A basic review of Sarcopenia Diagnosis

@#Associated with aging, sarcopenia is characterized by a decline in skeletal muscle mass, muscle strength and physical performance, eventually resulting in reduced physical capability, disability, poor quality of life, mortality in older people and high health care expenditure. The prevalence varies significantly by population characteristics, disease status, diagnostic criteria and measurement tools. It is essential to achieve an accurate diagnosis of sarcopenia for the management plan to be effective. This review briefly discusses the essential steps in diagnosing sarcopenia: Find – Assess – Confirm - Severity.

Comprehensive Approach to Tuberculosis Case Detection: Experience from an Urban Slum, Mumbai, Maharashtra, India

Background: Passive case finding leaves a number of tuberculosis (TB) cases unidentified which leads to increased transmission, morbidity, and mortality. Different approaches for case detection are needed to meet the End TB Strategy targets. Materials and methods: Between August 2014 and March 2016, a non-governmental organization (NGO) screened the population in two high burden areas of Mumbai through door-to-door survey, involving private practitioners, engaging community and contact surveys to identify cases early and initiate treatment for TB through a comprehensive approach to active case finding (ACF) in a community. A retrospective analysis of the data collected from this intervention was done. Results: Of 6230 symptomatic (3% of population), 3836 (61.5%) undertook tests, 652 (17%) were diagnosed with TB, and 591 (90.6%) were started on treatment. Through door-to-door survey, private practitioners, contact examination, and community engagement, 59%, 26%, 6.4%, and 8.6% cases were identified. Of these, 64% were females and 29% were of extra-pulmonary TB. Of 581 cases, 444 (76.4%) were successfully treated; 14 (2.4%) died; 7 (1.2%) failed treatment; 46 (7.9%) were drug-resistant TB; 33 (5.6%) lost to follow-up; and 37 (6.1%) were transferred out. Numbers needed to screen are 365, 11, and 20 of community, symptomatic, and household contacts, respectively. Conclusion: A comprehensive approach to active case finding identifies cases early, is feasible, and could be an effective complementary TB case detection strategy.

Application of mobile phone technology as intervention for the management of tuberculosis patients diagnosed through community survey

Background & objectives: The delay in communicating the results to tuberculosis (TB) patients leads to increased rates of initial loss to follow up of treatment. The gap in communication among healthcare providers requires application of new tools that will address the challenges. Mobile phone technologies could be a useful tool in this context for the delivery of information. The objective was thus to evaluate communication by mobile applications such as the WhatsApp Messenger to decrease initial loss to follow up after initial treatment for TB. Methods: Indian Council of Medical Research-National Institute for Research in Tuberculosis, Chennai, India undertook a community prevalence survey to find the burden of TB. During this survey, mobile phone-based technology (WhatsApp messenger) was employed as an intervention among the healthcare providers and researchers involved for communicating. This was further evaluated for its usefulness by examining the initial loss to follow up and patients initiated on treatment. Results: The study covered four blocks of Thiruvallur district of Tamil Nadu, South India, namely Kadambathur, Poondi, Thiruvalangadu and Periyapalayam. The survey population was around 20,000 from each block, and the average patients diagnosed by community TB prevalence survey were 30 patients from each block. Among the patients diagnosed through this survey, in the first block, only 55 per cent were initiated on treatment; subsequently, with the intervention, the initial loss to follow up was significantly reduced from 45 to zero per cent. Interpretation & conclusions: After integrating of WhatsApp messenger application for communication among healthcare providers and research

Implementing active surveillance for tuberculosis: The experiences of healthcare workers at four sites in two provinces in South Africa

The high burden of tuberculosis (TB) in South Africa (SA) is associated with uncontrolled transmission in communities and delayed diagnosis of active cases. Active surveillance for TB is provided by community-based services (CBS). Research is required to understand key factors influencing TB screening services in the CBS. This study explored the implementation of active surveillance for TB where community-oriented primary care (COPC) had been successfully implemented to identify these factors.Methods: This was a qualitative study of four established COPC sites across two provinces in SA where active surveillance for TB is implemented. Semi-structured interviews were conducted with purposively selected healthcare workers in the CBS and citizens in these communities. The recorded interviews were transcribed for data analysis using ATLAS.tisoftware.Results: The factors influencing active surveillance for TB were directly related to the major players in the delivery of CBS. These factors interacted in a complex network influencing implementation of active surveillance for TB. Building effective relationships across stakeholder platforms by community health workers (CHWs) was directly influenced by the training, capacity building afforded these CHWs by the district health services; and acceptability of CBS. Each factor interplayed with others to influence active surveillance for TB.Conclusion: Community health workers were central to the success of active surveillance for TB. The complex interactions of the social determinants of health and TB transmission in communities required CHWs to develop trusting relationships that responded to these issues that have impact on TB disease and linked clients to healthcare.Keywords: tuberculosis; active case finding; community-oriented primary care; community health worker (CHW); community-based services; active surveillance.

Tuberculosis case finding and case holding practices in selected Drug Abuse Treatment and Rehabilitation Centers (DATRCS) in Luzon, Philippines

@#<p style="text-align: justify;"><strong>Background and Objectives:</strong> Tuberculosis (TB) remains a public health problem in the Philippines despite trends indicating a decline in the burden of disease. Persons who use drugs who are confined in government-retained drug abuse treatment and rehabilitation centers (DATRCs) face an increased risk for TB because of the congestion in the facility coupled with the absence of guidelines on TB management specific to DATRCs. Thus, this study was conducted to document the current case finding and case holding practices as well as TB treatment pathway in six (6) Luzon-based, government-retained DATRCs.</p><p style="text-align: justify;"><strong>Methods:</strong> Key informant interviews were conducted with DATRC personnel involved in TB diagnosis and management in six selected DATRCs in Luzon, Philippines. Interviews were transcribed and coded for thematic analysis. We compared the DATRC practices with the provisions of the 2014 National TB Control Program (NTP) Manual of Procedures. Results were validated through a workshop with (a) a group of physicians and rehabilitation practitioners assigned in other DATRCs; and (b) a group of experts who have experience in managing or overseeing DATRCs in the country.</p><p style="text-align: justify;"><strong>Results:</strong> Two physicians and four nurses participated in the interviews. Variations in case finding and case holding practices in six DATRCs have been found. National guidelines exist for congregate settings but are more specific to jails/prisons, which are administratively and operationally different from DATRCs.</p><p style="text-align: justify;"><strong>Conclusion:</strong> Development of special guidelines for TB case finding and case holding in DATRCs as well as staff training on the latest NTP Manual of Procedures are recommended. However, gaps and inequities posed by the current set-up underscore the need to address health system-wide factors affecting the practice and performance of these facilities.</p><p style="text-align: justify;"><strong>Key Words:</strong> tuberculosis, case finding, case holding, drug abuse treatment and rehabilitation centers, Philippines</p>

Screening tool for restrictive and obstructive ventilatory abnormalities in a population-based survey

Abstract Background: A 6 s spirometry with an inexpensive pocket spirometer efficiently selects individuals for a diagnostic-quality spirometry for airflow limitation, but could also be useful to identify individuals with a restrictive pattern. Objectives: We evaluated an inexpensive simplified spirometer (chronic obstructive pulmonary disease [COPD]-6) as a screening tool to identify spirometric abnormalities. Methods: A population-based survey in Mexico City, with 742 participants performing pre- and post-BD spirometry and a three-maneuver 6 s spirometry (pre-BD) with a COPD-6. We evaluated forced expiratory volume in 1 s (FEV1), FEV6, and FEV1/FEV6 from the COPD-6, crude and expressed as the percentage of predicted (%P), to discriminate post-bronchodilator airflow obstruction (FEV1/forced vital capacity [FVC] <5th percentile) or restriction (FVC or FEV1 <5th percentile with normal FEV1/FVC) through receiver operating characteristics and their area under the curve (AUC). Results: FEV1%P was the best predictor to identify pre- and post-BD ventilatory abnormalities (best cutoff point 87%P, AUC 92% for restrictive pattern, 89% for obstructive pattern, and 91% for any spirometric abnormality). Deriving to clinical spirometry only those with <87%P (26% of the sample) missed only 12% of spirometric abnormalities most of the latter mild. Conclusions: An FEV1 <87%P from a pre-BD 6 s spirometry correctly identified individuals with spirometric ventilatory defects, either obstructive or restrictive.

Selective case finding versus universal screening for detecting hypothyroidism in the first trimester of pregnancy: a comparative evaluation of a group of pregnant women from Rio de Janeiro

ABSTRACT Objective Maternal hypothyroidism during pregnancy may lead to adverse outcomes. Recently published guidelines by the American Thyroid Association (ATA) do not advocate for universal screening but recommend a case-finding approach in high-risk pregnant women. The present study aims to evaluate the accuracy of this approach in identifying women with thyroid dysfunction during early pregnancy. Subjects and methods This is a multiple-center, cross-sectional study. Three hundred and one pregnant women were enrolled. Anamnesis and a physical examination were performed to detect which women fulfilled the criteria to undergo laboratory screening of thyroid dysfunction, according to the ATA's 2017 guidelines. The Zulewski's validated clinical score was applied to assess signs and symptoms of hypothyroidism. Serum levels of thyrotropin (TSH), free thyroxine (FT4), anti-thyroperoxidase (TPO-Ab), and anti-thyroglobulin (Tg-Ab) antibodies were determined. Results Two hundred and thirty one women (78%) were classified as high risk, and 65 (22%) were classified as low risk for thyroid dysfunction. Regarding the clinical score, 75 patients (31.2%) presented mild symptoms that were compatible with SCH, of which 22 (7.4%) had symptoms as the only risk factor for thyroid disease. 17 patients (5.7%) had SCH, of which 10 (58.8%) belonged to the high-risk group, and 7 (41.2%) belonged to the low-risk group. OH was found in 4 patients (1.4%): 3 (75%) in the high-risk group and 1 (25%) in the low-risk group. Conclusions The ATA's proposed screening criteria were not accurate in the diagnosis of thyroid dysfunction in pregnancy. Testing only the high-risk pregnant women would miss approximately 40% of all hypothyroid patients.

Risk of infection and disease progression in children exposed to tuberculosis at home, Colombia / Riesgo de infección y progresión de la enfermedad en niños expuestos a tuberculosis en el hogar, Colombia

Abstract Aim: To assess the risk of tuberculosis (infection and disease) in children less than 15 years' old who are household contacts of pulmonary tuberculosis patients in three Colombian cities (Medellín, Cali, and Popayán). Methods: A cohort of 1,040 children household contacts of 380 adults with smear-positive pulmonary tuberculosis was followed up for 24 months. Study period 2005-2009. Results: Tuberculin skin test was positive (≥10 mm) in 43.7% (95% CI: 39.2-48.2). Tuberculin skin test positivity was associated with age 10-14 years (Prevalence Ratio -PR= 1.43, 95% CI: 1.1-1.9), having a BCG vaccine scar (PR= 1.52, 95% CI: 1.1-2.1), underweight, closer proximity to the index case and exposure time >3 months. The annual risk of infection (tuberculin skin test induration increase of 6 mm or more per year) was 17% (95% CI: 11.8-22.2) and was associated with a bacillary load of the adult index case (Relative Risk -RR= 2.12, 95% CI: 1.0-4.3). The incidence rate of active tuberculosis was 12.4 cases per 1,000 persons-year. Children <5 years without BCG vaccine scar had a greater risk of developing active disease (Hazard Ratio -HR= 6.00, 95% CI: 1.3-28.3) than those with scar (HR= 1.33, 95% CI: 0.5-3.4). The risk of developing active tuberculosis augmented along with the increase from initial tuberculin skin test (tuberculin skin test 5-9 mm HR= 8.55, 95% CI: 2.5-29.2; tuberculin skin test ≥10 mm HR= 8.16, 95% CI: 2.0-32.9). Conclusions: There is a need for prompt interruption of adult-to-children tuberculosis transmission within households. Conducting proper contact investigation and offering chemoprophylaxis to infected children could reduce tuberculosis transmission.

Resumen Objetivo: Evaluar el riesgo de tuberculosis (infección y enfermedad) en niños menores de 15 años de edad convivientes de pacientes con tuberculosis pulmonar en tres ciudades colombianas (Medellín, Cali y Popayán). Métodos: Se siguió durante 24 meses una cohorte de 1,040 niños convivientes de 380 adultos con tuberculosis pulmonar bacilífera. Periodo de estudio 2005-2009. Resultados: La prueba de tuberculina fue positiva (≥10 mm) en el 43.7% (IC 95%: 39.2-48.2), y estuvo asociada con la edad de 10-14 años (Razón de Prevalencia-RP= 1.43, IC 95%: 1.1-1.9), tener cicatriz de la vacuna BCG (RP= 1.52, IC 95%: 1.1-2.1). El riesgo anual de infección (aumento de la induración en la prueba de tuberculina de 6 mm o más al año) fue 17% (IC 95%: 11.8-22.2), y estuvo asociado con mayor carga bacilar en el adulto con tuberculosis pulmonar (Riesgo Relativo-RR= 2.12, IC 95%: 1.0-4.3). La tasa de incidencia de tuberculosis activa fue de 12.4 casos por 1,000 años-persona de seguimiento. Los niños menores de 5 años sin cicatriz de vacuna BCG tuvieron un mayor riesgo de desarrollar tuberculosis activa (Razón de Peligro -HR= 6.00, IC 95%: 1.3-28.3), que quienes tenían cicatriz (HR= 1.33, IC 95%: 0.5-3.4). El riesgo de desarrollar tuberculosis activa aumentó conforme el aumento de la prueba de tuberculina inicial (prueba de tuberculina 5-9 mm HR= 8.55, IC 95%: 2.5-29.2; prueba de tuberculina ≥10 mm HR= 8.16, IC 95%: 2.0-32.9). Conclusión: Es necesario interrumpir rápidamente la transmisión de tuberculosis de adultos a niños en los hogares. Realizar investigaciones de contacto apropiadas y ofrecer quimioprofilaxis a los niños infectados podría reducir la transmisión de la tuberculosis.

Active detection of tuberculosis: tackling the problem head on in the remote area of Andaman and Nicobar Islands

Background: Community based active case finding for tuberculosis (TB) is an essential step in the fight forward for eliminating TB. One of the steps in targeting TB intervention is early diagnosis and treatment of patients by reducing the reservoir of infection in the community. Active case finding (ACF) targeting the entire population by house to house survey was done in Nicobar district of these islands.Methods: A community-based, cross-sectional, descriptive study was conducted with the trained mobile teams from 17.07.2017 to 31.07.2017 in the Nicobar District. The algorithm of the case detection included screening patients by symptoms, then by sputum microscopy for confirmation. X-ray was done in patients who were symptomatic but sputum negative. If both smear and chest X-ray results were negative but still symptomatic, then cartridge-based nucleic acid amplification test (CBNAAT) was done.Results: A total population of 18526 was mapped of which 14784 (79.8) could be screened. A total of 209 people were identified by the mobile teams with symptoms who were examined by sputum microscopy. Among them 7 cases were identified to be sputum smear positive, 2 X-ray positive and 2 were diagnosed by CBNAAT.Conclusions: This study shows that the active case finding method is feasible and acceptable by the community. The results obtained are encouraging for the implementation of ACF through mobile team activity in all these islands in order to meet the target of WHO’s End TB Strategy.

Controversies and limitations in the diagnosis of chronic obstructive pulmonary disease

Abstract Chronic obstructive pulmonary disease (COPD) is a major cause of chronic morbidity and mortality worldwide. While the cut-off point to define airflow obstruction has been controversial, it is widely accepted that the spirometry test is vital, as well as performing it after using a bronchodilator. The 6-second spirometry and the forced expiratory volume in 1 second/forced expiratory volume in 6 seconds (FEV1/FEV6) have demonstrated validity for defining obstruction, and it would be advisable to incorporate them in the definitions of obstruction. Another relevant issue is that spirometry with borderline obstruction can vary over time, changing to above or below the cut-off point. Thus, surveillance should be considered over time, repeating the spirometry to have a greater certainty in the diagnosis. The objective of this article was to conduct an in-depth review of the controversies in the diagnosis of COPD. During the past years, COPD definition has been updated in different times; however, it is now considered more as a complex syndrome with systemic participation, requiring a multidimensional assessment, and not only a spirometry.

Epidemiology of tuberculosis in Papua New Guinea: analysis of case notification and treatment-outcome data, 2008–2016

@#Papua New Guinea has strengthened its surveillance system for tuberculosis (TB) under the National TB Program. This paper provides an overview of TB surveillance data at the national and subnational levels from 2008 to 2016. TB case notification has consistently increased since 2008 with 6184 cases (93 per 100 000 population) in 2008 to 28 598 (359 per 100 000 population) in 2014 and has stabilized since 2014 with 28 244 cases (333 per 100 000 population) in 2016. The population-screening rate for TB rose from 0.1% in 2008 to 0.4% in 2016. Notified cases were dominated by extra-pulmonary TB (EP-TB, 42.4% of all cases in 2016). The proportion of pulmonary TB cases with no sputum test results was high with a national average of 26.6%. The regional variation of case notifications was significant: the Southern Region had the highest number and rate of notified TB cases. Of the nationally reported cases, 26.7% occurred in children. Treatment success rates remained low at 73% for bacteriologically confirmed TB and 64% for all forms of TB in 2016, far below the global target of 90%. For all forms of TB, 19% of patients were lost to follow-up from treatment. An analysis of TB data from the national surveillance system has highlighted critical areas for improvement. A low population-screening rate, a high proportion of pulmonary TB cases without sputum test results and a low treatment success rate suggest areas for improvement in the National TB Program. Our additional subnational analysis helps identify geographical and programmatic areas that need strengthening and should be further promoted to guide the programme’s direction in Papua New Guinea.

Optimal control application to an Ebola model

Ebola virus is a severe, frequently fatal illness, with a case fatality rate up to 90%. The outbreak of the disease has been acknowledged by World Health Organization as Public Health Emergency of International Concern. The threat of Ebola in West Africa is still a major setback to the socioeconomic development. Optimal control theory is applied to a system of ordinary differential equations which is modeling Ebola infection through three different routes including contact between humans and a dead body. In an attempt to reduce infection in susceptible population, a preventive control is put in the form of education and campaign and two treatment controls are applied to infected and late-stage infected (super) human population. The Pontryagins maximum principle is employed to characterize optimality control, which is then solved numerically. It is observed that time optimal control is existed in the model. The activation of each control showed a positive reduction of infection. The overall effect of activation of all the controls simultaneously reduced the effort required for the reduction of the infection quickly. The obtained results present a good framework for planning and designing cost-effective strategies for good interventions in dealing with Ebola disease. It is established that in order to reduce Ebola threat all the three controls must be taken into consideration concurrently.

Serial Clinical Screening for Active Tuberculosis among HIV-infected Kenyan Adults.

Setting: Urban, non-governmental HIV outpatient clinic in Mombasa, Kenya. Objective: To report outcomes and assess feasibility of serial clinical screening for active TB among adults enrolled in outpatient HIV care in a resource-limited setting. Design: Longitudinal analysis of screening conducted during routine clinic visits of HIVinfected Kenyan adults. The provider-initiated screen included TB symptom assessment and targeted physical exam. Participants with >1 symptom/sign were to submit sputum for microscopy and undergo chest radiography. Results: Over 33 months, 4,854 HIV-infected outpatients were serially screened for active TB at a median interval of 3 months. Treatment for active TB was started in 127 (2.6%). Of those 127, 77 (60.6%) were diagnosed based on first screen, and 50 (39.4%) were diagnosed thereafter. Among those 50 diagnosed upon subsequent screens, 28 (56%) were identified in association with positive screens, suggesting that 22% (28 of 127) of TB diagnoses could be attributed to the serial screening protocol. Conclusion: Provider-initiated serial clinical screening during routine visits of HIV-infected outpatients continued to prompt treatment of active TB beyond initial screening. Serial screening strategies may lead to earlier TB treatment in patients receiving ongoing HIV care in resource-limited settings.

El difícil camino del control sanitario de la tuberculosis / The difficult road to achieve sanitary tuberculosis control

Tuberculosis continues to be a worldwide prevalent disease. Chile has established a tuberculosis control program since the earliest 70s which contributed to decrease the annual incidence of tuberculosis by 50 percent every decade, reaching the rate of 20 per 100.000 inhabitants the year 2000 ("early phase of tuberculosis elimination as a public health problem "). Unfortunately since this time the descent rate is becoming slower and between years 2009-2011 has achieved a stationary rate of13 x 100.000. This deterioration in the epidemiological situation of tuberculosis in Chile runs in parallel with the successive reductions in the budget assignedfor its control. A higher incidence of tuberculosis in high risk groups (HIVpopulation, migrants, prisoners and elderly people) were not responsible for this epidemiologic deterioration. Lack of diagnosis in smear positive pulmonary tuberculosis patients is the most important source ofpersistent community infection. Only 25 percent of the estimated goal of sputum smear screening among medical consultations in primary care was achieved. Between the years 20062010 193.416 less sputum smear examinations were done. This means that nearly 966 smear positive tuberculosis patients were no identified as we know that about 0.5 percent smears are positive in this setting. A shortage of funds for tuberculosis in our country could increase its incidence as it was shown in Brazil, Cuba and Uruguay and would demand larger resources to strengthen the tuberculosis program. This epidemiological scene is worse in the Metropolitan Region where 40 percent of the country population concentrated 60 percent of the incidence of tuberculosis the year 2011. In this area we found counties with the highest rates. There is the need to strengthen the tuberculosis program in these areas and to organize teams in the primary care settings in order to increase case finding through the performance of sputum smears in symptomatic adult patients.

La tuberculosis (TB) sigue siendo una patología prevalente a nivel mundial. Chile tiene un Programa de Control de la Tuberculosis eficaz desde el año 1973, el que ha permitido disminuir la incidencia anual de la enfermedad en 50 por ciento cada década, hasta alcanzar el año 2000 una tasa de 20 x 100.000 habitantes ("umbral de la etapa de eliminación "). Sin embargo, desde entonces el país ha presentado un descenso menor, llegando a una situación estacionaria, con tasas cercanas a 13 x 100.000 los años 2009-2011. Este deterioro en la situación epidemiológica de la tuberculosis en Chile corre paralelo a las sucesivas reducciones del presupuesto asignado a su control. La mayor incidencia de tuberculosis en pacientes VIH, población migrante, población privada de libertad y adultos mayores han demostrado no ser los responsables de este retroceso epidemiológico. La mayor causa de este deterioro se debe a la pérdida de la capacidad diagnóstica de los casos transmisores de la enfermedad en la comunidad (casos pulmonares bacilíferos), reflejado por el bajo índice de pesquisa (número de baciloscopias realizadas por cada 1.000 consultas de morbilidad general de adultos en la atención primaria), que es 12,8 x 1.000 a nivel nacional, en circunstancias que la meta es 50 x 1,000. Esto ha determinado la reducción de 193.416 baciloscopias de pesquisa entre los años 2006-2010, lo que sin duda mantiene en circulación un número estimado de 966pacientes contagiosos no diagnosticados en este período de 4 años. Esto hace temer que en Chile se pudiera producir próximamente un nuevo aumento de la tuberculosis, es decir, una reversión epidemiológica, como la que se observó en Brasil, Cuba y Uruguay cuando se redujeron los recursos destinados a sus programas antituberculosos. El control de este rebrote, en esos países, requirió de la inyección de ingentes recursos económicos. Este deterioro epidemiológico es más intenso en la Región Metropolitana, que en 2011 concentraba en el 40 por...

Study on the factors influencing steady transmission of leprosy in Qiubei county, China WENG / 中华流行病学杂志

Objective To explore the factors influencing the steady transmission of leprosy as indicated by new case detection rate in Qiubei county, Yunnan province, China despite the implementation of MDT for the last 25 years. Methods Information related to case-finding was collected. ELISA and PCR were applied to detect anti-PGL-1 antibody in sera and Mycobacterium leprae in nasal secretions respectively, in leprosy patients, their household contacts and the general population. M. leprae by PCR was also detected from water in the highly endemic villages. VNTR typing was performed to explore the mode and chain of transmission of M. leprae. Results Prior to 2001, the proportion of new cases detected from the examination of household contacts of leprosy patients was low (number, compared to), while the proportion of patients whose identification was delayed by more than 2 years, was high (number, compared to). Qualities of these two indicators has been improved, along with the improvement of leprosy control program since 2001, but the detection rates has been steady at 4-5/ 100 000 during 1986-2010. The PGL-1 seropositivity rate was 20%-30% in general population, with the peak rate (30%) detected in the teenage population in the endemic villages. In addition to the fact that M. leprae was detected in nasal secretion from patients, their contacts and from water, the M. leprae VNTR genotypes were found to be highly similar between skin biopsy and nasal secretion in untreated cases. Families with multi-cases were clustered and located in the Northern part of the County, and the genotypes of M. leprae were identical within those families. The percentage of clusters was considerably higher in Northern rather than Southern parts of the County. Conclusion Results from this molecular study demonstrated evidence that transmission of leprosy within the families and in the endemic-villages was severe. M. leprae were detected in waters from the endemic villages and others areas which might have a relation to the continued transmission of leprosy.

Historical comparisons on related features among newly registered leprosy patients in the endemic areas of Wenshan district, Yunnan province / 中华流行病学杂志

Objective To analyze the current situation and prevalence of leprosy in Wenshan district, Yunnan province. Methods To collect various data on leprosy reported by the health workers at the county level. Results The number of newly registered patients did not decrease significantly in 1989, 1999 and 2009, respectively. The mean age of patients at detection was 33-35 years old. Time of delay between the disease onset and being diagnosed was shortened from 35.2 months in 1989 to 15.9 months in 2009. However, the proportion of patients with more than 12 months of delay still accounted for nearly 50%. The proportion of Grade II disability fluctuated between 15.2%-17.7% and the proportion of child cases increased from 8.1% in 1989 to 13.1% in 2009. Clinics for skin diseases were the main locations for case detection. The proportion of new cases detected through 'active case finding' program accounted for 44.3% in 1999 and 42.6% in 2009, both higher than 17.7% in 1989. Conclusion The situation of leprosy in Wenshan district, Yunnan province, was still serious and the reason for the occurrence of new cases was related to the fact that the infectious source of leprosy had not been under full control.

Prevalence of patients with respiratory symptoms through active case finding and diagnosis of pulmonary tuberculosis among prisoners and related predictors in a jail in the city of Carapicuíba, Brazil / Prevalência de sintomáticos respiratórios através da busca ativa, diagnóstico de tuberculose pulmonar entre pessoas privadas de liberdade e fatores associados em uma cadeia pública no município de Carapicuíba, Brasil

BACKGROUND: Prisons offer a fertile setting for the transmission of tuberculosis due to the presence of many classic risk factors for both infection and disease: overcrowding, poor ventilation, and little sunlight. Prisoners are often malnourished and have poor hygiene and are more likely to have a background of alcohol and drug abuse. OBJECTIVES: To determine the prevalence of prisoners with respiratory symptoms and pulmonary tuberculosis (PTB) through active case finding in a prisoner population of the county jail of Carapicuíba, and to study possible related variables. METHODS: This was a cross-sectional study, and respiratory symptomatic individuals (RSI) were detected through active case finding. Socio-demographic data were collected from inmates' judicial history using a specific questionnaire. The RSI provided sputum specimens for detection of acid fast bacilli and culture for mycobacterium identification. RESULTS: Among the 397 prisoners studied, 154 reported respiratory symptoms for more than three weeks, and were considered RSI; the variables associated with RSI were: having already been tried and incarcerated for more than six months and seven were diagnosed as PTB (1,763 cases/ 100,000 inhabitants). CONCLUSIONS: The prevalence of RSI and PTB cases were respectively 39 and 35 times greater than the general population.

INTRODUÇÃO: Estabelecimentos prisionais são um campo favorável para a transmissão de tuberculose (TB), devido a presença de vários fatores de risco clássicos, tanto para a infecção como para a doença: aglomeração, falta de ventilação e de iluminação, como também o fato de os detentos receberem uma nutrição deficitária e os locais possuí-rem condições de higiene precárias; uma grande proporção dos detentos apresentam história pregressa de alcoolismo e uso de drogas ilícitas nas dependências desses estabelecimentos. OBJETIVOS: Determinar a prevalência de sintomáticos respiratórios (RSI) e casos de tuberculose pulmonar (TBP) através da busca ativa em população privada de liberdade na cadeia pública do município de Carapicuíba e estudar os prováveis fatores associados. MÉTODO: O desenho de estudo foi do tipo corte transversal, realizou-se a busca ativa de RSI e os dados sociodemográficos foram coletados em questionários específicos a partir dos processos judiciais dos participantes. Os RSI foram submetidos ao exame de baciloscopia e cultura para micobactérias do escarro. RESULTADOS: Dos 397 detentos estudados, 154 relataram tosse por mais de três semanas, considerados RSI. Os fatores associados à presença de sintomas respiratórios foram estar preso há mais de seis meses e ter sido julgado. Foram diagnosticados 7 casos de tuberculose pulmonar, 1.763 casos por 100.000 detentos. CONCLUSÕES: A prevalência de RSI e casos de TBP foram 39 e 35 vezes superior ao encontrado na população em geral respectivamente.

Analysis of the TB Control Program with the Indicators for Improving TB Case Finding:A Case from Yemen / 国際保健医療

<b><big>Introduction</big></b><br>As for the available healthcare services, there is a big gap not only between developed and developing countries but also those are not equally available even in a single country. In order to cope with geographical gaps of healthcare services in the Republic of Yemen, the improvement of accessibility to healthcare services is placed as priority of the 5-year plan of health development. However, analysis of health information in developing countries may not be easy because of the weak health statistics mechanism. The data from national TB control program may be considered as a possible way to analyze the geographical gaps and improve the tuberculosis case finding in developing countries.<br><b><big>Methods</big></b><br>The case detection rate of new smear positive tuberculosis patients in districts was calculated by using data from the latest population census in the Republic of Yemen. The calculated case detection rate was statistically analyzed with the factors such as availability of microscopy centre, population and the distance from provincial capital.<br><b><big>Results</big></b><br>The case detection rate of new smear positive tuberculosis patient is significantly different in the districts that have microscopy centre or more than 42,322 populations. The availability of the microscopy centre may be considered as the significant factor for achieving better case finding of new smear positive tuberculosis patients in the districts. Population of the districts where new smear positive tuberculosis patients found has been calculated as 74.1% of the total population. This calculation almost matches the target of the population that may be covered by the public health services according to the 5-year health development plan of the Ministry of Public Health.<br><b><big>Conclusions</big></b><br>The statistically analyzed data may provide a possible way to improve the national TB control program.

Japan's national tuberculosis control strategies with economic considerations

We made a bibliographic search for Japanese and non-Japanese literature on tuberculosis control programs to study the current public health policies for tuberculosis control in Japan especially in regard to cost-effectiveness. Then, we compared the Japanese, strategies for tuberculosis control with those in other countries including the United States, and those recommended by World Health Organization (WHO). The current trend of tuberculosis incidence in the Japanese community demonstrates major differences from the situation that had prompted installation of tuberculosis control measures several decades ago. The tuberculosis control measures should be targeted to the elderly people (over 65 years old) because of the following three aspects. (1) A continuing decline of tuberculosis in the young Japanese population, particularly children who might attain benefits from BCG immunization; (2) The enhancement of the prevalence among the elderly people who are not covered by a uniform national surveillance strategy; (3) Cost-ineffectiveness of Mass Miniature Radiography (MMR) being used as a means to screen for tuberculosis. The cost-effectiveness issue must be considered more seriously, and the WHO recommendations especially in regard with the DOTS (directly-observed treatment, short course) strategy need to be incorporated more effectively into the national program since the incidence of drug resistant tuberculosis in Japan has been recently increasing. Finally, we propose to limit BCG immunization further and to discontinue annual MMR in the young population, and instead to develop effective strategies of both active and passive case finding in the elderly through public and community health services.

Japan\rqs National Tuberculosis Control Strategies with Economic Considerations

We made a bibliographic search for Japanese and non-Japanese literature on tuberculosis control programs to study the current public health policies for tuberculosis control in Japan especially in regard to cost-effectiveness. Then, we compared the Japanese strategies for tuberculosis control with those in other countries including the United States, and those recommended by World Health Organization (WHO). The current trend of tuberculosis incidence in the Japanese community demonstrates major differences from the situation that had prompted installation of tuberculosis control measures several decades ago. The tuberculosis control measures should be targeted to the elderly people (over 65 years old) because of the following three aspects. (1) A continuing decline of tuberculosis in the young Japanese population, particularly children who might attain benefits from BCG immunization; (2) The enhancement of the prevalence among the elderly people who are not covered by a uniform national surveillance strategy; (3) Cost-ineffectiveness of Mass Miniature Radiography (MMR) being used as a means to screen for tuberculosis. The cost-effectiveness issue must be considered more seriously, and the WHO recommendations especially in regard with the DOTS (directly-observed treatment, short course) strategy need to be incorporated more effectively into the national program since the incidence of drug resistant tuberculosis in Japan has been recently increasing. Finally, we propose to limit BCG immunization further and to discontinue annual MMR in the young population, and instead to develop effective strategies of both active and passive case finding in the elderly through public and community health services.