06 March 2014
Tuberculosis control in big cities and urban risk groups in the European Union:
a consensus statement
In low-incidence countries in the European Union (EU), tuberculosis (TB) is concentrated in big cities, especially among certain urban high-risk groups including immigrants from TB high-incidence countries, homeless people, and those with a history of drug and alcohol misuse. Elimination of TB in European big cities requires control measures focused on multiple layers of the urban population. The particular complexities of major EU metropolises, for example high population density and social structure, create specific opportunities for transmission, but also enable targeted TB control interventions, not efficient in the general population, to be effective or cost effective. Lessons can be learnt from across the EU and this consensus statement on TB control in big cities and urban risk groups was prepared by a working group representing various EU big cities, brought together on the initiative of the European Centre for Disease Prevention and Control. The consensus statement describes general and specific social, educational, operational, organisational, legal and monitoring TB control interventions in EU big cities, as well as providing recommendations for big city TB control, based upon a conceptual TB transmission and control model.
The city can have as much reduction of preventable disease as it wishes to pay for. Public health is purchasable; within certain natural limitations a city can determine its own death rate.
Hermann Biggs, New York City Board of Health, Annual Report, 1915
In low-incidence settings, which include most countries in the European Union (EU), tuberculosis (TB) is concentrated in big cities . TB disproportionally affects certain, often overlapping, urban groups such as immigrants from TB high-incidence countries, homeless people, those with a history of drug and alcohol misuse, and people with a history of imprisonment [2–11]. Prevention and control of TB among these risk groups can be hampered by delayed diagnosis, onward transmission and poor treatment adherence [12–16]. For effective TB control, services in EU big cities should be acceptable, accessible, adequate, appropriate and geared towards the needs of urban risk groups. In the last decade, innovative TB control activities in EU big cities have been reported, including mobile digital chest X-ray screening [16–19], the employment of community health workers and peer-educators [20,21], the use of mobile telephone-assisted or video-observed medication monitoring systems [22,23], and the application of molecular epidemiology [24–27]. Systematic implementation of evidence-based and innovative approaches to improve early case finding, case holding and treatment completion in urban risk groups is urgently needed. Exchange of experience from different urban TB programmes in the EU will be key to achieving European TB control.
In February 2008, the European Centre for Disease Prevention and Control (ECDC) published the Framework Action Plan to fight tuberculosis in the European Union, providing proposals on what needed to be done in EU Member States to decrease the burden of TB . The report recognises the concentration of TB in hard-to-find and hard-to-reach populations as one of the major challenges to TB control efforts across the EU and a key strategic element to reduce and eliminate TB. The EU action plan provides an opportunity to re-think urban TB control, specifically among vulnerable populations in the EU, and strengthen work through the exchange of experience, collaborative research, advocacy and cooperation. In this statement, we have summarised key evidence-based and expert opinion-led recommendations to inform the control of TB in big EU cities. For each recommendation, we have provided a brief background and a summary of the evidence available.
Informal contacts have existed between some big cities in the EU for over a decade. In October 2005, the Municipality of Paris organised a conference on metropolitan TB in Europe and the theme of TB in big cities was discussed at the 5th European TB conference of the International Union Against Tuberculosis and Lung Disease (The Union) in Dubrovnik in 2009 . During the Wolfheze Conference in 2010 , TB control in big cities in Europe featured in the programme for the first time and as a result of this meeting ECDC agreed to facilitate a workshop on urban TB control in December 2010. TB programme managers and TB control physicians from 10 big cities in eight EU countries attended the event in Stockholm and a working group gradually developed and generated this consensus statement on TB control in big cities and urban risk groups in the EU. The preliminary outcomes of a survey on the epidemiology of TB in big cities in the EU, as well as the process and the progress of the working group, were presented at the 2011 Wolfheze conference.
This consensus statement is based upon a conceptual model of structural and intermediate determinants (explained in the next section) of TB exposure, infection, disease and treatment , as well as interventions for TB control, especially in urban risk populations (Figure 1). Each section begins with a discussion of the background of general interventions and specific elements for TB control in big cities, and is then followed by agreed recommendations to achieve control of TB in EU cities. These recommendations are rated in accordance with the Scottish Intercollegiate Guidelines Network (SIGN) grading system (Table 1) . Rating was perfomed by one of the authors (RWA) and subsequently ratified by the expert group Detailed information (checklists and critical appraisals) of the SIGN grading process is available on request from the corresponding author. The literature was selected by authors of the consensus statement in a non-systematic search. SIGN grading was developed for the assessment of evidence in clinical studies and is not necessarily directly applicable to all public health interventions. Therefore a risk–benefit, feasibility, cost-effectiveness and value–acceptability assessment of the recommendations has been added in addition to the SIGN grading (Table 2). Due to differences in the ratio of urban and national TB notification rates in EU Member States, this statement has concentrated on urban TB and control in low-incidence (<20 TB notifications/100,000 population) EU countries according to ECDC definition . Although there is a great deal of relevant literature on urban TB and control outside the EU (especially in North America), for the purpose of this consensus statement the working group has focused on European publications when available.
Figure 1. Conceptual model of structural and intermediate determinants of tuberculosis and areas of possible interventions, based on the natural history of tuberculosis from exposure through to infection and disease and treatment
Table 1. Rating levels of the evidence used to make recommendations to inform tuberculosis control in big cities in the European Union, made in accordance with the Scottish Intercollegiate Guidelines Network (SIGN) grading system
Table 2. Assessment of the recommendations to inform tuberculosis control in big cities in the European Union, by evidence grading, risk–benefit, feasibility, cost-effectiveness and value–acceptability
Social determinants and interventions
Social determinants, including structural (e.g. social, political, cultural and economic, health system) or intermediary (e.g. crowded living conditions) and the value of equity are major factors that influence health outcomes . Wealth, health and infection inequalities that influence TB morbidity and mortality rates exist in and between EU countries [35–38], and are probably affected by economic crises .
Social determinants and big cities
Social determinants of TB are not exclusive to big cities but urbanisation and the associated poverty and overcrowding that is more commonly found in these locations, impact on the levels of TB . In many big cities outside and inside the EU, socio-economically disadvantaged populations are more prevalent. This is putting all residents at greater risk of TB acquisition but is particularly increasing the risk among certain urban subpopulations [2, 41–43]. Immigrants, legal or undocumented, form a substantial proportion of big city populations in the EU and can contribute considerably to TB incidence [24,42]. Household overcrowding is often found in urban areas and is related to TB incidence [42,44]. Specific urban overcrowding has been described well in shelters for homeless people or facilities for people with drug misuse; two socially excluded groups that are often over-represented in EU big cities [7,18,19,24]. Social determinants are fundamental causes of TB in EU big cities and therefore solutions to control TB must tackle these issues . A social outreach model of care has been advocated , including the role of a link worker who can enable integrated health and social care, by, for example, resolving issues related to health, housing need, welfare benefits and immigration, as well as clinical management issues .
Big city TB control programmes should:
1.1. advocate for sustained political commitment to emphasise the social determinants of health that put subgroups of the population at increased risk of TB;
1.2. investigate and monitor inequalities and socio-economic deprivation and their links with TB in order to intervene with a comprehensive public health approach [28,37,38];
1.3. collaborate to promote suitable housing for homeless people in order to prevent transmission of TB and promote cure in this population [48-51];
1.4. provide access to social support for all vulnerable populations, irrespective of their status [52-54];
1.5. identify barriers and promote access to healthcare services for all those at risk of TB .
Awareness: information and education interventions
Targeted provision of information to raise awareness among high-risk groups, in the form of leaflets or through the Internet, has been used for diseases other than TB, such as diabetes, HIV or breast cancer [55,56]. There is an increased drive to use raising awareness as a measure for TB control and to improve knowledge of TB among high-risk groups and the staff who work with them .
Awareness and big cities
Initiatives for raising awareness, such as active information and education strategies, should target urban TB risk groups, those working with urban TB risk groups, and healthcare professionals in urban areas [11,23]. To avoid stigmatisation, awareness of TB in risk groups in big cities can be improved on an opportunistic basis, for example, when a patient comes into contact with healthcare services for consultation or screening [11,58–61]. There is evidence from an educational intervention in London that promotion of screening in primary care can improve early identification of both active TB and latent TB infection (LTBI) .
Big city TB control programmes should:
2.1. implement a coordinated programme of education and training to raise and sustain awareness among affected risk groups and communities , front-line professionals working with high-risk groups [11,21], and health and social care professionals, such as general practitioners [11,58,62];
2.2. involve affected communities in the design and delivery of training and awareness raising programmes, taking into account cultural, language and literacy issues .
Infection control in community settings
Infection control (IC) is an essential component of TB control and prevention and is included in the EU Standards of TB Care . Shortcomings in IC have been major contributors to nosocomial outbreaks, including outbreaks in European TB reference centres . Poor ventilation and overcrowding have been drivers of TB transmission in congregate settings such as homeless shelters, prisons and safe drug consumption facilities. General IC principles for healthcare settings can benefit these specific congregate venues . New interest in IC has been awakened by the emergence of multidrug-resistant (MDR) and extensively drug-resistant (XDR) TB .
Infection control in community settings and big cities
Nosocomial transmission of TB in urban hospitals [67,68], and effective IC measures in these healthcare settings , have been described in the EU. Transmission in hostels and shelters attended by risk groups, and prisons in big cities in the EU, have been suggested by conventional epidemiological studies  and strong evidence is supplied by molecular epidemiological studies using DNA fingerprint cluster analysis [13,16,19,71–75]. Congregate settings in big cities in the EU can implement hygienic measures (proper room ventilation and illumination, no overcrowding, cough hygiene) and organise TB awareness-raising activities. They can also implement administrative control activities (early guided referral of residents suspected of having TB for diagnosis and isolation), and motivate residents to participate in contact tracing or radiographic screening [16,17,19]. IC can also prevent TB infection or disease among healthcare workers and social workers in big cities [13,65].
Big city TB control programmes should:
3.1. ensure implementation of IC measures in congregate settings used by urban high-risk groups (in addition to healthcare settings); these should follow national or international best practice guidelines .
TB control depends on early case finding and successful treatment . Active case finding aims to identify those with TB who have not presented themselves to the healthcare system of their own accord, in order to reduce TB transmission . Active case finding can be performed through symptom screening, questionnaire-based screening (including risk factors), radiographic (e.g. chest X-ray) screening, sputum examination (e.g. microscopy, culture or rapid molecular techniques, including automated nucleic acid amplification tests). Reviews of contact tracing and immigrant screening in the EU [77,78], and effectiveness and cost-effectiveness of TB screening, have been published recently . Disparities in active case finding in the EU have been described .
Case finding and big cities
The assumption that urban TB risk groups will present promptly, complete a diagnostic process that is sometimes difficult and prolonged, and take treatment lasting a minimum of six months is not a basis for effective TB control . Active case finding among urban high-risk groups should be complemented by tailored strategies for completion of the diagnostic process and treatment. These strategies include low-threshold public health TB ‘one-stop shops’ with sufficient nursing, social and community healthcare worker staff, appropriate outpatient clinical follow-up or the ability to admit patients to general hospitals or modern-day sanatoria (also called tertiary TB treatment centres). Policies should be backed up by adequate legal frameworks for social support and protection and ensure knowledge about and facilitate access to healthcare services [4,5,21,52,80]. Controversies and unresolved issues in active TB case finding among urban hard-to-reach groups have been recently addressed . Contact tracing may not be feasible or effective for all urban risk groups, but can be in specific populations such as household or professional contacts [5,13]. Indiscriminate radiographic screening of immigrants is described as inefficient and not cost-effective [10,76,79,81,82]. However, some interventions that may not be effective when applied to the general population may be highly effective or cost-effective when targeted at specific urban high-risk groups, for example, homeless people and prisoners [10,16,17,19, 83–85]. Studies on longitudinal radiographic screening programmes for urban risk groups in the EU are limited but provide evidence that socially excluded and vulnerable urban risk groups can be reached [18,86], and that TB transmission can be controlled [16,19]. The National Institue for National Health and Care Excellence (NICE) has recently published guidelines advising TB screening in hostels for homeless people and prisons [11,87]. ECDC and the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) have recently published guidance on prevention and control of infectious diseases in people who inject drugs .
Big city TB control programmes should:
4.1. implement and monitor contact tracing according to national guidelines and international best practice consensus [21,78,89¬–91];
4.2. ensure that national guidelines for screening of immigrants are implemented ;
4.3 consider targeted radiographic screening (e.g. mobile or static digital X-ray units) of urban high-risk groups, especially homeless people, people with drug and alcohol misuse, and prisoners [11,16–19,83,85];
4.4 implement measures such as TB ‘one-stop shops’ to ensure that suspected TB cases in urban high-risk groups are not lost before confirmation or exclusion of disease [11,21,63].
Case holding and treatment
After case detection, TB control is founded on supporting patients to start and complete a long and occasionally complicated (e.g. due to adverse effects) course of treatment. The impact of poor compliance can be profound, both to the patient and to public health . Treatment adherence is dependent on factors related both to the patient (e.g. language barriers or lifestyle factors) and to the provider (e.g. accessible, acceptable, adequate, appropriate and flexible services including treatment supervision and enhanced case management). Treatment supervision, such as directly observed therapy (DOT), requires adequate staffing levels based upon TB notification rates [4,5,80,92]. Enhanced case management requires multidisciplinary services such as specialist TB nurses, outreach social workers, TB link workers (or peer-support workers) with attention for any legal, social, housing or financial problems [5,17,46,47]. Conventional incentives and enablers, such as prepaid travel cards for public transport, can be used to increase adherence, as well as monetary incentives, which are controversial but have been demonstrated to be effective . Innovative ways to increase adherence to TB treatment using modern technology should be explored as they have been in the field of human immunodeficiency virus (HIV) infections [22,23,94,95]. When patients are either too medically or socially complex to be treated in a general hospital or on an outpatient basis, modern-day sanatoria can be invaluable [96,97]. Cohort reviews are key to improving case management and have played a major role in increasing treatment completion rates [7,98,99].
Case holding and treatment and big cities
Failure to attend appointments with medical or public health services is well-known among certain urban risk groups for TB [4,15]. For immigrants, factors such as legal, cultural, and language issues, socio-economic barriers and lack of knowledge about the healthcare system can result in taking the wrong medication or poor treatment adherence . People who are homeless, or who have a history of drug or alcohol misuse, or of imprisonment, are all groups associated with poor adherence, and comprised 44% of cases lost to follow-up in London [7,31,101]. However, treatment completion can be very high among drug and alcohol misusers and homeless people in an adequate urban TB control programme with strict treatment supervision and potential mandatory isolation . For case holding in big cities, the TB control programme should closely cooperate with related services, such as HIV programmes , services for people with a history of drug and alcohol misuse , prison services , asylum seeker services , and services for homeless people [13,16]. The use of supervised housing for homeless TB patients appears to be both effective and cost-effective [49, 50]. Outreach services can reduce hospitalisation and therefore costs [103, 104]. Establishment of TB link workers can reduce failed attendance through use of telephones, SMS reminders or accompanied referrals [17,22,23,46,47]. Specific attention is needed for undocumented migrants to ensure completion of treatment .
Big city TB control programmes should:
5.1. be complemented with social support systems directed towards the different risk groups, such as accommodation for homeless people or access to methadone replacement programs for people with drug misuse [11,49,50,88];
5.2. identify patients who can benefit from DOT prior to treatment, with DOT being considered for patients with risk factors for non-adherence as part of a patient-centred care plan [11,63,105,106];
5.3. provide low-threshold and accessible services that are staffed according to TB notification rate and establish partnerships with other relevant healthcare providers working with groups at high risk of TB, to support treatment continuity [4,5,11,47,63,107,108];
5.4. consider provision of incentives and enablers, peer-support workers and modern information technology to improve treatment adherence and outcomes [11,17,22,23,46,47,93,94];
5.5. be supported by EU healthcare regulation allowing undocumented migrants to complete TB treatment in the country of diagnosis [52-54].
Latent tuberculosis infection
The primary aim of screening for LTBI is to prevent TB disease. Aspects of active screening for LTBI in the EU , a European consensus statement on TB contact tracing , ECDC guidance on the use of interferon-gamma release assay (IGRA) for diagnosis of LTBI , and controversies and unresolved issues regarding LTBI screening of immigrants and urban risk groups, including cost-effectiveness , have been published elsewhere. Screening for LTBI should be risk-based and not population-based [110,111]. Priority for LTBI screening in EU countries is usually given to recent contacts, children, immunocompromised patients and healthcare workers .
Latent tuberculosis infection and big cities
Recent immigrants, who are usually overrepresented in big cities, and urban risk groups for TB are often screened for TB disease [16,17,77,113]. Testing for LTBI is less frequently reported [6,76]. Screening of immigrants for LTBI can be cost-effective depending on preventive treatment completion [10,81,114] but is often poorly implemented  and the expected reduction of TB incidence has been questioned . Immigrant screening can be performed in primary care settings in big cities [58, 59] and this location has been reported to be acceptable to the immigrant population . The management of LTBI in urban risk groups such as homeless people or people with drug misuse is controversial. Although the prevalence of LTBI is likely to be higher than in the general population, screening opportunities are limited by the hard-to-reach and hard-to-treat characteristics of these subgroups. Additionally, drug and alcohol misuse and co-infection with HIV or other blood-borne viruses increase the probability of adverse reactions to preventive treatment [10,13]. Identification of active TB among homeless people was found to be more important . The prevalence of LTBI upon detention in European prisons can be high, but diagnosis of TB disease usually remains the priority [119,120]. Novel approaches to improve preventive treatment completion in deprived populations, such as shorter or simpler regimens, are urgently needed, and should be implemented as they have been in the United States [10,121,122].
Big city TB control programmes should
6.1. offer LTBI screening to urban risk groups only when an effective programme exists for active case finding and holding in these groups;
6.2. offer LTBI screening according to national guidelines, accompanied by a clear plan on preventive treatment;
6.3. organise a risk-based approach to LTBI screening, prioritising people who are at highest risk of infection or progression [63,78,112,123].
Recent advances in molecular biology have provided new tools to better comprehend the epidemiology and transmission of TB disease. Mycobacterium tuberculosis strain genotyping or DNA fingerprinting has been widely used in population-based studies to determine the extent of ongoing TB transmission and risk factors in various communities [124,125]. Insights and applications of DNA fingerprinting in TB control have been described in review articles [126–128]. In the ECDC follow-up to the EU Action Plan to fight TB, genotyping of M. tuberculosis was proposed as a useful way of systematically monitoring disease transmission .
DNA fingerprinting and big cities
The contribution of DNA fingerprinting to conventional epidemiological data in the context of urban TB control has been described elsewhere . Briefly, molecular indications for epidemiological links and identification of risk factors for transmission are crucial for understanding the specific epidemiology of TB in big cities, allowing the detection of risk groups and informing (targeted) public health interventions [13,16]. Urban TB cases are more often seen in foreign-born patients than cases in rural areas because of the higher proportion of migrant population in these cities. Most of these cases have a reactivation of an infection acquired in the patient’s native country  However, DNA fingerprinting has revealed that in urban migrant cases, transmission is frequently also recent, more often than in non-urban migrant cases . Molecular epidemiological studies identified factors for a higher risk of clustering, reflecting the risk of infection, such as alcohol or intravenous drug misuse, homelessness, or certain ethnic backgrounds . They also confirmed high-risk sites for TB transmission in big cities, including congregate settings such as shelters for homeless people or prisons. Fingerprinting can also support extension of outbreak investigations and has been used to monitor trends and evaluate interventions, most specifically in urban areas .
Big city TB control programmes should:
7.1. complement routine surveillance activities and contact tracing with molecular epidemiology to identify unexpected spreading of TB and outbreaks, and to evaluate interventions .
General policy, legal framework and organisation of services
General policy: general background
Organisation and policies of TB control in the EU have been discussed in review articles covering standards of care , contact tracing , immigrant screening , active case finding  and cost-effectiveness . The organisation as well as the legal framework for TB control differs between EU countries. These differences reflect variations in service delivery models, infectious disease law, public health responsibilities, organisation and legal background of screening and the implementation of mandatory isolation .
General policy and big cities
Organisational aspects of big city TB control have recently been described . Lack of central planning, political commitment and mechanisms to commission city-wide services have created barriers to implementation of evidenced-based and cost-effective services for case finding and case holding . Increasing rates of TB have been found where big city TB control systems are fragmented and involve a high number of clinical settings [4,131]. Many of the high-risk TB patients found in big cities have complex social, medical and economic needs, and multi-disciplinary teams, networking, for example, with experts in relevant co-morbidities such as HIV and hepatitis C and community and patient groups and sharing of experience between practitioners, are important in the organisation and provision of care in these settings.
Legal framework general background
Multiple laws can provide the legal framework for TB control in a country. Infectious disease acts and reports regulate the various responsibilities of national and local authorities, notification or reporting and surveillance of TB or TB-HIV, screening and mandatory isolation in case of threats to public health [132–134]. International legislation (e.g. Universal Declaration of Human Rights European Convention on Human Rights [135,136]) state that any application of restrictions, including mandatory isolation, requires (i) a legal basis and (ii) reasonable evidence that the restrictions are necessary to protect public health. The public health argument for compulsory TB screening of immigrants and mandatory isolation is sometimes questioned [137,138].
Legal framework and big cities
A legal framework for notification should provide the information for surveillance, cross-sectional studies and cohort reviews in big cities. [7,98,99] Non-compliant infectious TB patients are common in EU big cites, especially among urban TB risk groups . The use of mandatory isolation is rarely used in some big cities in the EU . Legal frameworks for mandatory isolation can be part of a successful urban TB control programme, if implemented when extensive attempts to support the patient have failed, for example through DOT, incentives and enablers, and social support .
Big city TB control programmes should:
8.1. be supported by high-level political commitment;
8.2. be organised to ensure accessibility for patients and include sufficient staff and expertise [4,5,11,80];
8.3. promote strong collaboration and coordination between sectors as a prerequisite to ensure delivery of the proposed recommendations;
8.4. have community and patient engagement programmes and address the problem of stigmatisation [58–61];
8.5. use involuntary isolation only as a measure of last resort under humane conditions;
8.6. contribute to a European network to facilitate the exchange of experience between programmes and allowing external assessment.
Strategy, monitoring and evaluation
To reach and sustain the goal of eliminating TB in Europe it is fundamental that countries develop strategic TB control plans tailored to their own epidemiological situation. The ECDC Framework Action Plan to fight tuberculosis in the European Union and its follow-up provides areas for strategy development, including monitoring and evaluation, which can serve as a basis for a country’s plan [28, 129]. Outcome assessment should be supported by robust and quality-assured surveillance and laboratory systems, and linked to molecular epidemiology where possible [28,129]. Systematic cohort reviews are of great value to improve the quality of data for every TB case and are key to the evaluation of TB control programmes by identifying problematic issues and gaps in case management [7,98].
Strategy, monitoring and evaluation of TB programmes and big cities
In countries where there is an identified problem with TB accumulating in vulnerable groups in big cities, the TB control strategy should be adapted to target those specific challenges and needs. Evaluation of big city TB programmes, internal and external, should be performed regularly in order to identify gaps in services and be based upon ECDC-proposed indicators to monitor progress towards elimination , such as notification rates (including sputum smear positive TB), paediatric TB, diagnostic delay, treatment adherence rates, treatment outcome, cost-effectiveness and social support [5,17,99]. High-risk deprived communities as well as civil society can be engaged in such a process. DNA fingerprinting can monitor trends and evaluate interventions, most specifically in urban areas [16,19,125].
Big city TB control programmes should:
9.1. implement a continuous process of programme evaluation that will inform strategy development and include independent external peer review;
9.2. perform review of case detection and cohort review of case management and treatment outcome. Reviews should include analysis by urban risk group [98, 140];
9.3. collaborate to evaluate targeted interventions in big cities, such as molecular epidemiology, to establish additional benefits in TB control .
In low-incidence EU countries TB is increasingly concentrated in big cities. There is an urgent need for the systematic implementation of effective, cost-effective, evidence-based and innovative approaches and tools to improve early case finding, case holding and treatment completion in metropolitan areas, especially among vulnerable groups . The working group for TB control in big cities and urban risk groups in the EU has formulated 32 recommendations for big city TB control in nine areas of possible interventions. These recommendations resulted from a consensus process, and were prepared as precisely as possible but owing to the consensus approach, some were formulated as considerations. This was necessary because the epidemiological background of TB may differ between big EU cities, some interventions may not be available in all countries and cities, and there are limitations to what the working group can instruct EU Member States to do. Some of the recommendations are not strictly specific to big cities, because there is some overlap between urban TB control and general principles, and therefore the working group agreed not to mention certain issues, such as nosocomial IC, in the recommendations, when it was considered to be a general principle. Overall, this consensus statement demonstrates that at present the level of evidence for these recommendations to achieve control of TB in EU cities and among urban risk groups is limited and should be improved. Exchange of experience, collaborative research, advocacy and cooperation between different urban TB programmes in the EU will be instrumental to achieving TB control.
Conflict of interest
The first draft of the manuscript was written by RvH, GdV, RA and IA. All authors contributed to revisions and intellectual content of the paper and have seen and agreed the final version of the manuscript.
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