Effective regulation of medical products requires a comprehensive legal basis with appropriate and adequate governance mechanisms; sound technical expertise and scientific tools; sustainable funding; coordination of regulatory activities; and monitoring and evaluation to assess performance [6, 12]. The legal basis gives the NMRA power to perform a function while the level of autonomy in executing its mandate, the appropriate structure that allows for proper coordination of various regulatory activities, availability of financial resources and adequate number of human resources with requisite competency to carry out their duties are prerequisites to its performance [13]. The core NMRA functions include: marketing authorization (MA); licensing of manufacturing establishments; imports and export control; inspection of manufacturing premises and distribution channels; market surveillance (product quality monitoring, pharmacovigilance, control of drug promotion and advertising); quality control; and oversight of clinical trials on drugs [12].
This paper focuses on policy and legal basis for regulation; organisational set-up; management systems; financing mechanisms; human resources and performance of core NMRA functions.
NMRAs Organizational Setup, Financing and Management System
According to WHO, there are 54 NMRAs in Africa [1]. All countries in Africa except the Sahrawi Republic have an NMRA or an administrative unit carrying out some or all tasks expected of NMRAs as shown in Table 1. One country—United Republic of Tanzania—has two NMRAs, namely the Tanzania Food and Drugs Authority and the Zanzibar Food and Drugs Board. While NMRAs in Africa have varying degrees of maturity, their organisational structures, remits and activities also vary widely, some being semi-autonomous whilst others operate within the Ministry of Health (MoH). Some regulate only medical products, whilst others regulate food and cosmetics as well. All NMRAs eventually report to the MoH with the Minister of Health having overall responsibility.
Table 1 Organisational set-up and functions performed by NMRAs in Africa
The limited available data on NMRAs’ financing show the main sources of revenue for NMRAs are fees for registration, annual product maintenance, plant audit, premises licensing, import permits, and government subvention and donor funding. A study on the East African Community (EAC) NMRAs shows that the Tanzania Food and Drugs Authority (TFDA), Kenya Pharmacy and Poisons Board (KPPB) and National Drug Authority (NDA) of Uganda charge fees for regulatory work and receive minimal or no government subvention, while in Zanzibar, Rwanda and Burundi, governments fully fund regulatory work [14]. Similarly, in the Southern African Development Community (SADC) region, the Governments of Lesotho and Namibia fund their NMRAs fully, while in Malawi, Tanzania, Zambia and Zimbabwe, most of the funds are from industry fees. Of 26 countries included in a study, 35% of the NMRAs depended on government funding, with all fees paid directly to Treasury, whereas 15% of NMRAs received donor funding, with most countries charging fees for initial MA of products, renewal and retention. Fees for importation of products were rarely charged [12]. More research is needed to determine the various funding models for NMRAs in Africa and mechanisms that will ensure sustainability.
Looking at human resources for NMRAs, reports indicate a general lack of qualified assessors and inspectors [12]. A study conducted in Angola revealed critical understaffing in the Department of Pharmaceutical Inspection (DIF), with a total of 33 staff members at central level, 2 inspectors per province and 1 inspector per municipality [15]. In the EAC countries, there is a general human resource constraint of staff to assess applications and issue licences [16]. Inadequate and unsustainable availability of human resource is a problem affecting most developing countries and is largely caused by low salaries, scarcity of pharmaceutical and other essential professionals, shortage of training institutions, inflexible recruitment procedures, lack of career structure and incentives, and the ‘brain drain’ [17].
While it is generally agreed that most NMRAs in Africa lack qualified experts to perform critical regulatory functions, the existing literature focuses largely on availability of human resource development plans, job descriptions and responsibilities of key personnel [12]. Literature is sparse when it comes to recording actual numbers of those employed and the requisite expertise and competencies matched to various regulatory functions. Quantifying the existing regulatory expertise in Africa is important, especially given the enormous investment by governments and development partners in training of regulatory experts.
Policy and Medical Products Regulatory Framework
National Medicines Policies (NMPs) are overarching government commitments to ensure access, quality, and rational use of drugs in a country including a statement on regulation of medicines [18]. Most African countries have NMPs which support regulation of medical products. For instance, review of NMP frameworks in the SADC region shows that, with the exception of Seychelles, most of the medicine laws in the region are backed by NMPs [19]. In the Central African region, Angola, Chad, Equatorial Guinea and the Democratic Republic of Congo have NMPs in place, whilst in the Economic Community of West African States (ECOWAS) region Burkina Faso, Cape Verde, the Gambia, Ghana, Liberia, Niger, Nigeria, Republic of Guinea, Senegal and Togo have NMPs [14].
Medicines Laws form the foundation for regulation and they need to be comprehensive, covering all areas of pharmaceutical sector activities and a broad range of medical products, and provide adequate powers to the NMRA to control and regulate the pharmaceutical market [13]. A situational analysis of NMRAs in WHO-AFRO region shows that 40 out of 46 of the countries have legislation for medical products, though only 7 (15%) of the NMRAs are legally mandated to perform all five critical regulatory functions [12]. A study conducted in the EAC Partner States revealed some commonalities and disparities of laws with varying degree of implementation and capacity [20]. In the SADC region, all 15 countries have medicines laws with varying degree of comprehensiveness, scope of regulated products, and functions [19]. For the ECOWAS region, 11 countries have medicines laws in place with similar variations, as with the SADC and EAC regions [14].
While WHO recommends that all types of medicines be regulated by NMRAs, there is wide variation across countries in Africa. Of 26 NMRAs, 65% have a mandate to control veterinary medicines; 69% had provisions for regulation of traditional or herbal medicines; 65% regulate a wide range of products including foods, pesticides, poisons, bottled water, cosmetics and/or animal food supplements; and only 15% are mandated to perform all regulatory functions [12]. The differences in legal provisions of key regulatory functions and practices have potentially delayed availability of important medicines in some markets; hence, the need for convergence towards a common medicines regulatory framework which will also facilitate benchmarking among countries in Africa.
NMRAs Performance of Core Regulatory Functions
Marketing authorisation (MA) Available literature on MA shows that the time it takes for the applicant to be granted MA affects availability of the product on the market. A typical lag of 4–7 years has been recorded between first regulatory submission to a well-resourced NMRA and final approval in sub-Saharan Africa [21]. Lengthy registration times is one of the reasons why companies refuse to supply medicines to certain African countries [22]. Studies also show that the growing demand to assess novel neglected-disease products for African use have necessitated the establishment of various regulatory pathways to facilitate approval including the European Medicines Agency (EMA) Article 58; the WHO Prequalification Scheme; and the United States Food and Drug Administration (US-FDA) Tentative Approval [23]. The performance of MA systems in Africa needs further research, as do licensing, import and export control systems. The available literature on the latter, conducted in Angola, indicates that licensing of pharmaceutical establishments is only granted for retail outlets, leaving the remaining supply chain unattended [24]. While the situation may not be very different in most African countries, more research is needed to determine the performance of NMRAs across the continent in this area.
Pharmacovigilance An assessment of pharmacovigilance (PV) systems in 26 sub-Saharan African countries showed that only 8 (30%) countries collected reports on adverse events with only 3 programmes being sufficiently established to contribute a sizeable number of reports. Of the eight countries collecting adverse events, seven were members of the WHO Programme for International Drug Monitoring (PIDM), and in those countries where a PV system existed, it was not well integrated with other regulatory activities [12]. Membership to the WHO-PIDM is one of the criteria used to determine the performance of PV systems in a country [24, 25]. Membership requires a designated national PV centre, a spontaneous adverse drug reaction (ADR) reporting system, and demonstration of technical competence in managing individual case safety reports (ICSRs) by submitting at least 20 reports to the WHO ICSR database, VigiBase™ [26]. The number of countries that are full members of WHO-PIDM increased from five in 2000 to 35 countries in 2015 with South Africa, Morocco, Nigeria, Egypt and Kenya classified as the main ICSR reporting countries [26]. A further review of specific features of PV in Africa shows that, while the health systems are weak and lacking in basic infrastructure, personnel, equipment and facilities, they have been deploying millions of doses of medicines and vaccines to address diseases of public health importance [25], which calls for a robust PV system.
Post-Marketing Surveillance Post-marketing surveillance (PMS) activities in a country comprise an elaborate framework which includes: review of authorised products; random audits of notified variations; good manufacturing practice (GMP) inspections of local manufacturers; laboratory testing of samples either selected randomly or suspected of being substandard; monitoring of adverse drug reactions; monitoring of advertising and other promotional activities; and drug utilization studies, to mention a few [27]. The importance of PMS activities in the region is easily demonstrated: PMS of antimalarial medicines in Malawi indicated an 88.4% failure rate of samples tested, suggesting the presence of substandard products in the market and the need for intervention and regular monitoring to ensure delivery of quality health care [28]. In Kenya, a survey of antiretroviral medicines revealed that, while samples analysed conformed to quality standards, one-third of the products found in the market were not registered [29]. A survey of quality of antimalarial drugs circulating in Cameroon, Ethiopia, Ghana, Kenya, Nigeria and the United Republic of Tanzania indicated that 14% of collected samples were not registered by the respective NMRA and the overall failure rates of samples tested were 37, 0, 39, 5, 64 and 11%, respectively [30]. In the case of vaccines, strong partnerships and collaboration between different stakeholders is needed to assure that vaccines are effective and safe when translated in real-world settings [31].
A low rate of post-marketing withdrawal of harmful medicinal products due to adverse drug reactions is attributed to regulatory capacity limitation by most African countries [32]. According to the WHO rapid alert system, there is increasing circulation of substandard and falsified (SSFF) medical products in the African Region and surveys show quality failure rates of up to 28% in some cases [33].
Quality Control Quality control aims to verify that products comply with specifications of MA and testing of post-marketing samples serves as a deterrent against negligent or fraudulent manufacturing and trading practice [13]. NMRAs’ access to well-resourced quality control laboratories, which operate according to established standards and organisational frameworks, is key for quality surveillance of products circulating in the market [12]. The Quality Management System (QMS) ISO 17025 and the WHO Guidance on Good Laboratory Practice [34,35,36] are global benchmarking tools for measuring standards for QC laboratory performance. Achieving either WHO Prequalification or ISO 17,025 accreditation status ensures that a laboratory has demonstrated technical competence to produce precise and accurate data, and that it meets internationally accepted standards of quality and reliability [37].
Reports shows that 34 countries in SSA (72%) have quality control laboratories in place, at different stages of development; 21 of these (63%) are engaged in market surveillance [33]. There are nine WHO Prequalified Laboratories in seven African countries, namely: Adcock Ingram Limited and Research Institute for Industrial Pharmacy incorporating CENQAM (South Africa); National Pharmaceutical Control Laboratory (Algeria); Laboratory of the Mission for Essential Drugs and Supplies and National Quality Control Laboratory (Kenya); Medicines Control Authority of Zimbabwe (MCAZ) QC Laboratory (Zimbabwe); NDA—National Drug Quality Control Laboratory (Uganda); TFDA QC Laboratory (Tanzania); and the National Medicines Quality Control Laboratory (Morocco) [38]. In addition, six QC laboratories in Africa are ISO 17025 Certified [39]. These are; the Ethiopian Food, Medicine and Health Care Administration and Control Authority (FMHACA) Laboratory Services Division (Ethiopia); Centre for Pharmaceutical Advancement and Training (CEPAT) Accra, and Food and Drugs Authority Laboratory (Ghana); Inlab Laboratoria de control de qualidade Inpharma (Cape Verde); and MCAZ (Zimbabwe) and TFDA (Tanzania).
Effective and efficient quality-control laboratories provide a useful infrastructure for PMS activities that are critical to address the challenge of the prevalence of SSFF medical products in Africa.
Clinical trials oversight In view of the high burden of diseases affecting Africa and other developing countries in the world, clinical trials are needed to develop new and effective drugs and vaccines for diseases such as HIV, TB and malaria [6, 21, 40, 41]. The increasing evidence of a shift in the location of clinical trials from industrialised to developing countries, particularly in Africa, requires an independent and strong regulatory and ethical oversight of clinical trials to ensure the safety of research subjects and scientific integrity of clinical data.
Prior to 2006, regulation of clinical trials was limited to ethics review by ethics committees (ECs) in most countries in Africa with the exception of South Africa, where there was an existing level of expertise in clinical trials oversight. Problems were compounded by a lack of legislative and regulatory frameworks for regulation of clinical trials of medicines that would keep pace with new trends in drug research and development [42, 43]. The initiation of the AVAREF by WHO in 2006 with an initial 19 member-countries, paved the way for improved performance in the approval of clinical trials for vaccines through a network of regulatory authorities and ethics committees [44, 45]. The AVAREF has, over the years, facilitated approval of important vaccines such as the conjugate meningitis A vaccine, which has contributed to reduction of meningitis epidemics [46, 47]. With the expansion to 23 member-countries, AVAREF has also served as a collaboration platform bringing regulators, ethics committees and sponsors together to reach consensus on key ethical and regulatory questions, particularly in addressing challenges of authorising clinical trials of Ebola candidate vaccines with limited available data in West Africa [48].
Further initiatives, which additionally promote the safe and ethical conduct of trials in Africa, include the European and Developing Countries Clinical Trials Partnership [42, 49]; the AMRH Initiative [2]; the Initiative to Strengthen Health Research Capacity in Africa [43] and the Pan-African Clinical Trials Registry (PACTR), which was established in 2012 [50]. The latter was designed to increase clinical trial registration, provide an open-access platform for free registration of clinical trials and serve the needs of Africans. PACTR, based in South Africa, works in collaboration with the Cochrane Infectious Diseases Group, the Cochrane HIV/AIDS Group and WHO.