Harry van Loen

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The last decade has witnessed a substantial increase of multi-centre, public health-oriented clinical trials in poor countries. However, non-commercial research groups have less staff and financial resources than traditional commercial sponsors, so the trial teams have to be creative to comply with Good Clinical Practices (GCP) requirements. According to(More)
BACKGROUND Visceral leishmaniasis (VL) has become an important opportunistic infection in persons with HIV-infection in VL-endemic areas. The co-infection leads to profound immunosuppression and high rate of annual VL recurrence. This study assessed the effectiveness, safety and feasibility of monthly pentamidine infusions to prevent recurrence of VL in HIV(More)
Benin has recently shifted its national antimalarial drug policy from monotherapies to combinations containing artemisinin derivatives. When this decision was taken, the available information on alternatives to chloroquine and sulphadoxine-pyrimethamine, the first- and second-line treatment, was sparse. In 2003 – 2005, before the drug policy change, a(More)
BACKGROUND Research is ongoing to develop multipurpose vaginal rings to be used continuously for contraception and to prevent Human Immunodeficiency Virus (HIV) infection. Contraceptive vaginal rings (CVRs) are available in a number of countries and are most of the time used intermittently i.e. three weeks out of a 4-week cycle. Efficacy trials with a(More)
Malaria is a leading cause of mortality, particularly in sub-Saharan African children. Prompt and efficacious treatment is important as patients may progress within a few hours to severe and possibly fatal disease. Chlorproguanil-dapsone-artesunate (CDA) was a promising artemisinin-based combination therapy (ACT), but its development was prematurely stopped(More)
Katja Polman, Sören L. Becker, Emilie Alirol, Nisha K. Bhatta, Narayan R. Bhattarai, Emmanuel Bottieau, Martin W. Bratschi, Sakib Burza, Jean T. Coulibaly, Mama N. Doumbia, Ninon S. Horié, Jan Jacobs, Basudha Khanal, Aly Landouré, Yodi Mahendradhata, Filip Meheus, Pascal Mertens, Fransiska Meyanti, Elsa H. Murhandarwati, Eliézer K. N’Goran, Rosanna W.(More)
Clinical malaria incidence was determined over 18 months in a cohort of 553 children living in a peri-urban area near Cotonou. Three cross-sectional surveys were also carried out. Malaria incidence showed a marked seasonal distribution with two peaks: the first corresponding to the long rainy season, and the second corresponding to the overflowing of Lake(More)
BACKGROUND Diarrhoea still accounts for considerable mortality and morbidity worldwide. The highest burden is concentrated in tropical areas where populations lack access to clean water, adequate sanitation and hygiene. In contrast to acute diarrhoea (<14 days), the spectrum of pathogens that may give rise to persistent diarrhoea (≥14 days) and persistent(More)
Function Activities Study physician  Explain in detail the sample collection procedures to the patient (i.e. how to fill the sample container, amount of stool needed, when to hand in the sample, etc), provide brochure if available  Provide a properly labelled container to patient. Laboratory technician  Receive sample from patient, check labelling (refer(More)