Tuberculosis in indigenous children in the Brazilian Amazon

OBJECTIVE: Assess the epidemiological aspects of tuberculosis in Brazilian indigenous children and actions to control it. METHODS: An epidemiological study was performed with 356 children from 0 to 14 years of age in Rondônia State, Amazon, Brazil, during the period 1997-2006. Cases of TB reported to the Notifiable Diseases Surveillance System were divided into indigenous and non-indigenous categories and analyzed according to sex, age group, place of residence, clinical form, diagnostic tests and treatment outcome. A descriptive analysis of cases and hypothesis test (χ²) was carried out to verify if there were differences in the proportions of illness between the groups investigated. RESULTS: A total of 356 TB cases were identified (125 indigenous, 231 non-indigenous) of which 51.4% of the cases were in males. In the indigenous group, 60.8% of the cases presented in children aged 0-4 years old. The incidence mean was much higher among indigenous; in 2001, 1,047.9 cases/100,000 inhabitants were reported in children aged < 5 years. Pulmonary TB was reported in more than 80% of the cases, and in both groups over 70% of the cases were cured. Cultures and histopathological exams were performed on only 10% of the patients. There were 3 cases of TB/HIV co-infection in the non-indigenous group and none in the indigenous group. The case detection rate was classified as insufficient or fair in more than 80% of the indigenous population notifications, revealing that most of the diagnoses were performed based on chest x-ray. CONCLUSIONS: The approach used in this study proved useful in demonstrating inequalities in health between indigenous and non-indigenous populations and was superior to the conventional analyses performed by the surveillance services, drawing attention to the need to improve childhood TB diagnosis among the indigenous population.

Hypoacousis prevalence in Kaiowá and Guarani indigenous children

OBJETIVOS: identificar a prevalência de hipoacusia em crianças indígenas Kaiowá e Guarani. MÉTODOS: estudo transversal, com uma amostra de 126 crianças indígenas de zero a 59 meses da Terra Indígena de Caarapó, em Mato Grosso do Sul, Brasil. As crianças foram submetidas ao exame das emissões otoacústicas evocadas transitórias, que serviu como triagem auditiva. O reteste foi realizado nas crianças que apresentaram resultado alterado na triagem auditiva. Os casos que, no reteste, permaneceram alterados foram encaminhados para o exame da imitanciometria. RESULTADOS: na triagem auditiva, foram identificadas 25 (23,6%) crianças com resultado alterado; dessas, 17 apresentaram resultado normal no reteste e 6 permaneceram com resultado alterado, sendo encaminhadas para imitanciometria. A prevalência de hipoacusia identificada ao final do estudo foi de 5,6%, sendo 3 (2,8%) do tipo condutiva e 3 (2,8%) do tipo neurossensorial. Estas últimas foram encaminhadas à avaliação otorrinolaringológica complementar para confirmação diagnóstica. As alterações auditivas identificadas neste estudo não apresentaram diferenças significantes quanto ao sexo e grupo etário. CONCLUSÕES: a prevalência de alteração auditiva encontrada nesta população alerta para a necessidade de implantação de programas de saúde auditiva e sua articulação com outras ações desenvolvidas na atenção à saúde infantil dos Kaiowá e Guarani.

The Rights of Indigenous Children

While children in general are overrepresented among those living in poverty, a long history of discrimination and exclusion has ensured that indigenous children in Latin America and the Caribbean are in an even worse position. In the general population 63% of children aged under 18 years live in poverty, as measured by privation of the basic rights to well-being; however, that figure is as high as 88% among indigenous children in the same age group. This is a violation of these children's rights —including their rights to survival and development— and entails high costs for society in terms of productive capacity and social inclusion. That is the thrust of the argument in the central article of this issue of Challenges, which focuses on poverty among indigenous children. The data show a pattern of inequality that is highly detrimental to indigenous children: they make up a disproportionate number of those living in extreme poverty and are three times more likely to lack access to education, safe drinking water and housing than other children. It is a matter of particular concern that in the countries of the Andean Community 5 of every 10 indigenous children under the age of 5 years suffer from chronic malnutrition.This edition includes brief testimonies by indigenous children as to what their life is like; an interview with Marta Maurás, Vice-Chairperson of the United Nations Committee on the Rights of the Child, on the international mechanisms in place to safeguard the rights of indigenous children; and, lastly, an article on the Uantakua programme in Mexico, which uses information and communication technologies in bilingual schools with large indigenous populations.

Snoring and its association with asthma in Indigenous children living in the Torres Strait and Northern Peninsula Area

Objective: Respiratory health of Indigenous and minority ethnic groups in affluent countries is poorer than their non-minority counterparts and sleep disorders are no exception. In children, obstructive sleep apnoea has the potential to result in serious long-term consequences. In 1999, we studied 1650 children and adolescents living in the Torres Strait and the Northern Peninsula Area, Australia. Here we report prevalence of snoring in these communities and relate its association with asthma symptoms. Methods: A population-based cross-sectional study was conducted in the Torres Strait region. Five indigenous communities were randomly selected and information was collected using a structured face-to-face interview based on a standardized questionnaire. There was a 98% response rate, and 1650 children, 0-17 years of age, were included in the study. Results: Overall, the prevalence of snoring was 14.2% (95% CI 12.5-15.9); 3.6% (95% CI 2.7-4.6) reported snorting, and 6% (95% CI 4.9-7.2) reported restless sleep. The prevalence of snoring was significantly higher among males (17.1% for males and 10.8 for females, P = 0.005). Children were five times more likely to have experienced snoring and snorting if they reported wheezing in the last 12 months. Conclusion: We conclude that the prevalence of symptoms suggestive of obstructive sleep problems is relatively high in children of this region. This highlights the need for awareness among the community patients and physicians about the problem of obstructive sleep-disordered breathing, especially in children with asthma, and for the need for further studies to measure prevalence of sleep breathing disorders among Indigenous Australians.

Hospital-based case-control study of bronchiectasis in indigenous children in central Australia

Background: Childhood pneumonia has been reported to be associated with the development of bronchiectasis but there are no case-control studies that have examined this. This study examined the relationship between hospital admission for episode(s) of pneumonia and the risk of radiologically proven bronchiectasis. Methods: A medical record-based case-control study of bronchiectasis in Indigenous children was conducted in Central Australia. Controls (183), matched to cases (61) by gender, age and year of diagnosis, were Indigenous children hospitalized with other conditions. Results: There was a strong association between a history of hospitalized pneumonia and bronchiectasis [odds ratio (OR), 15.2; 95% confidence interval (95% CI) 4.4-52.7]. This was particularly evident in recurrent hospitalized pneumonia (P for trend < 0.01), severe pneumonia episodes with longer hospital stay (P for trend < 0.01), presence of atelectasis (OR 11.9; 95% CI 3.1-45.9) and requirement for oxygen (P for trend < 0.01). The overall number of pneumonia episodes, rather than its site, was associated with bronchiectasis. Although the total number of pneumonia episodes in the first year of life did not increase the risk of bronchiectasis, more severe episodes early in life did. Malnutrition, premature birth and being small for gestational age were more common findings among cases. Breast-feeding appeared to be a protective factor (OR 0.2; 95% CI 0.1-0.7). Conclusions: Although we cannot fully answer the question of why bronchiectasis is much more common in Indigenous children, we have provided strong evidence of an association between bronchiectasis and severe and recurrent pneumonia episodes in infancy and childhood.

A visiting occupational therapy service to indigenous children in school: Results of a pilot project

The need for additional support for Indigenous children at school is well documented. Occupational therapists are well positioned to form part of this support. However, many occupational therapists report that Indigenous families do not access their services and when they do, the occupational therapist feels uncertain about how best to meet their needs. This article documents a pilot project which delivered occupational therapy services within several schools and preschools in Brisbane which had significant numbers of Indigenous students. The project was evaluated using a qualitative methodology and included focus groups and interviews with teachers and parents. The results indicated that in general the service provided valuable support to students, teachers and parents. In particular, providing the service within the school context was seen as critical to its success. Suggestions for improvements in future support services are also provided.

Peru: intercultural bilingual education program for better performance in schools the case of the indigenous children of the Amazon

Este estudio describe el diseño y la evaluación ex-ante de un Programa de Educación Intercultural Bilingüe en la región amazónica de Perú. Los beneficiarios son los niños que no hablan español de tres comunidades étnicas amazónicas: awarunas, ashaninkas y shipibos-conibos, quienes son una pequeña minoría; los peruanos más pobres y con menor nivel de rendimiento en comprensión de lectura y matemáticas básicas, y el nivel más bajo de la matrícula, la escuela y las tasas de transición.

Zinc and vitamin A supplementation in Indigenous Australian children hospitalised with lower respiratory tract infection: a randomised controlled trial

Objective: To evaluate the efficacy of supplementation with zinc and vitamin A in Indigenous children hospitalised with acute lower respiratory infection (ALRI). Design: Randomised controlled, 2-by-2 factorial trial of supplementation with zinc and vitamin A. Setting and participants: 187 Indigenous children aged < 11 years hospitalised with 215 ALRI episodes at Alice Springs Hospital (April 2001 to July 2002). Interventions: Vitamin A was administered on Days 1 and 5 of admission at a dose of 50 000 IU (infants under 12 months), or 100 000 IU; and zinc sulfate was administered daily for 5 days at a daily dose of 20 mg (infants under 12 months) or 40 mg. Main outcome measure: Time to clinical recovery from fever and tachypnoea, duration of hospitalisation, and readmission for ALRI within 120 days. Results: There was no clinical benefit of supplementation with vitamin A, zinc or the two combined, with no significant difference between zinc and no-zinc, vitamin A and no-vitamin A or zinc + vitamin A and placebo groups in time to resolution of fever or tachypnoea, or duration of hospitalisation. Instead, we found increased morbidity; children given zinc had increased risk of readmission for ALRI within 120 days (relative risk, 2.4; 95% CI, 1.003–6.1). Conclusion: This study does not support the use of vitamin A or zinc supplementation in the management of ALRI requiring hospitalisation in Indigenous children living in remote areas. Even in populations with high rates of ALRI and poor living conditions, vitamin A and zinc therapy may not be useful. The effect of supplementation may depend on the prevalence of deficiency of these micronutrients in the population.

Study of the antibody response against Mycobacterium tuberculosis antigens in Warao Amerindian children in Venezuela

This study was aimed at investigating alternate methods for serodiagnosis of tuberculosis (TB), which are needed because bacteriologic diagnosis of childhood TB is difficult. A selection of 80 serum and saliva samples were tested from Warao indigenous children under 15 years of age; 34 high TB suspects (28 positive and 6 negative for the tuberculin skin test, TST) and 46 healthy contact children (32 positive and 14 negative for the TST). Several enzyme-linked immunosorbent assay (ELISA) serological tests were developed to test for Mycobacterium tuberculosis-specific antibodies, including serum IgA, IgG, IgE, and secretory IgA (sIgA) in saliva against 3 specific antigens (PPD, HSP60, 38 kDa). Of these, 2 antigens, PPD and 38 kDa, showed significantly higher reactivity. The sensitivity and specificity of these tests for diagnosis remained limited, between 26.5% and 38.2%, and 77.4% and 97%, respectively. Of all the samples studied and combinations realized between all isotypes and antigens combined with 3 isotypes (anti-PPD IgG, IgE, and anti-38kDa sIgA) managed to detect the largest number of patients, showing an improved sensitivity level of 64.7%, although specificity levels dropped to 81.8%. These results were compared with the Omega diagnostics commercial kit results. The commercial kits showed significantly lower reactivity (sensitivity of 20% and 13.33% to Myco G and Complex Plus, respectively) and a specificity of 100%. This study shows that in indigenous populations of Venezuela, where invasive procedures cannot be used to select samples but evaluation with a chest X-ray for radiological studies is available, the combination of 3 specific isotypes may be a useful tool to increase diagnostic accuracy with pulmonary TB in this population, when used together with clinical and epidemiological criteria.

INFECTION: ITS ECOLOGICAL DETERMINANTS AMONG CHILDREN IN NORTHERN CHILE

In developing countries, infection and malnutrition, and their interaction effects, account for the majority of childhood deaths and chronic deficits in growth and development. To promote child health, the causal determinants of infection and malnutrition and cost-effective interventions must be identified. To this end, medical examinations of 988 children (age two weeks to 14 years) living at three altitudes (coastal < 300m; sierra (TURN) 3,000m; and altiplano > 4,000m) in Chile's northermost Department of Arica revealed that 393 (40%) of the youngsters harbored one or more infections. When sorted by region and ethnicity, indigenous children of the highlands had infection rates 50% higher than children of Spanish descent living near the coast.^ An ecological model was developed and used to examine the causal path of infection and measure the effect of single and combined environmental variables. Family variables significantly linked to child health included maternal health, age and education. Significant child determinants of infection included the child's nutrient intake and medical history. When compared to children well and free of disease, infected youngsters reported a higher incidence of recent illness and a lower intake of basic foodstuffs. Traditional measures of child health, e.g. birth condition, weaning history, maternal fertility, and family wealth, did not differentiate between well and infected children.^ When height, weight, arm circumference, and subcapular skinfold measurements were compared, infected children, regardless of age, had smaller arm circumferences, the statistical difference being the greatest for males, age nine to eleven. Height and weight, the traditional growth indices, did not differentiate between well and infected groups.^ Infection is not determined by a single environmental factor or even a series of variables. Child health is ecological in nature and cannot be improved independent of changes in the environment that surrounds the child. To focus on selected child health needs, such as feeding programs or immunization campaigns, without simultaneously attending to the environment from which the needs arose is an inappropriate use of time, personnel, and money. ^

La identidad autóctona y el aprendizaje del español como segunda lengua en comunidades indígenas de Hispanoamérica : el caso de Ecuador

Cette recherche se construit autour d’un travail de terrain réalisé dans trois communautés autochtones quichuas vivant au nord de l’Équateur. Il prétend étudier l’incidence que devrait avoir la diversité culturelle et linguistique dans les politiques éducatives en milieu plurilingue et multiculturel. En Amérique hispanique, l’éducation des peuples autochtones n’a jamais été très attentive à leurs besoins spécifiques en ce qui a trait à l’apprentissage de l’espagnol comme langue seconde. En effet, les motivations des apprenants, plus instrumentales qu’intégratives, prouvent que les autochtones apprennent la langue espagnole presqu’exclusivement pour communiquer, sans vraiment être intéressés au groupe natif de cette langue. De plus, notre recherche sur le terrain avec les apprenants du peuple Otavalo nous a démontré que leur très forte identification ethnique influence l’acquisition de l’espagnol. D’une part, ils sont plus enclins à se distinguer des autres, spécialement des hispano parlants, et de l’autre, ils réussissent plus difficilement à atteindre une compétence élevée dans la langue seconde. Notre recherche conclut donc que l’éducation, qu’elle soit issue du système national ou bilingue, devrait davantage prendre en considération l’identité ethnolinguistique des nombreux enfants indigènes, afin de ne pas préjudicier leurs droits. Ceci permettrait de favoriser un apprentissage positif et significatif de l’espagnol comme langue seconde ou langue maternelle, mais tout en consolidant l’identité autochtone des apprenants.

"Pour l'amour de Dieu": des missionnaires coréens à la rencontre des Anicinabek

Cette recherche vise à comprendre comment le processus d’évangélisation fonctionne à l’époque contemporaine, caractérisée par la globalisation. Elle prend comme étude de cas les activités missionnaires d’une église coréenne évangélique dans une communauté anicinabe du Québec (Abitibi). L’analyse d’une séquence de mission estivale relate la rencontre entre deux groupes représentant chacun l’un pour l’autre l’altérité radicale : des jeunes non occidentaux et qui ne sont pas missionnaires de carrière, face à des enfants amérindiens et à leurs parents plus familiers avec le catholicisme. Du côté des missionnaires, l’analyse révèle les motivations, les objectifs, les stratégies employées et les impacts potentiels de ce temps hors du quotidien. Du côté des Anicinabek, elle montre la variété des réponses, dont la réception, principalement autour de la notion de guérison, et les limites de la réciprocité recherchée.

Saúde materno-infantil e nutrição de crianças Kaiowá e Guaraní, Área Indígena de Caarapó, Mato Grosso do Sul, Brasil

Este trabalho teve como proposta estudar o estado nutricional de crianças indígenas e conhecer condições de saúde materno-infantil. Trata-se de um estudo transversal, com uma amostra de 137 crianças de zero a 59 meses de idade, das comunidades Kaiowá e Guaraní, Área Indígena de Caarapó, Mato Grosso do Sul, Brasil. Foram realizadas entrevistas com a aplicação de um questionário sobre as condições de saúde materno-infantil. A avaliação nutricional foi obtida por meio de medidas antropométricas (peso e estatura). Verificou-se que 19,7% das mães não realizaram o pré-natal e 53,3% tiveram parto domiciliar. A ocorrência de desnutrição para o índice peso/idade foi de 18,2% e para o índice altura/idade foi de 34,1%. A proporção de crianças desnutridas quando separadas por sexo, faixa etária e escolaridade materna não apresentou diferença estatisticamente significante para ambos os índices. Este estudo evidenciou elevada ocorrência de desnutrição infantil e uma preocupante situação de saúde materno-infantil.