There are about 69 clinical studies being (or have been) conducted in Cameroon. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The primary aim of this project is to determine changes in the vibriocidal geometric mean titers (GMT) in subjects who receive the second dose of oral cholera vaccine (OCV) at different intervals: 2 weeks, 6 months, or 11 months following the first dose of vaccine. Secondary aims include a) vibriocidal antibody response rates in subjects who receive OCV at 2 weeks, 6 months, or 11 months following the first dose of vaccine, b) age specific serum vibriocidal GMTs following the second dose among participants given the second dose of OCV at intervals of 2 weeks, 6 months, or 11 months following the first dose of vaccine, c) GMT and antibody response rates of Immunoglobulin A (IgA) and Immunoglobulin G (IgG) anti-lipopolysaccharide (LPS) as measured by ELISA following the second dose among participants given the second dose of OCV at intervals of 2 weeks, 6 months, or 11 months following the first dose of vaccine. The hypothesis is that the vibriocidal GMT following the second dose, when given after 6 or 12 months will not be inferior to the response when the second dose is given according to the standard interval of two weeks.
Recent advances in molecular diagnostics of tuberculosis, especially the GeneXpert Mycobacterium tuberculosis/Rifampicin test have reduced the time to diagnose Rifampicin Resistant Tuberculosis (RR-TB) but only rifampicin resistance is diagnosed, leading to presumptive diagnosis of resistance to isoniazid and maybe other drugs. Thus in low and middle income countries, most drug sensitivity testing relies on phenotypic drug resistance testing, which takes up to 4 months. In addition, currently, culture on monthly sputum samples is recommended by the World Health Organization for follow-up of Rifampicin Resistant Tuberculosis patients under treatment. Unfortunately, culture is often not locally available and samples need to be transported from field to culture laboratories. The associated transport delays lead to high rates of contamination and false negative culture, particularly in laboratories in low resource settings. Many gaps for the diagnosis and management of RR-TB patients still need to be addressed and the DIAMA project (DIAgnostics for Multidrug resistant tuberculosis in Africa) study aims to address some of them.
This study, performed over a course of 3 years in 5 collaborating hospitals in Cameroon, Africa, will randomize 750 women in labor with prolonged rupture of membranes ≥ 12 hours or prolonged labor ≥ 24 hours to 1 gram of oral azithromycin, 1 gram of azithromycin+2 grams of amoxicillin, compared to usual care (placebo). Women will be followed to ascertain maternal infectious outcomes and perinatal outcomes.
FEVRIER study is an observatory of hospitalizations in cardiology units in sub-Saharan Africa.
About three quarters of the viral agents that have emerged recently in humans are considered to originate from other animals. These viruses have often evolved and spread into the human population through various mechanisms after the initial contact that resulted in interspecies transmission. However, knowledge of the initial stages of the emergence of viruses and associated diseases is still limited in many cases. Microbiological monitoring in populations at risk of transmission would provide insights into the initiation and early stages of the emergence process. Nonhuman primates (NHPs) share many genetic, physiological, and microbiological features with humans, and are potential sources of many infectious agents. This has been demonstrated for several simian retroviruses. HIV-1 and 2 are believed to have originated from chimpanzee and mangabey viruses, respectively, found in Central and West Africa. The current distribution of the various molecular subtypes of the HTLV-1 oncogenic retrovirus in Africa is mainly the result of numerous instances of interspecies transmission of STLV-1from NHP species in the distant past. Foamy viruses belong to the Retrovidae family and the Spumavirus genus. They are complex exogenous retroviruses and are very common in many animal species, including primates, cats, cattle, and horses, in which they cause persistent infections. The first aim of the work is to study the epidemiological and molecular aspects of the transmission of foamy viruses from monkeys to humans in populations at risk, such as the inhabitants (especially hunters) in the villages of the dense forests of southern Cameroon. It is an area in which NHPs are still very common, with a great diversity of species. The investigators have already shown that the prevalence of foamy viruses is very high in these monkeys and great apes (gorillas and chimpanzees). Contact between these monkeys and the villagers is very frequent, mainly during hunting. The second aim of the project is to study the clinical and biological features of infected people and investigate intrafamilial transmission from infected index cases.
The study is to be performed in public health facilities in Central and West Africa where Pyramax will be used as treatment of uncomplicated malaria episodes, including repeat episodes. The study is to assess the safety of Pyramax, particularly in patients with underlying liver function abnormalities, in patients who have co-morbid conditions, such as HIV, and also in very small children (<1 year of age).
There is substantial evidence that early childhood development (ECD) programming can improve child health and development outcomes. An important component of ECD programming is supporting positive parenting and early stimulation practices. While many parents could benefit from such programming, mothers that are HIV-infected may particularly benefit given the higher risks of poorer child development among HIV-exposed children. Catholic Relief Services (CRS) in Cameroon is implementing the Key Interventions to Develop Systems and Services (KIDSS) ECD program for HIV-exposed children. The program will include home-, facility-, and community-based components. This impact evaluation will ascertain to what extent the KIDSS home-based component of the ECD model affects attainment of age-appropriate developmental milestones (measured by the Ages and Stages Questionnaire 3 (ASQ-3)) in HIV-exposed children in Cameroon. The study design is a cluster-randomized controlled trial with a cohort of 200 mother/child dyads across 10 study clinics. HIV+ mothers will be recruited during pregnancy and their children will be followed up until 18 months of age. The intervention group will receive regular home-based ECD services focused on positive parenting and early stimulation as well as exposure to facility- and community-based ECD programming. The control group will only have exposure to the facility- and community-based ECD programming. Randomization occurs at the clinic (cluster) level.
The CADRE study is a multinational observational cohort of patients with sickle-cell disease (SCD) in five west and central sub-Saharan African countries. The aim of this project is to describe the incidence and assess the predictive factors of SCD-related micro- and macro-vascular complications in sub-Saharan Africa.
STUDY OBJECTIVE To confirm the incidence of in-hospital postoperative complications in adult surgical patients in Africa. STUDY DESIGN Seven day, African national multi-centre prospective observational cohort study of adult (≥18 years) patients undergoing surgery. Patients will be followed up for a maximum of 30 days. We will follow the original International Surgical Outcomes Study (ISOS) study design. The primary outcome is in-hospital postoperative complications in adult surgical patients in Africa. Secondary outcomes include in-hospital mortality and the relationship between postoperative complications and postoperative mortality. The intention is to present a representative sample of surgical outcomes across all African countries. This study will run between February and March 2016.
The Active Search for Pediatric HIV/AIDS (ASPA) aims at assessing the acceptability, feasibility and effectiveness of the targeted provider-initiated-testing and counseling (tPITC) in comparison with the blanket provider-initiated-testing and counseling (bPITC) among children and adolescents in Cameroon. The new knowledge generated will inform programming of more suitable strategies to identify HIV-infected children and adolescents and this will contribute to reducing the current global gap in HIV treatment among this subpopulation group.