersen, Svein Gunnar & Johannessen, Asgeir (2017). Are non-invasive fibrosis markers for chronic hepatitis B reliable in sub-Saharan Africa?. Liver international (Print).  ISSN 1478-3223.  37(10), s 1461- 1467 . doi: 10.1111/liv.13393
  • Tayyem, Reema; Al-Shudifat, Abdel-Ellah; Johannessen, Asgeir; Bawadi, H A; AbuMweis, Suhad Sameer; Agraib, Lana; Allhedan, S S; Haj-Husein, I & Azab, Mohammed (2017). Dietary patterns and the risk of coronary heart disease among Jordanians: A case–control study. NMCD. Nutrition Metabolism and Cardiovascular Diseases.  ISSN 0939-4753.  28(3), s 262- 269 . doi: 10.1016/j.numecd.2017.10.026
  • Stene-Johansen, Kathrine; Yaqoob, Nadeem; Øverbø, Joakim; Aberra, Hanna; Desalegn, Hailemichael; Berhe, Nega & Johannessen, Asgeir (2016). Dry blood spots a reliable method for measurement of Hepatitis B viral load in resource-limited settings. PLOS ONE.  ISSN 1932-6203.  11(11) . doi: 10.1371/journal.pone.0166201 Fulltekst i vitenarkiv.
  • Johannessen, Asgeir (2015). Where we are with point-of-care testing. Journal of Viral Hepatitis.  ISSN 1352-0504.  22(4), s 362- 365 . doi: 10.1111/jvh.12385
  • Pettersen, Pernille; Brox, Ida Katarina; Naman, Ezra; Bruun, Johan N; Dyrhol-Riise, Anne Ma; Trøseid, Marius & Johannessen, Asgeir (2015). Antiretroviral treatment failure predicts mortality in rural Tanzania. International Journal of STD and AIDS.  ISSN 0956-4624.  26(9), s 633- 639 . doi: 10.1177/0956462414548460
  • Brantsæter, Arne; Johannessen, Asgeir; Holberg-Petersen, Mona; Sandvik, Leiv; Naman, Ezra; Kivuyo, Sokoine; Rollag, Halvor; Bruun, Johan N & Kvale, Dag (2012). Cytomegalovirus viremia in dried blood spots is associated with an increased risk of death in HIV-infected patients: a cohort study from rural Tanzania. International Journal of Infectious Diseases.  ISSN 1201-9712.  16(12), s E879- E885 . doi: 10.1016/j.ijid.2012.08.003
  • Johannessen, Asgeir; Garrido, Carolina; Zahonero, Natalia; Naman, Ezra & de Mendoza, Carmen (2011). HIV-1 drug resistance testing from dried blood spots collected in rural Tanzania using the ViroSeq HIV-1 Genotyping System. Journal of Antimicrobial Chemotherapy.  ISSN 0305-7453.  66(2), s 260- 264 . doi: 10.1093/jac/dkq433
  • Johannessen, Asgeir; Naman, Ezra; Gundersen, Svein Gunnar & Bruun, Johan Nikolai (2011). Antiretroviral treatment reverses HIV-associated anemia in rural Tanzania. BMC Infectious Diseases.  ISSN 1471-2334.  11 . doi: 10.1186/1471-2334-11-190 Fulltekst i vitenarkiv.
  • Kivuyo, Sokoine; Johannessen, Asgeir; Trøseid, Marius; Kasubi, Mabula Joseph; Gundersen, Svein Gunnar; Naman, Ezra; Mushi, Daniel E.; Ngowi, Bernard James; Mfinanga, Sayoki Godfrey M. & Bruun, JN (2011). p24 antigen detection on dried blood spots is a feasible and reliable test for infant HIV infection in rural Tanzania. International Journal of STD and AIDS.  ISSN 0956-4624.  22(12), s 719- 721 . doi: 10.1258/ijsa.2009.009382
  • Bratholm, Clara Sofie; Johannessen, Asgeir; Naman, Ezra; Gundersen, Svein Gunnar; Kivuyo, Sokoine; Holberg-Petersen, Mona; Ormaasen, Vidar & Bruun, Johan N (2010). Drug resistance is widespread among children who receive long-term antiretroviral treatment at a rural Tanzanian hospital. Journal of Antimicrobial Chemotherapy.  ISSN 0305-7453.  65(9), s 1996- 2000 . doi: 10.1093/jac/dkq234 Fulltekst i vitenarkiv.
  • Johannessen, Asgeir (2010). Dried blood spots in HIV monitoring: applications in resource-limited settings. Bioanalysis.  ISSN 1757-6180.  2(11), s 1893- 1908 . doi: 10.4155/BIO.10.120
  • Johannessen, Asgeir; Holberg-Petersen, Mona; Løvgården, Gunilla; Naman, Ezra; Ormaasen, Vidar; Matee, Mecky I; Gundersen, Svein Gunnar & Bruun, Johan N (2010). HIV type-1 drug resistance testing on dried blood spots is feasible and reliable in patients who fail antiretroviral therapy in rural Tanzania. Antiviral Therapy.  ISSN 1359-6535.  15(7), s 1003- 1009 . doi: 10.3851/IMP1660 Vis sammendrag
  • Johannessen, Asgeir; Garrido, Carolina; Zahonero, Natalia; Sandvik, Leiv; Naman, Ezra; Kivuyo, Sokoine; Kasubi, Mabula J.; Gundersen, Svein Gunnar; Bruun, Johan N & de Mendoza, Carmen (2009). Dried Blood Spots Perform Well in Viral Load Monitoring of Patients Who Receive Antiretroviral Treatment in Rural Tanzania. Clinical Infectious Diseases.  ISSN 1058-4838.  49(6), s 976- 981 . doi: 10.1086/605502 Vis sammendrag
  • Johannessen, Asgeir; Garrido, Carolina; Zahonero, Natalia; Sandvik, Leiv; Naman, Ezra; Kivuyo, Sokoine; Kasubi, Mabula; Gundersen, Svein G; Bruun, Johan N & Mendoza, Carmen de (2009). Dried Blood Spots perform well in viral load monitoring of patients who receive antiretroviral treatment in rural Tanzania. Clinical Infectious Diseases.  ISSN 1058-4838.  49, s 976- 981 . doi: 10.1086/605502
  • Johannessen, Asgeir; Naman, Ezra; Kivuyo, Sokoine; Kasubi, Mabula J.; Holberg-Petersen, Mona; Matee, M.; Gundersen, Svein Gunnar; Gundersen, Svein Gunnar & Bruun, Johan N (2009). Virological efficacy and emergence of drug resistance in adults on antiretroviral treatment in rural Tanzania. BMC Infectious Diseases.  ISSN 1471-2334.  9, s 8 Vis sammendrag
  • Johannessen, Asgeir; Naman, Ezra; Kivuyo, Sokoine; Kasubi, Mabula; Holberg-Petersen, Mona; Matee, Mecky I; Gundersen, Svein Gunnar & Bruun, Johan N (2009). Virological efficacy and emergence of drug resistance in adults on antiretroviral treatment in rural Tanzania. BMC Infectious Diseases.  ISSN 1471-2334.  9, s 108 . doi: 10.1186/1471-2334-9-108
  • Johannessen, Asgeir; Trøseid, Marius & Calmy, Alexandra (2009). Dried blood spots can expand access to virological monitoring of HIV treatment in resource-limited settings. Journal of Antimicrobial Chemotherapy.  ISSN 0305-7453.  64(6), s 1126- 1129 . doi: 10.1093/jac/dkp353
  • Johannessen, Asgeir; Naman, Ezra; Ngowi, Bernard; Sandvik, Leiv; Matee, Mecky I; Aglen, Henry; Gundersen, Svein G & Bruun, Johan N (2008). Predictors of mortality in HIV-infected patients starting antiretroviral therapy in a rural hospital in Tanzania. BMC Infectious Diseases.  ISSN 1471-2334.  (8), s 52
  • Johannessen, Asgeir; Naman, Ezra; Ngowi, Bernhard J; Sandvik, Leif; Matee, M.; Aglen, Henry E; Gundersen, Svein Gunnar & Bruun, Johan N (2008). Predictors of mortality in HIV-infected patients starting antiretroviral therapy in a rural hospital in Tanzania. BMC Infectious Diseases.  ISSN 1471-2334.  8, s 10 Vis sammendrag

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Publisert 8. des. 2020 14:40 - Sist endret 30. apr. 2021 15:20