Øystein Haarklau Johansen

university of bergen

9H指数

20论文数

303被引数

收录论文 10

发表时间

Diagnostic Methods for Cryptosporidiosis in Low- and Middle-Income Countries: A Systematic Narrative Review 低收入和中等收入国家隐孢子虫病的诊断方法：一项系统叙述性综述

The Journal of Infectious Diseases

IF0

2026-01-01

PREAI

Tewachew Awoke; Asnake Simieneh; Fregenet Tesfaye; Øystein Haarklau Johansen; Delfino Vubil; Berhanu Yitayew; Abel Abera Negash; Kurt Hanevik

Evaluation of rectal swab compared to bulk stool sampling for detection of Cryptosporidium infection by light-emitting diode auramine-phenol microscopy in young children with diarrhoea 与常规粪便采样相比，采用LED auramine-phenol显微镜检测年轻腹泻儿童隐孢子虫感染时，直肠棉签采样的评估。

Clinical Microbiology and Infection

IF8.5

2025-12-29

PREAI

Degu Abate; Lucy J. Robertson; Berhanu Seyoum; Yadeta Dessie; David Carmena; Øystein Haarklau Johansen; Rea Tschopp; Alemseged Abdissa; Kurt Hanevik

Genetic diversity of Cryptosporidium isolates from young children and livestock in eastern Ethiopia 来自埃塞俄比亚东部幼童和牲畜的隐孢子虫分离株的遗传多样性

Current Research in Parasitology & Vector-Borne Diseases

IF3.1

2025-06-11

OAAI

Degu Abate; Rea Tschopp; Berhanu Seyoum; Yadeta Dessie; Mahlet Osman Hassen; Gizachew Gemechu; Gebeyehu Assefa; Øystein Haarklau Johansen; Pamela C. Köster; Alejandro Dashti; Sergio Sánchez; Kurt Hanevik; Lucy J. Robertson; David Carmena; Alemseged Abdissa

Cryptosporidium species and subtypes in Norway: predominance of C. parvum and emergence of C. mortiferum

EMERGING MICROBES & INFECTIONS

IF7.5

2024-10-13

OAAI

Tipu, Jahid Hasan; Sivertsen, Audun; Afset, Jan-Egil; Sandven, Lars; Brekke, Hanne; Lund, Hilde Marie; Elburg, Linnea Sofie; Gaustad, Peter; Lier, Tore; Tverelv, Liv Reidun; Johansen, Oystein Haarklau; Robertson, Lucy J.; Hanevik, Kurt

Gut microbiota patterns associated with duration of diarrhea in children under five years of age in Ethiopia

NATURE COMMUNICATIONS

IF15.7

2024-09-02

OAAI

Tesfaw, Getnet; Siraj, Dawd S.; Abdissa, Alemseged; Jakobsen, Rasmus Riemer; Johansen, Oystein H.; Zangenberg, Mike; Hanevik, Kurt; Mekonnen, Zeleke; Langeland, Nina; Bjorang, Ola; Safdar, Nasia; Mapes, Abigail C.; Kates, Ashley; Krych, Lukasz; Castro-Mejia, Josue L.; Nielsen, Dennis S.

Oocyst Shedding Dynamics in Children with Cryptosporidiosis: a Prospective Clinical Case Series in Ethiopia

MICROBIOLOGY SPECTRUM

IF3.8

2022-08-31

OAAI

Johansen, Oystein H.; Abdissa, Alemseged; Bjorang, Ola; Zangenberg, Mike; Sharew, Bizuwarek; Alemu, Yonas; Moyo, Sabrina; Mekonnen, Zeleke; Langeland, Nina; Robertson, Lucy J.; Hanevik, Kurt

A comparison of risk factors for cryptosporidiosis and non-cryptosporidiosis diarrhoea: A case-case-control study in Ethiopian children

PLOS NEGLECTED TROPICAL DISEASES

IF3.4

2022-06-06

OAAI

Johansen, Oystein Haarklau; Abdissa, Alemseged J.; Zangenberg, Mike; Mekonnen, Zeleke; Eshetu, Beza; Sharew, Bizuwarek; Moyo, Sabrina; Sommerfelt, Halvor; Langeland, Nina; Robertson, Lucy; Hanevik, Kurt

Performance and operational feasibility of two diagnostic tests for cryptosporidiosis in children (CRYPTO-POC): a clinical, prospective, diagnostic accuracy study

LANCET INFECTIOUS DISEASES

IF31

2021-05-01

OAAI

Johansen, Oystein H.; Abdissa, Alemseged; Zangenberg, Mike; Mekonnen, Zeleke; Eshetu, Beza; Bjorang, Ola; Alemu, Yonas; Sharew, Bizuwarek; Langeland, Nina; Robertson, Lucy J.; Hanevik, Kurt

A Feasible Laboratory-Strengthening Intervention Yielding a Sustainable Clinical Bacteriology Sector to Support Antimicrobial Stewardship in a Large Referral Hospital in Ethiopia

FRONTIERS IN PUBLIC HEALTH

IF3.4

2020-06-23

OAAI

Yansouni, Cedric P.; Seifu, Daniel; Libman, Michael; Alemayehu, Tinsae; Gizaw, Solomon; Johansen, Oystein Haarklau; Abebe, Workeabeba; Amogne, Wondwossen; Semret, Makeda

Metronidazole-sensitive organisms in children with severe acute malnutrition: an evaluation of the indication for empiric metronidazole treatment

CLINICAL MICROBIOLOGY AND INFECTION

IF8.5

2020-02-01

OAAI

Zangenberg, M.; Abdissa, A.; Johansen, O. H.; Tesfaw, G.; Girma, T.; Kurtzhals, J. A. L.

研究方向