Local production of pharmaceuticals in Africa and access to essential medicines: 'urban bias' in access to imported medicines in Tanzania and its policy implications.

BACKGROUND: International policy towards access to essential medicines in Africa has focused until recently on international procurement of large volumes of medicines, mainly from Indian manufacturers, and their import and distribution. This emphasis is now being challenged by renewed policy interest in the potential benefits of local pharmaceutical production and supply. However, there is a shortage of evidence on the role of locally produced medicines in African markets, and on potential benefits of local production for access to medicines. This article contributes to filling that gap. METHODS: This article uses WHO/HAI data from Tanzania for 2006 and 2009 on prices and sources of a set of tracer essential medicines. It employs innovative graphical methods of analysis alongside conventional statistical testing. RESULTS: Medicines produced in Tanzania were equally likely to be found in rural and in urban areas. Imported medicines, especially those imported from countries other than Kenya (mainly from India) displayed 'urban bias': that is, they were significantly more likely to be available in urban than in rural areas. This finding holds across the range of sample medicines studied, and cannot be explained by price differences alone. While different private distribution networks for essential medicines may provide part of the explanation, this cannot explain why the urban bias in availability of imported medicines is also found in the public sector. CONCLUSIONS: The findings suggest that enhanced local production may improve rural access to medicines. The potential benefits of local production and scope for their improvement are an important field for further research, and indicate a key policy area in which economic development and health care objectives may reinforce each other.

Prevalence and management of intestinal helminthiasis among HIV-infected patients at Muhimbili National Hospital.

OBJECTIVE: A cross-sectional study was conducted at Muhimbili National Hospital (Tanzania) to determine prevalence of helminthiasis among in-patients with HIV/AIDS. METHODOLOGY: After signing an informed consent form, participants answered a sociodemographic and risk factor questionnaire. Fecal specimens from patients with HIV-infected and uninfected patients were screened for intestinal helminthiasis (IHLs) using coprological methods. RESULTS: A total of 146 patients were recruited, of those 66 were HIV-negative while 80 were HIV-negative patients. Thirty-five patients (12 HIV/AIDS and 23 non-HIV/AIDS) had helminthic infections. Hookworms were the most frequently detected helminths among patients living with HIV/AIDS (13.6%) and HIV-negative patients (17.5%), followed by schistosomiasis (9%) detected among HIV-negative individuals only. CONCLUSION: Prevalence of helminthiases (HLs) was observed to be relatively lower among HIV-infected than uninfected patients, which is ascribable to prophylactic measures adopted for patients with HIV/AIDS. Thus, it is recommended that routine screening for HLs and prophylactic measures should be adopted for the improvement of patients' health status.

Prehospital treatment of burns in Tanzania: a mini-meta-analysis.

The present study describes initial burn injury care in Tanzania-materials applied, sources of information, reasons for applying the materials, and time to a health centre-in order to suggest ways to optimize initial care. Eight small studies were conducted in which burn-injured patients were interviewed who had been admitted to referral hospitals in four regions in Tanzania. Most burn injuries in Tanzania occur in the home cooking area, and it was found that the first responders were family members, friends, and neighbours. A total of 710 burn victims were interviewed. Twenty-four different materials were applied to the patients' wounds. The most common application was honey. Only 14.3% of the victims received the recommended form of care: application of cool water. It was also found that nothing was applied to the wounds of 17.5% of these patients by first responders. Sources of information on burn treatment were family, friends and neighbours, and, less often, health workers or the media. Most of the burn victims' households had enough water to enable administration of recommended initial care. The main impediment to the provision of appropriate initial treatment of a burn appears to be lack of correct and useful knowledge about what to do immediately after the injury. A two-pronged educational approach should be used to improve care. A national mass media campaign should start immediately to inform ordinary citizens about proper initial treatment of burns. In addition, curricula of all schools that train health workers need to be reviewed for accuracy, and appropriate knowledge about initial care of burn victims should be added if necessary. Measures to improve burn first aid, are relatively easy, even in a low-income country such as Tanzania.

Existence of antimalarial formulations with low bioavailability in Tanzania.

The main objective of this work was to assess the relative bioavailability of two tablet formulations containing sulfadoxine/pyrimethamine (SP) and marketed in Tanzania. Twelve healthy volunteers were randomized to receive a single oral dose of three SP tablets each containing 500 mg sulfadoxine (SDX) and 25 mg pyrimethamine (PYR) in a form of either A (a locally manufactured SP tablet formulation, manufactured by a local pharmaceutical industry in Tanzania) or B (Fansidar), Hoffmann La Roche, Basel, Switzerland, an innovator's SP) after an overnight fasting. Serial blood samples (100 microL) were collected from a finger prick in duplicate up to 10 days and dried on Whatman filter paper. The samples were assayed for SDX and PYR using high-performance liquid chromatographic methods. Pharmacokinetic parameters of SDX and PYR were estimated by single compartment method. The pharmacokinetics of formulation A--maximum plasma concentration, the areas under the plasma concentration--time curve and the relative bioavailability (A versus B) were significantly lower than those of formulation B (P < 0.1). These observed differences indicate bioinequivalence between the two products.

Intravaginal gels as drug delivery systems.

Recently, there has been a great deal of interest in the design and application of different dosage forms via the vaginal route. Several studies have proven that the vagina is an effective route for drug administration intended mainly for local action, but systemic effects of some drugs also can be attained. The major advantages of this route include accessibility, good blood supply, the ability to bypass first-pass liver metabolism, and permeability to large molecular weight drugs, such as peptides and proteins. Among the delivery systems proposed for this route is the use of intravaginal gels, which have been found to be potential vaginal drug delivery systems. The bioadhesives used in the formulation of gels play a key role in the release of the drug through the attachment to the vaginal mucosa, where the drug diffuses from the gel to the mucus.

Prevalence and management of helminthiasis among underfives living with HIV/AIDS at Amana Hospital, Tanzania.

OBJECTIVE: This was a cross-sectional study intended to assess the prevalence and management of helminthiasis (HL) among underfives living with HIV/AIDS (ULHA). METHODOLOGY: Clinical histories of ULHA were scrutinized for HIV/AIDS status, antiretroviral therapy (ART), HL prevalence, and their management. RESULTS: About 364 ULHA were studied, 213 (58.5%) were girls and 151 (41.5%) were boys. Of the 364 ULHA, 171 (47.5%) had HL and 64.3% were treated with albendazole (ABZ). Trichuriasis was ascribed to 23.6% of HL. Majority (72.5%) of ULHA had a CD4 count below 200 cells/mm³. Direct association was observed between CD4 counts and HL. About 55% ULHA were on lamivudine (3TC)-stavudine (d4T)-nevirapine (NVP; LSN) combination therapy. The ABZ-LSN combination was frequently used for HIV/AIDS and HL management. CONCLUSION: High prevalence of HL and vivid correlation between HIV status and HL were observed. The LSN-ABZ combination was frequently employed for management of HIV/AIDS and HL. We recommended prompt diagnosis of HL to avoid acceleration of HIV infection to AIDS.

Burns in Tanzania: morbidity and mortality, causes and risk factors: a review.

Burn injuries in low and middle income countries still remain a significant health problem, even though numbers of burn injuries in high income countries have decreased showing that such events are not "accidents" but are usually preventable. WHO states that the vast majority (over 95%) of fire-related burns occur in low and middle income countries. Burn injuries are a major cause of prolonged hospital stays, disfigurement, disability, and death in Africa Region. Evidence shows that prevention strategies can work. However prevention strategies need to be tailored to the specific environment taking into account local risk factors and available resources. An examination of the patterns and causes of burns should allow site specific recommendations for interventions. This literature review, specific to the United Republic of Tanzania, was conducted by researching PubMed, SafetyLit, and African Journals on Line data bases for primary sources using key words plus . Two sets of student data collected as part of Bachelor's degree final dissertations at Muhimbili University of Health and Allied Sciences were used. In all, twenty two primary sources were found. Risk factors for burn morbidity in Tanzania are: 1/ a young age, especially years 1-3, 2/ home environment, especially around cooking fires, 3/ epilepsy, during seizures, and 4/ perceived inevitability of the incident. It was expected that ground level cooking fires would be found to be a risk factor, but several studies have shown non-significant results about raised cooking fires, types of fuel used, and cooking appliances. Risk factors for burn mortality are: being male, between 20-30 years of age, and being punished for alleged thieving by community mobs. An important factor in reducing burn morbidity, especially in children, is to educate people that burns are preventable in most cases and that most burns occur in the home around cooking fires. Children need to be kept away from fires. Epileptics should be monitored for medication and kept away from cooking fires as well. Community members need to be encouraged to bring wrong doers to the police.