There are about 292 clinical studies being (or have been) conducted in Zambia. 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 purpose of this study was to examine, in an integrated and comprehensive fashion, three critical questions currently facing HIV-infected pregnant and postpartum women and their infants: 1. What is the optimal intervention for the prevention of antepartum and intrapartum transmission of HIV? 2. What is the optimal intervention for the prevention of postpartum transmission in breastfeeding (BF) infants? 3. What is the optimal intervention for the preservation of maternal health after the risk period for prevention of mother-to-child-transmission ends (either at delivery or cessation of BF)? The overall PROMISE protocol had three separate interventional components to address each of these three questions and was conducted at locations in Africa and other parts of the world. Due to variations in the standard of care for HIV-infected pregnant and postpartum women and their infants at different sites, not all of these questions were relevant. Therefore, two separate versions of the PROMISE protocol were developed, each containing only the relevant components. The 1077BF protocol was used at sites where the standard method of infant feeding was breastfeeding, whereas the 1077FF protocol was used at sites where the standard method of infant feeding was formula feeding. The analyses were collapsed across the two protocol versions, and therefore the summaries contain the results of the 1077BF and/or the 1077FF protocols.
Malaria is a major contributor of disease burden in Sub-Saharan Africa: 90% of global cases occur there, and pregnant women and children under 5 years are the most vulnerable. Malaria in pregnancy increases risks of abortion, stillbirth, prematurity, intrauterine growth retardation and maternal anemia, and is associated with higher risk of low birth weight and perinatal, neonatal and infant mortality. For prevention and control of malaria in pregnancy, the WHO recommends Intermittent Preventive Treatment (IPT) with antimalarial drugs, insecticide treated nets (ITNs) and effective treatment of malaria and anemia. HIV in pregnancy increases the risks of malaria, and it seems that the efficacy of IPT with the drug sulphadoxine-pyrimethamine (SP) is decreased in HIV+ pregnant women. Malaria prevention in pregnancy in Zambia relies on ITNs and IPT with SP. Daily prophylaxis with cotrimoxazole (CTX) effectively reduces mortality and morbidity in HIV+ individuals, and antibiotic therapy during pregnancy might help to decrease adverse pregnancy outcomes. CTX prophylaxis improves birth outcomes in HIV+ women with CD4<200/µl: a study concluded that antenatal provision of CTX was beneficial for HIV+ pregnant women with low CD4 but not in women with ≥200/µl (however, this study was carried out in an area with very low risk of malaria , and CTX may have a different effect depending on endemic conditions). The WHO recommends daily CTX in addition to ARVs, to prevent opportunistic infections in all HIV+ patients. Concurrent administration of SP and CTX may increase the incidence of severe adverse reactions in HIV+ patients, so WHO has promoted CTX prophylaxis as an alternative to SP for the IPT in immuno-compromised pregnant women. Unfortunately, there is insufficient information on the effectiveness of daily CTX for preventing malaria infection in pregnancy: so, SP is still the only antimalarial recommended by WHO for this purpose. With the increase in SP resistance and with the newer antimalarials still being studied for safety and efficacy in pregnancy, CTX could be an alternative for SP in reducing malaria and malaria-related morbidity and mortality in pregnancy. This study will try to to see if in HIV- and HIV+ pregnant women, CTX is not inferior to SP in reducing placental parasitaemia. Such information is needed to issue updated, effective guidelines on malaria prevention in pregnancy
The trial aim is to ascertain what, if anything, needs to be combined with a boosted protease inhibitor (bPI) backbone in second-line therapy in order to maximize the chance of a good clinical outcome following WHO-defined failure on a first-line nucleoside reverse transcriptase inhibitor (NRTI) and NNRTI-containing regimen with probable extensive NRTI and NNRTI resistance mutations.
The rationale for the study stems from the goal of reducing the very high unmet need for family planning among women in their first year postpartum. It is understood that the reason this need is so high in general is because postpartum women do not always "demand" family planning services, and family planning providers do not always "supply" services to postpartum (amenorrheic) women who do "demand" them. To address these supply and demand problems, corresponding supply and demand solutions will be tested. 1. Demand Generating Strategy—Integrate into Immunization Services Following birth, return to fertility among postpartum women is dependent on many factors. These include time since last birth, breastfeeding intensity, and menstrual status. However, when and how fertility returns is often misunderstood by women. For instance, many women think that they can not get pregnant before their menses return, or that as long as they are breastfeeding they are protected from pregnancy. Educating women about their return to fertility following giving birth, and reminding women about the importance of birth spacing for their health and the health of their children is the focus of the demand-generating strategy. To reach postpartum women with these messages a demand generating activity at immunization clinics will be conducted, as immunization services are well attended. Based on the recommended immunization schedules for infants, women will make several visits to these clinics throughout the course of their first year postpartum, which provides an ideal opportunity to "hit" them with family planning messages more than once. To aid providers of immunization services in their delivery of family planning messages, a simple job aid was developed. The job aid takes providers through a series of 3 questions that will allow the provider to determine a mother's immediate risk for pregnancy (based on LAM criteria). If a woman is currently at risk for pregnancy, it prompts the provider to give a healthy timing and spacing message and to make a referral to the family planning clinic. If a woman is not currently at risk for pregnancy, the job aid helps the provider instruct the mother about when her risk for pregnancy will change, and therefore when she will need to seek family planning services to achieve proper birth spacing (should this be desirable to the mother). Also, in the family planning (FP) clinics that are located in the same facility as the immunization clinic, providers will be given the pregnancy checklist. This job-aid has already been researched (refer to citations). The purpose of providing it is to make sure that when women are referred to FP clinics by immunization providers, FP providers will supply them with a method. As a consequence, it hoped that by the time women are 9-12 months postpartum, there will be an increase in uptake of non-condom family planning methods. 2. Supply Solution—Diversify Tools Available to Rule-Out Pregnancy The supply strategy focuses on giving providers the tools to give contraceptive methods to women who are amenorrheic. As recommended by the WHO, it is standard practice for FP providers to rule out the possibility of pregnancy before providing many types of methods to their clients. The presence of menses is often used to make this determination. However, return of menses can be delayed for many months in the postpartum period, limiting a provider's ability to supply postpartum women with contraceptive methods. To overcome this challenge, the Pregnancy Checklist was developed. It is a job-aid designed to rule out pregnancy based on client responses to questions concerning her recent sexual and reproductive history. Urine pregnancy testing is another viable option for ruling out pregnancy in non-menstruating FP clients, especially in situations where providers feel they cannot trust women to answer questions honestly. Thus, family planning clinics will be provided with free pregnancy test strips, and the change in same day uptake of FP methods will be measured. Hypotheses 1. Providing family planning messages to women attending immunization clinics with their child will cause them to seek family planning services in a greater proportion at 9-12 postpartum. 2. The availability of free pregnancy testing will increase same day method provision for new and restarting family planning clients.
No randomized clinical trial to date has demonstrated a survival benefit of using regular HIV-1 ribonucleic acid (RNA) viral load (VL) testing to monitor patients' responses to antiretroviral therapy (ART) for HIV infection. The measurement of VL is recommended to monitor the response to ART in developed countries. In resource-constrained settings, the World Health Organization (WHO) does not recommend routine VL testing, in part due to the cost and complex infrastructure needed for reliable results. In these settings, WHO has proposed the use of clinical and CD4+ lymphocyte-based criteria to guide treatment decisions. However, multiple studies have demonstrated the poor performance of these criteria in sub-Saharan Africa and the frequent discordance between immunologic and virologic responses to ART. The use of routine viral load monitoring should be evaluated in resource-constrained settings. The investigators hypothesize that routine viral load testing of patients on ART will improve patient survival, decrease disease progression and development of drug resistance, and will be feasible and cost-effective for resource-constrained settings.
This phase 2 study will evaluate the safety, immunogenicity and optimal timing of two injections at three dose levels of the tgAAC09 vaccine in healthy volunteers. Study volunteers will receive two intramuscular injections of tgAAC09 or placebo at Months 0 and 6 (groups A, C, E and G) or at Months 0 and 12 (groups B, D and F) and be followed for a total of 18 months following the first injection with the exception of group G in which volunteers will be followed for 12 months after the first injection (6 months after the second injection). This study will explore whether boosting is possible, and compare a shorter and more practical six-month time interval with a twelve-month time interval.
Rotavirus is the leading cause of severe diarrhea in infants and young children, accounting for 45% of severe diarrhea disease in both developed and developing countries. Annually, rotavirus causes approximately 111 million episodes of gastroenteritis requiring home care, 25 million clinic visits, 2 million hospitalizations, and approximately 440,000 deaths in children less than 5 years of age, of which approximately 90% of hospitalizations and 99% of deaths occur in developing countries. Although rotavirus infection is not more common in HIV-infected children, it complicates their care and interferes with their nutrition. Chances of death by these infections can be greater in HIV-infected children when they also suffer from wasting, malnutrition, and/or opportunistic infections. The primary purpose of this study was to evaluate the safety and immunogenicity of the Rotavirus vaccine candidate, RotaTeq, in HIV-infected and uninfected children born to HIV-infected mothers.
REMoxTB is a study for the "Rapid Evaluation of Moxifloxacin in the treatment of sputum smear positive tuberculosis". REMoxTB aims to find and evaluate new drugs and regimens that shorten the duration of tuberculosis therapy. The purpose of REMoxTB is to evaluate the efficacy, safety and acceptability of two moxifloxacin-containing treatment combinations to determine whether substituting ethambutol with moxifloxacin in one combination, and/or substituting isoniazid with moxifloxacin in another combination, makes it possible to reduce the duration of treatment for TB.
Malaria is the most important human parasitic disease and is responsible of high morbidity and mortality in resource-poor countries. Pregnant women, who are a high-risk group, are almost always excluded from clinical trials; thus, the investigators lack sufficient information on the safety and efficacy of most antimalarials in pregnancy. The recommendation of the World Health Organization to use artemisinin combination therapy (ACT) in the 2nd and 3rd trimester is already implemented in several African countries, however documentation of their efficacy and safety in pregnancy is still limited. Thus, the investigators propose to evaluate the efficacy and safety of 4 ACT(artemether-lumefantrine, amodiaquine-artesunate, mefloquine-artesunate and dihydroartemisinin-piperaquine), when used to treat pregnant women with P. falciparum malaria; the results will help to recommend the optimal therapy for this high-risk group in Africa.
Citrulline is an amino acid produced in the intestine and in the liver, but the liver does not contribute significantly to circulating citrulline concentrations. The intestine is thus the only organ that normally releases significant amounts of citrulline into the blood stream. The investigators have designed a study looking at the value of measuring plasma citrulline concentration in patients with tropical enteropathy of mixed HIV status. The focus will be on the ability of the intestine to sustain the individual concerned from a nutritional standpoint. The investigators hypothesise that plasma citrulline concentration is a marker of small bowel absorptive integrity and an appropriate surrogate for HIV related enteropathy.