Palatal perforation in a patient with borderline lepromatous leprosy: leprosy still not eradicated

Leprosy was eliminated globally in 2000, but it continues to be endemic in developing countries like India, Brazil and Indonesia, with a prevalence of 0.57/10 000 persons in India (2020). At the end of the year 2020, the prevalence was 129 389, and oral manifestation of the leprosy is luncommon. We hereby report a case of a female patient in her late 30s who presented with palatal perforation. Following a thorough history taking and full body clinical examination, we arrived at a diagnosis of leprosy, and prompt treatment was initiated. Knowledge of cases like this becomes important as the oral lesion is said to form an essential source of leprosy dissemination in the community, and awareness about them becomes crucial, demanding immediate attention.

Household costs of leprosy reactions (ENL) in rural India

Background

Erythema nodosum leprosum (ENL) is a common immune-mediated complication of lepromatous (LL) and borderline lepromatous (BL) leprosy. Most patients experience chronic or multiple acute ENL over many years during an economically active period of their lives. Understanding the economic burden of ENL is essential to provide effective patient support, yet this area has not been investigated.

Methods

Ninety-one patients with LL or BL leprosy attending a leprosy hospital in Purulia district of West Bengal, India, were interviewed using a structured questionnaire. Cases (n = 53) were identified as those who had one or more episodes of ENL within the last 3 years. Controls (n = 38) had LL or BL leprosy but no history of ENL. Data were collected on household income, direct and indirect costs, and coping strategies.

Findings

The total household cost was Rs 1543 per month or 27.9% (IQR 13.2-52.6) of monthly household income for cases, and Rs 237 per month or 4.9% (IQR 1.7-13.4) of monthly household income for controls. Indirect costs accounted for 65% of total household costs for cases. Direct costs accounted for the remaining 35% of household costs, and resulted almost entirely from treatment-seeking in the private sector. Total household costs exceeded 40% of household income for 37.7% of cases (n = 20) and 2.6% of controls (n = 1) [1 USD = 59 INR].

Interpretation

Households affected by ENL face significant economic burden and are at risk of being pushed further into poverty. Health policy should acknowledge the importance of private sector provision and the significant contribution to total household costs of lost productivity (indirect cost). Further work is needed to explore this area and identify solutions.

Erythema nodosum leprosum (ENL) is a common complication of leprosy and an important cause of nerve damage and disability. In most cases, ENL causes chronic or recurrent episodes of ill-health over many years. In this study, we show that having a family member affected by ENL places considerable financial burden on households in rural India. Household costs resulted predominantly from the impact of ENL on the productivity (ability to earn money) of household members. Out of pocket expenditure on treatment-seeking in the private sector accounted for the remaining costs. Leprosy affects poor and marginalised communities in low- and middle-income countries across the world; households affected by ENL are at risk of being pushed further into poverty. The findings of this study support the need to better understand ENL and develop improved strategies for the prevention and management of ENL.

In vitro and skin lesion cytokine profile in Brazilian patients with borderline tuberculoid and borderline lepromatous leprosy

OBJECTIVE

We investigated the in vitro and skin lesions production of cytokines in non-treated borderline tuberculoid (BT) and borderline lepromatous (BL) patients.

PATIENTS AND METHODS

Seven untreated, non-reactional BT patients and 12 untreated, non-reactional BL patients were studied. Levels of the cytokines IFN-gamma, IL-10, TGF-beta1 and TNF-alpha were measured in supernantant of peripheral blood mononuclear cells (PBMC) cultures, stimulated with specific M. leprae antigen (sonicated and whole). The cytokines iNOS, IL-10 and TGF-beta1 were detected by immunohistochemistry in skin biopsies.

RESULTS

BT patients produced higher levels of IFN-gamma than BL patients; iNOS expression in skin lesions was also higher in BT patients. TGF-beta1 was detected in more cells in BL patients; IL-10 expression was similar in both groups. There was a negative correlation between iNOS and TGF-beta1 expression in skin biopsies, positive correlation between TGF-beta1 in skin lesions and bacillary index, as well as positive correlation between iNOS detected in skin biopsies and PBMC IFN-gamma production.

CONCLUSIONS

The BT patients had a mainly a Th1-profile of cytokines in their skin lesions and BL patients had a Th2 profile.

Genetic diversity of mycobacterium leprae isolates from Brazilian leprosy patients

INTRODUCTION

Leprosy is a chronic disease caused by infection with Mycobacterium leprae, an obligate intracellular parasite. A problem in studying the transmission of leprosy is the small amount of variation in bacterial genomic DNA. The discovery of variable number of tandem repeats (VNTRs) allowed the detection of strain variation in areas with a high prevalence of leprosy. Four genotypes of M. leprae based on three single-nucleotide polymorphism (SNPs) were also discovered to be useful for analysis of the global spread of leprosy.

METHODS

In this present study, we examined the allelic diversity of M. leprae at 16 select VNTR and three SNP loci using 89 clinical isolates obtained from patients mainly from the neighbouring states of São Paulo and Rio de Janeiro Brazil.

RESULTS AND CONCLUSION

By use of a PCR-RFLP-based procedure that allows the recognition of SNP types 3 and 4 without the need for the more expensive DNA sequencing steps, characterisation of the main M. leprae genotypes was easy. When applied on the study population, it was found that the SNP type 3 is most frequent in these two states of Brazil, and that VNTRs provided further discrimination of the isolates. Two Short Tandem Repeats (STRs) were monomorphic, with the remaining 14 STRs represented by two to 18 alleles. Epidemiological associations with township or state were not evident in this random collection and require further investigations. In phylogenetic trees, branches formed by all 16 STRs clearly separated SNP type 3 organisms from the other types while the allelic patterns of two minisatellite loci 27-5 and 12-5 were highly correlated with SNP type 3. This strain typing study provide the basis for comparison of M. leprae strain types within Brazil and with those from other countries, and informed selection of genomic markers and methods for future studies.

Occurrence and management of leprosy reaction in China in 2005

BACKGROUND

Leprosy reactions are a major cause of disability before, during and after anti-bacterial treatment. Prompt diagnosis and correct management of reaction is a crucial matter for improving the quality of leprosy health services.

OBJECTIVES

To describe the pattern of leprosy reaction and its management in China during 2005.

METHODS

A retrospective survey using a questionnaire was carried out in all the provinces of China at the beginning of 2006. Patients included were those presenting with leprosy reaction between 1 January and 31 December 2005.

RESULTS

452 questionnaires from 25 provinces were analysed. There were 313 male and 139 female patients who had 159 Type I reactions, 273 Type II reactions and 20 Type I and II mixed reaction. 72.4% of reactions occurred in the first year of MDT and 27.6% of patients during the second year of MDT. The highest frequency of reaction was during the first 6 months of MDT; 57.3% of patients developed new nerve impairment during and after MDT.

CONCLUSIONS

New nerve function impairment and disability still occurs among patients during and after MDT. The early detection and management of leprosy reaction remains important.

Clinical course of erythema nodosum leprosum: an 11-year cohort study in Hyderabad, India

Erythema nodosum leprosum (ENL) or type 2 lepra reactions complicate lepromatous leprosy and borderline lepromatous leprosy. We report an 11-year retrospective case record analysis of 481 outpatients with borderline lepromatous and lepromatous leprosy at the Dhoolpet Leprosy Research Center in Hyderabad, India.. The overall prevalence of ENL was 24%, 49.4% among cases of lepromatous leprosy (LL) and 9% among cases of borderline lepromatous (BL) leprosy. Logistic regression analysis identified LL (odds ratio [OR] = 8.4, 95% confidence interval [CI] = 4.6-15.4, P < 0.001) and BL with a bacterial index > or = 4+ (OR = 5.2, 95% CI = 2.1-12.9, P = 0.001) as major risk factors. The average patient with ENL was male, 34.7 years of age, and had multiple episodes of ENL (mean = 3.1) over an 18.5-month period. Three types of ENL were identified: single acute ENL, multiple acute ENL (repeated discrete episodes), and chronic ENL (continuous episodes). Acute single ENL is rare, accounting for only 8% of cases. Chronic ENL accounted for 62.5% of the cohort. Chronic ENL was of longer duration and more severe. An age > or = 35 years was a risk factor for developing chronic ENL. Patients with chronic ENL were more compliant with multi-drug therapy, especially during the first six doses of multi-drug therapy. Distinguishing these different types of ENL would be useful for patient management and developing improved treatment of these debilitating reactions. Improved strategies for treatment and management of these reactions need to be developed.

The relapse rate in MB leprosy patients treated with 2-years of WHO-MDT is not low

A group of multibacillary patients is clearly at high risk for relapse following 2-yr WHO-MDT. Relapse is largely confined to BL or LL patients with a high BI initially, and occurs long after the discontinuation of therapy. This important group of patients at risk for treatment failure presents several important issues: the need to identify those at risk and the operational requirements needed for their long term follow-up. Also, this group of patients might well benefit from an alternative antimicrobial regimen from the outset, as well as upon relapse.

Increased incidence of cytoplasmic ANCA (cANCA) and other autoantibodies in leprosy patients from western India

The prevalence of various autoantibodies was studied in 75 leprosy patients comprising eight patients with lepromatous leprosy (LL), 36 patients with borderline lepromatous leprosy (BL) and 31 patients with borderline tuberculoid leprosy (BT), along with 100 normal controls. Certain autoantibodies such as anti-nuclear antibodies (ANA), anti-single stranded DNA (anti-ssDNA) and anti-neutrophil cytoplasmic antibodies (ANCA) were raised among leprosy patients. When ANCA specificities to anti-myeloperoxidase (anti-MPO), anti-proteinase3 (anti-PR3) and anti-lactoferrin (anti-LF) were studied, it was found that the patterns of immunofluorescence such as perinuclear (p-ANCA), cytoplasmic (c-ANCA) and atypical (X-ANCA) and specificity by ELISA to anti-MPO, anti-PR3 and anti-LF varied in the LL, BL and BT groups. However, a higher amount of c-ANCA was observed in 62.5% of leprosy cases, while the incidences of p-ANCA and X-ANCA were lower. The LL group showed a higher incidence of autoantibodies as compared with the BL and BT groups, along with a male preponderance for autoantibody development. Some unusual antibody profiles such as 'X'-ANCA were also observed. The study suggests that autoantibody formation could be quite prevalent and also variable in the spectrum of leprosy cases, and there seems to be a serological overlap among leprosy and autoimmune disease, which could have pathogenetic importance in the leprosy patients developing complications.

Analysis of 6000 Skin Biopsies of the National Leprosy Control Program in Mexico

Six thousand skin biopsy specimens taken from April 1978 to January 2002 under conditions as specified by the National Leprosy Control Program (NLCP), were analyzed to obtain information about the work of the program and contribute to the knowledge of this illness in the Mexico. Six-thousand request forms for histologic exam of the NLCP were reviewed. Sixty-two percent of the requests had all the required information and in 38% one or more data items were omitted. The age range was 2 to 98 yrs with a median of 50 yrs; a small number of cases was observed in the age group of 0 to 14 yrs, and the peak was in the age group of 41 to 50 yrs. Of the 6000 biopsies, 3693 were classified. Polar lepromatous (LL) was the most common form of the disease, in 60.3% of cases. Twice as many cases were multibacillary leprosy (MB) as paucibacillary (PB). MB predominated in males, and PB predominated in females. The Cohen's kappa index (kappa) of clinical-histological agreement was 0.202 (95% CI 0.184-0.219) and showed a poor grade of agreement between clinical and histologic diagnosis, with a level of significance of 0.05 (p <0.001). The results may indicate the end of leprosy in Mexico, a country in which the national goal of elimination was reached in 1994, with a prevalence since the year 2000 of 0.17/10 000.

Ocular complications in newly diagnosed borderline lepromatous and lepromatous leprosy patients: baseline profile of the Indian cohort

AIM

To describe ocular manifestations in newly diagnosed borderline lepromatous (BL) and lepromatous leprosy (LL) patients in India.

METHODS

Ocular complications, at enrolment, occurring in all new borderline lepromatous and lepromatous leprosy patients detected by active case finding within the geographically defined leprosy endemic area of the Gudiyattam Taluk in India from 1991 to 1997 who consented to ocular examinations every 6 months, during and 5 years after treatment with multidrug therapy (MDT), were studied.

RESULTS

Orbicularis oculi weakness (4.62%), lagophthalmos (4.20%), ectropion (0.42%), trichiasis (0.84%), blocked nasolacrimal ducts (1.68%), pterygium (11.34%), impaired corneal sensation (53%), corneal opacity (10.5%), corneal nerve beading (1.68%), punctate keratitis (1.26%), keratic precipitates (4.62%), iris atrophy (1.68%), and cataract (12.6%) were ocular complications seen in the 301 lepromatous patients at enrolment. 4.6% had blind eyes. Increasing age was associated with ocular complications. 80% of patients were skin smear acid fast bacilli (AFB) positive. The LL/BL ratio was 1:6.4. 71% had some limb deformity. 44% had only leprosy related ocular complications (LROC), 28% had only general ocular complications (GOC) while 14% had both LROC and GOC. Ocular complications were significantly related to leg deformities. Corneal nerve beading was seen most in LL patients (100%) having high bacterial content. Lagophthalmos and muscle weakness were associated with reversal reactions.

CONCLUSIONS

Corneal nerve beading occurs in LL patients with high bacillary count. Patients with reversal reaction are more likely to present with orbicularis oculi weakness and lagophthalmos. Leprosy related ocular complications and general ocular complications are significant problems in newly diagnosed lepromatous patients. Elderly, deformed, skin smear positive, lepromatous patients are associated with increased ocular morbidity and form a group that require acceptable and accessible eye care.

Incidence of leprosy in school-children and their family members in Berhampur

A school survey, followed by a contact survey, was carried out in Berhampur, a city in southern Orissa. In a study of 8,870 school-children, leprosy was detected in 15, giving a prevalence rate of 16.91 per 10,000 with a male:female ratio of 8:7. Of these, 14 (93.99%) had paucibacillary leprosy. More cases [11 (73.33%)] were seen in the age-group of 10-15 years. Exposed parts, such as lower limbs, upper limbs and head and neck in that order, were the sites of predilection, accounting for 85.71% of total lesions. Nerve involvement was found in 2 (13.33%) girls with deformity (ulnar claw) in one of them (6.66%). BCG scar was present in 11 (73.33%) cases. Among the vaccinated cases, tuberculoid type was the most common, followed by indeterminate, pure neuritic and borderline, in that order. A contact survey detected 2 multibacillary cases in two families (13.33%). In each case, the father was the index source. The study revealed that a maximum number of students, 8 (53.3%), belonged to the middle socioeconomic class. Of the 15 affected, 60% were undernourished and the rest well nourished. No other systemic disease was found clinically associated with leprosy.

Progression of acral bone resorption in multibacillary leprosy

Although leprosy became a curable disease after implementation of the Global Strategy for the Elimination of Leprosy (WHO), mutilations and deformities are still commonplace in endemic countries. Hence, it remains important to evaluate the prevalence rate and the risk factors of acral bone resorption in the multidrug therapy (MDT) era. A cohort of 105 newly-diagnosed adult multibacillary leprosy patients admitted for treatment between 1990-1992 was surveyed until 1999. Progression of bone resorption (BR) in cured leprosy patients was observed up to 8 years after release from MDT. Twenty three percent of the patients were found to have acral resorption. BR was found to be associated with male sex, grade of disability at diagnosis with other deformities and with the occurrence of four or more lepra reactions. Patient surveillance after release from MDT continues to be a necessary procedure in individuals with disabilities and recurrent or persistent reactions.

Thyroid functional status in leprosy patients in Sudan

We studied 45 adult patients with untreated lepromatous leprosy and borderline leprosy, presenting at clinics in Khartoum and Omdurman, to assess clinical and biochemical effects of the disease on thyroid function. A matching control group of 30 subjects, without symptoms or signs of thyroid disease, were included for comparison. Thyroxine, triiodothyronine and thyrotrophin levels were within normal range. Mean serum thyroxine was low in both groups (significant in lepromatous leprosy patients only). Mean serum triiodothyronine was high in both groups (significant in neither group). Mean thyrotrophin was significantly higher in both groups compared with controls.

Ophthalmic findings of newly diagnosed leprosy patients in Istanbul Leprosy Hospital, Turkey

The objective of this study was to detect ocular lesions of newly diagnosed leprosy cases admitted to Istanbul Leprosy Hospital. The patients were categorized according to sex, age, type of leprosy and duration of the disease. Their eyes were categorized as with or without ocular findings due to leprosy. The total number of patients was 21. The mean age was 22+/-4.6 years, the duration of the disease was 36.3+/-19.6 months. Madarosis was the most common finding in this group. It was found in 15 patients (71.4%, 95% confidence interval (CI) 47.8-88.7%). As a second common finding related to corneal alterations, 13 patients had nerve thickening (61.9%, 95% CI 38.4-81.8%). None of our patients had trichiasis, episcleritis, scleritis, cataract, iris atrophy, iris pearl, abnormal vitreous or retinal findings.

Associations between HLA-DRB1 alleles and leprosy in an Indonesian population

To investigate whether the susceptibility to leprosy (type), subclinical infection with Mycobacterium leprae and the antibody response against M. leprae-specific antigens are associated with HLA-DR phenotypes sequence-specific oligonucleotide HLA-DRB1 and DQA1 typing and antibody assays have been performed in 79 leprosy patients (41 TT/BT and 38 LL/BL) and 50 healthy controls from a Javanese population in Yogyakarta, Indonesia. DRB1*02 was associated with LL/BL [odds ratio (OR) 2.54, 95% confidence interval (CI) 0.97-9.78, p = 0.037 and attributable risk (AR) 41.5%] but not with TT/BT leprosy (p > 0.05). HLA-DRB1*12 was negatively associated with leprosy (either LL/BL or TT/BT [OR 0.33-0.35, p < 0.05, prevented fraction (PF) 58.8%-65.3%]. No significant association was found between HLA-DRB1 or DQA1 type, anti-M. leprae antibody level and subclinical infection with M. leprae. These data indicate that in this population susceptibility to lepromatous leprosy is associated with HLA-DRB1*02, while resistance to leprosy is associated with HLA-DRB1*12. These associations are not paralleled with associations of the same HLA types with anti-M. leprae antibody level. Finally, the results of this study also support the notion that infection with M. leprae per se is not associated with HLA-DRB1 or DQA1 alleles.

Leprosy among inmates of a prison

A leprosy survey carried out in a district prison revealed a gross prevalence of 20 cases per 1000, and active prevalence of 10 cases per 1000 whereas, prevalence of leprosy in the state was 1.12 per 1000. Such prisons thus form hyperendemic pockets. The inmates are a closed community and there is a risk of cases among inmates spreading infection to others inside the prison during their sojourn there and to the community when they are released from the prison. Special efforts are required to identify and eliminate all identifiable sources of infection, especially at this point of time when we are aiming at elimination of leprosy as a public health problem.

Current profile of active leprosy in Greece; a five-year retrospective study (1988-1992)

The epidemiological characteristics of newly diagnosed, active leprosy cases (incidence, N = 16 Greeks and 4 expatriates) and relapsed cases (recurrences, N = 25, all Greeks) were studied. Most of the cases were multibacillary, over 50% being lepromatous. The relapses were analyzed by sex, disease duration and residence (rural or urban). Most of the newly diagnosed cases presented with nonreactional skin lesions (70%). The relapses were self-reported and detected mainly because of type 2 leprosy reactions (56%). The main source of the infection for new cases was members of their former extended family. The statistical trend of leprosy in Greece is a continuing decline in a country which already has a very low endemicity.

Epidemiologic characteristics of leprosy reactions

An 8-year prospective study of a cohort of 176 newly diagnosed leprosy patients was conducted to examine the possible influence of age, sex, multidrug therapy (MDT), and duration of illness on the risk of either type 1 or type 2 reactions. Patients were enrolled over a 5-year period (1984-1989) and followed for a minimum of 3 years. All reactions studied were severe enough to warrant hospital admission. Overall, 45% of this cohort developed a reaction; 32% of patients considered at risk developed type 1 reactions, and 37% of patients considered at risk developed type 2 reactions. Despite the predominance of men among the leprosy patients, type 1 reactions occurred with significantly greater frequency in women, and did not appear to be influenced by age of onset of leprosy. Individuals experiencing one type 1 reaction were not likely to experience a recurrence, suggesting that the immunologic mechanisms of this reaction may be limited or regulated by genetic or immunologic factors. Type 2 reactions, on the other hand, occurred with equal frequency in both males and females, but were highly associated with onset of leprosy in the second decade of life. Individuals who experienced type 2 reactions often had one or more recurrence of the reaction. No increased risk was seen for either reaction with longer duration of leprosy or longer duration of treatment. The mechanisms by which these differences relate to the pathogenesis of leprosy reactions remains unclear, but future studies of clinical and immunological parameters of leprosy reactions may benefit from stratification of data by gender and age of onset of leprosy in addition to the routine grouping of results by leprosy classification.

[Leprosy in The Netherlands in the period 1970-1991]

OBJECTIVE

To inventory the changes in leprosy epidemiology in the Netherlands.

DESIGN

Retrospective.

SETTING

Academic Medical Centre (Amsterdam) and University Hospital Dijkzigt (Rotterdam), the Netherlands.

METHOD

The medical records of all new leprosy patients in the period 1970-1991 were analysed.

RESULTS

Between 1970 and 1991, 622 new leprosy patients were registered; 371 men (59.6%) and 251 women (40.4%). Most patients came from Surinam (73.3%) and Indonesia (7.2%). The mean time lapse between onset and treatment in the Netherlands was 10.1 years. Switching from monotherapy to combination therapy (1979) had no effect on the incidence of reversal reactions (cellular hypersensitivity in immunologically unstable patients), but did affect the incidence of erythema nodosum leprosum during the treatment.

CONCLUSION

Leprosy in the Netherlands is an important disease, mainly from Surinam. The main advantage of combination therapy is the shortened duration of treatment. The treatment of choice is the one recommended by the WHO, the combination therapy with rifampicin administration once a month, because of the few adverse effects.

[Changes and present status of a Japanese National Leprosarium--analysis of smear positive rate and relapse in Hoshizuka-Keiaien between 1972-1991]

Change of clinical features of leprosy in a Japanese National Leprosarium Hoshizuka-Keiaien during 20 years (1972-91) was studied by analyzing clinical records. (1) Skin slit smear positive rate among lepromatous and borderline cases once increased from 16.3% (1972) to 28.8% (1981) and then declined to 3% (1991). (2) Relapse was 4.25 cases per annum among 817 patients (0.52% per annum). Relapse of lepromatous leprosy (0.42% per annum) is decreasing, and borderline or neuritic relapse (0.12% per annum) of previously lepromatous cases is the major feature in recent years. (3) In lepromatous relapse cases, it took 3.5 years in average to become smear negative again, but this duration is shortening in recently relapsed cases. (4) Number of erythema nodosum leprosum is remarkably decreased, but iridocyclitis is still observed. (5) 85% of inpatients in 1991 are classified as clinical cure (Japanese criteria 1989). By the advance of chemotherapy and aging of the inpatients (average age: 68 years), geriatric diseases, instead of leprosy, are becoming major problems in Japanese National Leprosaria.

Treatment of paucibacillary leprosy

BACKGROUND

When multidrug therapy was introduced a decade ago to shorten the duration of treatment, paucibacillary leprosy was advocated 6 months of treatment. The diagnosis is based mainly on clinical and histopathologic examination, negative slit-skin smear examination, and positive lepromin test.

METHODS

The case records of 508 paucibacillary leprosy patients attending our urban leprosy center have been analyzed with reference to regularity of therapy, response to multidrug regimen, follow-up, and relapse.

RESULTS

The incidence of paucibacillary leprosy was found to be 37%. Defaulter rate was 45%. Nine percent of the cases attended the center with deformities emphasizing the need for corrective surgery and early case detection to prevent them.

CONCLUSIONS

The main problem that we faced was the optimum duration of treatment, which is as yet an unsettled question. The opinions of other workers have been given, and a slight modification in current WHO regimen has been suggested without significantly affecting the cost of therapy.

Association between leprosy and hepatitis B infection. A survey in Goiânia, central Brazil

This investigation presents the results of hepatitis B virus screening among leprosy patients conducted in central Brazil as a preliminary information for a HBV vaccination programme. The main objectives were to assess the seroprevalence of HBV serum markers among lepromatous patients and to analyse institutionalization as risk factor for HBV infection in this population. Two groups of lepromatous patients were studied, 83 outpatients and 171 institutionalized ones. Screening for HBV serum markers included the detection of HBsAg, anti-HBc by radioimmune assay (RIA). The prevalence of carrier state (HBsAg) was 4.8% and 8.8% among outpatients and institutionalized, respectively, (p > 0.05). Seroprevalence of exposure (all markers) was statistically significant different between outpatients (16.9%) and institutionalized ones (50.3%). Institutionalized patients had an almost four fold risk of HBV infection when compared to the outpatients, and the highest risks were among patients with more than 21 years of residence in the colony, after adjusting for age and sex.

Duration of multidrug therapy in paucibacillary leprosy patients; experience in the leprosy control program of the All Africa Leprosy and Rehabilitation Training Center (ALERT) in Ethiopia

Multidrug therapy (MDT), according to the recommendations of a WHO Study Group of 1982, was introduced in the leprosy control program of the All Africa Leprosy and Rehabilitation Training Center (ALERT), Ethiopia, in January 1983. Of 6042 paucibacillary patients who were put on MDT during a period of 7 years, 5485 patients (90.8%) completed the course of MDT; 437 patients (7.2%) did not fulfill the requirement for clinic attendance and either discontinued MDT themselves or the treatment was discontinued by the service. The remaining 120 patients (2.0%) either died, were transferred, left the control area or continued MDT after 9 months. The urine spot test for the presence of dapsone showed a significantly higher proportion of positive results for patients on MDT than for patients on dapsone. The analysis of the compliance with the prescribed doses of MDT showed that of 963 patients, 81.9% received six doses of MDT and 18.1%, more than six doses; 82.6% of these 963 patients attended with 100% regularity, 12.7%, 3.6%, and 1.1% missed one, two, or three clinic appointments, respectively, while fulfilling the requirement for overall clinic attendance. Of the 429 patients who had not been treated with dapsone before MDT, the skin lesions were clinically active at the time of stopping MDT in 130 patients (30.3%). In all, except one of the 114 patients (0.9%) who attended for follow-up examinations, the skin lesions had become clinically inactive within 2 years after stopping MDT. The recommended duration of MDT is discussed based on findings in the ALERT leprosy control programs and observations by others.

[Leprosy--still a possibility in Denmark]

A case of borderline tuberculoid leprosy in a 27 year old woman from the Philippines is presented. The diagnosis was made after repeated biopsies. Only a single mycobacterium was present and the histology of the initial biopsies was inconclusive. This case emphasizes that leprosy is still imported to Denmark, and that the diagnosis is often difficult and delayed for years.

Coronary heart disease risk factors in Hansen's disease sufferers

In the frame of an epidemiologic study of Hansen's disease (HD) sufferers, several risk factors have been investigated which might explain the high prevalence of coronary heart disease (CHD) among HD patients. The data analyzed in the present study are derived from 293 HD patients (157 men and 136 women). The patients, after having completed a WHO adopted questionnaire, were given a complete physical examination, a resting and an exercise electrocardiogram, and biochemical as well as hematological examinations. Coronary HD patients, when compared to noncoronary HD patients, showed statistically significant differences in the following parameters: (1) mean age, (2) mean concentration of the electrophoretic fraction of alpha-lipoproteins, (3) deviation from mean weight, (4) prevalence of hypertension, and (5) prevalence of the borderline lepromatous form of HD. However, the differences found when comparing other parameters, such as blood pressure, smoking, diabetes mellitus, total cholesterol, triglycerides, pre-beta and beta-lipoproteins, uric acid, erythrocyte sedimentation rate, ABO blood groups, etc., did not reach the level of significance. These findings suggest that HD sufferers are a special population subgroup with reference to CHD risk factors, differing in many ways from the general population.

Effect of BCG on the risk of leprosy in an endemic area: a case control study

The effect of BCG on the risk of leprosy was measured using a case-control design in an area endemic for the disease. In this study, 397 newly diagnosed cases and 669 controls matched for age, sex and locality were selected from a defined population. Information on exposure to BCG, contact with another case of leprosy, and relevant socioeconomic variables were obtained from the subjects. Having infectious (multibacillary) and noninfectious (paucibacillary) contacts in the household increased the risk of disease 11.7 times (p less than 0.001) and 2.7 times (p less than 0.001), respectively. Overall, the protection offered by BCG was not significant (odds ratio = 0.8; p = 0.17). However, BCG appeared to increase the risk for indeterminate leprosy (adjusted odds ratio = 2.7; p = 0.09) while protecting against borderline disease (adjusted odds ratio = 0.39; p = 0.03). It is possible that BCG causes a shift in the overall cell-mediated immune response, thus increasing the risk for milder and transient forms of leprosy while protecting against more serious forms. These findings may have important implications for the design and interpretation of vaccine trials. Namely, trials should be designed to measure the protective efficacy of vaccines against the more serious forms of leprosy, which have the greatest public health significance.

Childhood leprosy in northern India

During a period of eight years, 132 new leprosy cases were detected in children ages 3 to 19 years. Borderline tuberculoid leprosy was present in 59%, tuberculoid in 7.6%, and indeterminate type in 3.8% patients. Single skin lesions were seen in a significant number (43.9%) of patients. Bacillus-positive disease was detected more often (17.4%) than in adults. A high frequency (66.6%) of nerve involvement was also detected. Deformities were uncommon. Males were more often affected than females, especially in the ages 10 to 14 and 15 to 19 years. A history of contact was available in only 19.7% patients, and the contact was intrafamilial in 84.6%.

Leprosy in children: correlation of clinical, histopathological, bacteriological and immunological parameters

The study of leprosy in children has indicated an incidence of 10% amongst leprosy patients attending the clinic. The duration of the disease was usually less than 2 years. The expression of leprosy in this group was either a macule and/or a plaque. Classification was, therefore, different and conforms to indeterminate (I), borderline tuberculoid (BT) and borderline (BB) leprosy. Only occasionally were other clinical variants seen. The bacteriology was largely unproductive by slit-skin smears. The lepromin (Mitsuda) responses were positive in BT and unpredictable in BB patients. Epicutaneous responses to sensitization with dinitrochlorobenzene (DNCB) paralleled responses to lepromin. Microscopic pathology was of very little help. The correlation of these parameters was only 50-60% indicating that the diagnosis of leprosy should primarily be based on clinical features.

Leprosy survey in industries in Bombay

Population surveys for leprosy in industrial cities like Bombay revealed that about 60% of adult subjects especially males could be examined. The fact that the prevalence rate of leprosy particularly multibacillary type is much higher in this segment of population as compared to other groups indicates the importance of examining this population at their workspot like industries. 22287 industrial workers were examined for leprosy by paramedical auxiliaries in their establishments and 270 leprosy cases were detected (P.R. 12/1000). However, only 13 multibacillary cases (P.R. 0.5/1000) could be unearthed. 12 patients were with grade II and above. 184 (83%) were untreated. 161 (60%) patients reported for treatment. With available resources, case holding of patients who are not within the control area of the project becomes a challenging job for paramedical workers though large number of leprosy cases are detected amongst industrial workers. If industrial management arranges treatment for leprosy patients without dislocating them from their service, the pool of infection in the urban community will be reduced and can contribute tremendously towards urban leprosy control programme.

Leprosy in low endemic areas of India: an appraisal and suggested measures for control

Prevalence of leprosy in the low endemic areas of India is described based on the observations of patients attending an Urban Leprosy Centre in the Union Territory of Delhi from the neighbouring states. The rising incidence in these so-called low to moderate endemic places is closely linked to factors related to urbanisation, movement of people in search of employment, etc., which necessitate fresh surveys in these areas. A significant number of leprosy patients attending the Centre were irregular (37.7%) in therapy and many absconded after the initial visit (35.3%), the reasons for which are discussed. These figures are compared to that from similar low endemic areas and known high endemic parts of the country. Suitable modifications to the control programme in these areas are suggested under the purview of the National Leprosy Eradication Programme.

[Descriptive study of patients with leprosy in the province of Cordoba]

A descriptive study of virtually all patients with leprosy in the Córdoba province was carried out. The socioeconomic and hygienic features of the patients' homes, some clinical variables, the therapeutic habits and the features of the foci were evaluated. The major findings were as follows: More than 50% of patients had poor socioeconomic background. 32% were a clinically active stage of the disease, 42% had some degree of disability and one half of the patients did not usually comply with the treatment. The importance of the socioeconomic and hygienic background as a possible risk factor for the development and the worsening of the disease are apparent. What we have defined as a contagion-favoring environment is associated with poor hygienic status of the patient's home (p = 0.001). The lack of compliance with treatment is associated with poorer social and hygienic status (p less than 0.001).

[An increase in Hansen's disease in northeastern Brazil]

The epidemiological aspects of hanseniasis in Recife from 1960 to 1985 were studied. Clinical-epidemiological records of 3,923 leprosy patients reported to the Secretaria de Saúde do Estado de Pernambuco were reviewed. The cruce as well as the age, sex and type-specific detection rates were calculated. The way the cases were detected and the time elapsed between the appearance of the first symptoms and the disease was analysed. The analysis of the time trend during the observation period showed an increase in the detection rate with time, rising from 5.5 per 100,000 inhabitants in 1960 to 36.1 per 100,000 inhabitants in 1985. The higher frequency of the tuberculoid type of leprosy and the high percentage of patients under 15 might refleet the expansion of the disease in Recife. The decline and the stabilization in the time elapsed between the appearance of the disease and its detection, from 1979 onwards, indicates a more prompt detection and, as a consequence of that, that the rate of detection is approaching the incidence rate. From 1970 to 1985 the most common means of detecting cases of Hanseniasis was through dermatological consultation followed by disease notification. Only 14.2% of the cases were discovered through the surveillance of contacts. The analysis of the epidemiological and operational indicators suggest that the increase in the detection rate over the period from 1960 to 1985 was due both to expansion of the disease and improvement in control measures. The prevalence rate of Hanseniasis in Recife in December 1984 was 2.04 per 100,000 inhabitants; according to the WHO criteria Recife may be considered an area of high endemicity.

Changing picture of leprosy in North Arcot District, Tamil Nadu after M.D.T

This paper discussed the effect in a 5 year period (1983-88) of MDT on the Leprosy situation in North Arcot District where MDT was started in 1983. The cases at the start of MDT were 68351 and 29511 cases were detected in the year period and the total case load was 97862. Out of this total case load 84810 cases were deleted by RFC, deaths or PL*. The causes for deletions are discussed in detail. The remaining case load at the end of the 5 year period is 13052 or 13.35% of the cases at start. The M.D.T. has definitely played a part in the drastic reduction of the case load since the major number of cases have been deleted as RFC due to cure of the disease and so the future planning of leprosy work when the case load becomes very low is also discussed.

An immunohistochemical and morphological study of amyloidosis complicating leprosy in Malaysian patients

Congo red screening of tissue blocks from 37 consecutive autopsies on leprosy patients revealed 7 cases of systemic amyloidosis, indicating a prevalence rate of 19%. 5 were males and 2 females. All were ethnic Chinese. Their ages ranged from 52 to 85 years with a mean of 69 years. Six had lepromatous leprosy while the remaining 1 had tuberculoid leprosy. In all 7 cases, the amyloid was AA in type, being permanganate-sensitive and immunoreactive with anti-human AA protein antiserum. Hepatic deposition was limited to blood vessels, a pattern typical of AA (secondary) amyloidosis. With regard to renal involvement, 4 showed a predominantly vascular pattern of infiltration while 3 exhibited the more ominous glomerular pattern. Three died of chronic renal failure and 2 of congestive cardiac failure attributable to renal and cardiac amyloidosis respectively. One patient succumbed to septicaemia and the remaining 1 to acute myocardial infarction. AA amyloidosis remains a serious and significant complication of leprosy among Malaysians.

[Temporal tendency in the detection of Hansen's disease in the municipality of Maringá-PR, 1977/1986]

This study was dedicated to the analysis the behaviour of the Hansen's, disease in Maringá, State of Paraná. Three hundred and forty eight clinical-epidemic cards were studied in patients who had Hansen's disease in the periods from 1977 to 1986. It was verified that the clinical forms Virchowian + Borderline had the highest percentual and prevailed in the age limit where people are economically active, concluding the same of a previous study which was performed by Belda & Lombardi and by Asseis et al. Tables and Figuras of the disease distribution are presented according to sex, origins, year of the detection, clinical form, age when it was diagnosed (the disease), time when symptoms appeared until the diagnosis with short comments, and its importance to the epidemic valuation of Hansen's disease in this city.