Progress towards elimination of leprosy as a public health problem in India and role of modified leprosy elimination campaign

India (population 943 million) has seen a highly significant decrease in the prevalence of leprosy since the introduction of multi-drug therapy (MDT) in 1981. From a prevalence rate of 57/10,000 of the population in March 1981, the figure has declined to 5.2/10,000 in March 1999. This was possible due to the creation of a completely vertical (specialized) infrastructure for leprosy control in the 218 endemic districts of the country and skeleton vertical staff in the remaining districts, coupled with the recruitment of additional staff on contract basis to provide MDT through vertical staff in endemic districts and mobile treatment units in the moderate and low endemic districts. Despite all efforts, however, new case detection has not shown a decline over the last 14 years due to the presence of hidden (and undiagnosed) cases. Therefore, in order to intensify and hasten progress towards elimination (less than 1 case per 10,000 of the population) in the whole country, it was decided to implement a massive leprosy elimination campaign (LEC) in all the States/Union Territories (UTs). The reports of 22 States/UTs indicate that 415 out of the total of 490 districts in the country were covered by modified LEC (MLEC), with 85% coverage of the population. The campaign used in India was modified from the pattern previously described by the World Health Organization. The detection of hidden or suspected cases took place within a short, intensive period of 6-7 days and relied heavily on house-to-house searches by General Health Care staff trained in leprosy detection and confirmation was made by appropriately trained staff. This MLEC received widespread Government and public support, resulting in the detection of 454,290 hidden cases of leprosy, whilst providing training to a large number of General Health Care staff and volunteers and creating widespread awareness about leprosy and the availability of treatment free of charge for all cases. This programme proved to be one of the most successful health care interventions undertaken in India in recent years, particularly in the states of Bihar and Orissa. Although a few states in India are unlikely to reach the current WHO goal of elimination before end of the year 2000, the results of the MLEC strongly support the possibility that elimination levels will be achieved in the majority of states by the end of the year 2000 and at national level by the end of the year 2002.     

麻风病基本消灭阶段的流行病学特征

目的：分析麻风病基本消灭阶段流行病学特征,以指导麻风防治工作。方法：根据山东省历年的麻风病人登记表,分析比较麻风基本消灭阶段与防治初期的流行学特征。结果：麻风基本消灭阶段的流行病学特征与防治初期比较有显著变化;新病例呈散在分布;发病年龄显著升高;少年儿童发病显著减少;多菌型病例所占比升高。复发病例在新发病例中占比升高。结论：麻风病中、高流行区达到基本消灭麻风病后,应根据其流行病学特征采取相应防治对     

The leprosy elimination campaign in Jigawa,Nigeria: an opportunity for integration

Integration of leprosy control into the general health services is regarded as an important condition for increasing the accessibility and sustainability of leprosy services. However, it is often difficult to embark on such an integration process. In Jigawa State in Northern Nigeria, the leprosy elimination campaign was used as the initiator and catalyst for the integration process. In this article, this challenging process is described and analysed. Available information is used to identify the constraints that emerged and to assess the consequences of integration for important aspects of leprosy control, such as case detection and case-holding and the accessibility and quality of the provided services. Some lessons from this experience are drawn that can be helpful for integration in other States or countries.     

Treatment outcome and impact of leprosy elimination campaign in Sokoto and Zamfara states, Nigeria

A Leprosy Elimination Campaign (LEC) was implemented in 37 districts of Sokoto and Zamfara states, Nigeria from 13 August to 30 November 1998. The campaign utilized intensive community mobilization and training of local health personnel to detect hidden leprosy cases. During 8 weeks of case finding, 160,127 persons were screened; 353 new cases of leprosy were detected and placed on MDT; 236 (67%) of new cases detected were classified as MB, 64 cases (18%) suffered visible deformities and 24 patients (6.8%) were children. Follow-up in December 1999 of patients placed on MDT revealed 97% PB and 96% MB cure rates, respectively. Detection of cases in communities led some community leaders to ask for repeat surveys in their communities. Repeat surveys continue to yield new cases. The authors recommend that LECs be maintained for 3 years to accelerate leprosy elimination in the region. The cost effectiveness and impact of LEC in Sokoto-Zamfara are discussed.     

云南省麻风达标县新发现病例分析及面临形势

目的：分析云南省43个麻风病达标县（市）近5年新发现患者情况及目前面临的形势。方法：对43个县（市）1996－2000年新发现麻风疫情资料进行统计。结果：有36个达标县（市）新发现麻风患者235例，其中MB181、PB54例，男168例，女67例；Ⅱ级畸残77例（32．77％）；皮肤涂片阳性率为77．02％；主动发现75例（31．91％）、被动发现160例（68．09％）；病期在2年以内的144例（61．28％）；有9个县（市）患病率均起过0．01‰，其中4个月（市）近5年发病率均超过0．5／10万。结论：云南省麻风病达标县（市）疫情又出现反弹，目前面临的形势依然十分严峻，麻风防治工作任重而道远。     

The factors influencing the operational efficiency of leprosy case detection programme.

Under our National Leprosy Eradication Programme, Leprosy cases are being detected by para-medical workers by conducting population surveys. In order to detect the leprosy cases early, for their timely anti-leprosy treatment, it is necessary that the leprosy surveys are implemented and supervised efficiently. However, present experience indicates that the existing survey efficiency needs to be improved, for which it is necessary to analyse the factors which may interfere with the optimal survey efficiency of para-medical workers. An attempt has been made through present piece of work to identify such factors in relation to (i) the para-medical workers and survey facilities, (ii) the implementation and supervision of leprosy survey and (iii) the community involved in survey. These factors are discussed in detail to assist the NLEP Administrators in devising a suitable action plan to improve leprosy case detection efficiency.     

Evaluation of the modified leprosy elimination campaign in a high leprosy endemic district of Jharkhand

An evaluation of the third Modified Leprosy Eradication Campaign (MLEC) was carried out in Potka block in the high endemic district of East Singhbhum, Jharkhand State, India, by our external evaluation team, from 29 October to 8 November 2001. The searchers in this block detected 389 suspects during the MLEC; of these, 181 (46%) were examined, and 69 (38%) of them were confirmed as cases by the Programme staff. The evaluators examined 189 (48.5%) of the total 389 suspects detected by the searchers, including 31 of the 69 cases confirmed by the Programme staff. Concordance of diagnosis of leprosy cases by the Programme staff and the evaluators was found to be high (90%). However, concordance of the type of leprosy was found to be variable (PB 38%, MB 72%, SSL 100%). Specificity and sensitivity of diagnosis by the Programme staff (as against those by the evaluators) were found to be 85.7% and 79.2% respectively. There was no case of re-registration. The evaluators examined 108 of the suspects detected by the Search Team, but not screened by the Programme staff, and diagnosed 47 cases (44%; PB 20, MB 9, SSL 18) from among them. The evaluators also diagnosed additional 30 new cases (PB 18, MB 5, SSL 7), during their visit. An assessment of knowledge about the disease and treatment among confirmed cases revealed that most of the patients did not know correctly about their disease. All the cases were referred by the searchers. About 45% of cases were aware of the duration for which they needed to take the treatment, 97% of cases showed the blister calendar packs and had taken the supervised dose. Availability of MDT to the patients and drug compliance were found to be adequate. Assessment of the impact of IEC activities on the awareness of leprosy among the community showed that about 50% of those interviewed were aware of the campaign. Most of them had information about the availability of leprosy drugs and knew that treatment was free. A majority of those aware of the disease said that they would refer suspects, if they come across any, to PHC centres for treatment.     

Histoid leprosy: the impact of the entity on the postglobal leprosy elimination era

A fresh focus on histoid leprosy is the primary objective of this article, especially in the context of the postglobal leprosy elimination era. The emergence of the entity following dapsone monotherapy is well recognized, in addition to de novo cases. Irregular and inadequate therapies, coupled with resistance to dapsone and/or mutant organisms, are responsible. It was considered to be worthwhile to take stock of the condition through its history, nomenclature, epidemiology, clinical characteristics, diagnosis, and differential diagnosis. The bacteriologic and histopathologic features and immunologic profile are also described.     

Role of dermatologists in leprosy elimination and post-elimination era: the Brazilian contribution

Dermatologists in Brazil have always been involved in care of leprosy patients, and have been alternating with public health physicians in the management of control policies. It is worth mentioning that Fernando Terra, founder of the Brazilian Society of Dermatology (BSD) in 1912, established the position of intern dermatologist at the Hospital dos Lizaros, in Rio de Janeiro, in 1913 (Souza-Araújo, 1952; Oliveira, 1991). In 1920, the dermatologist Eduardo Rabello formulated the first national public policy on the control of leprosy in the country, which was called 'Inspection of Prophylaxis of Leprosy and Venereal Diseases'. His son was an enthusiast of dermatological research and his main legacy was the polarity concept of leprosy (Rabelo, 1937). However, from 1930 to 1985, the public health physicians were in charge of the political guidelines that represented the period of establishing the vertical programmatic structure, with compulsory isolation of patients (1933-1962). Moreover, the federal states coordinated the control actions, based on the leprosy prophylaxis campaign. The dermatologists resumed the conduction of the control process in 1986, when multi-drug therapy (MDT) was implemented in the country, and in 1991, when decentralization of public healthcare services to the municipal level took place. In 2003 again, the dermatologists were no longer in control of the national policy. However, active dermatologists have acted in Brazilian references on diagnosis and treatment of Hansen's disease, at municipal, state and national levels. It is true that dermatologists have been getting away from leprosy control actions. And one could ask: who will replace this specialist? In the 'post-elimination' era, when the public primary healthcare technicians no longer consider leprosy of much significance, the knowledge of the expert in this disease and its differential diagnoses will be crucial.     

Transepidermal elimination of Mycobacterium leprae in histoid leprosy: a case report suggesting possible participation of skin in leprosy transmission

An Indian patient of histoid leprosy presenting de novo, having numerous solid staining bacilli inside the intact epidermis and eliminating bacilli from the intact and the eroded epidermis, is reported. The diagnosis, suggested by the clinical features, was confirmed histopathologically. This unusual report indicates possible participation of skin in leprosy transmission.     

Role of dermatologists in leprosy elimination and post-elimination era

Would it not have been better to have left out the word 'elimination' altogether in the question and do what WHO has done in its new strategic plan for 2006-2010, 'Global Strategy for further reducing the Leprosy Burden and Sustaining Leprosy Control Activities'? Why not use a title such as 'The Role of Dermatologists in reducing the Leprosy Burden and Sustainig Leprosy Control Activities'? Some elements of the 'foundation' of the elimination policy have been (and are still) very controversial, its definition and the unsubstantiated (up till now) claim that when reaching a prevalence rate of less than 1 per 10,000, the transmission of the infection would be interrupted and the incidence would therefore decline.     

Histoid leprosy: review of the literature

Leprosy is a chronic granulomatous inflammation primarily of the peripheral nervous system, skin, and reticuloendothelial system caused by Mycobacterium leprae. It presents clinically as an erythematous or hypopigmented anesthetic patch and a thickened and/or tender cutaneous nerve trunk. Leprosy is also called Hansen disease. Leprosy is a great imitator of other skin diseases, and it can present with different morphological lesions, which is why an expert eye is needed to diagnose it. One of the important clinical presentations of leprosy is histoid leprosy, which is very difficult to diagnose due to different clinical and histopathological findings that mimic, e.g., a fibromatous disorder. Histoid leprosy is a very rare clinicopathological variant of leprosy. It is clinically characterized by skin‐colored, soft, succulent nodules, and plaques on apparently normal skin and histologically by a dense bundle of histiocytes arranged in storiform. Though histoid leprosy is a very rare type of leprosy, the higher load of lepra bacilli in these cases makes it a concern as a reservoir for leprosy.