RESUMO
The Bantu expansion, which started in West Central Africa around 5,000 BP, constitutes a major migratory movement involving the joint spread of peoples and languages across sub-Saharan Africa. Despite the rich linguistic and archaeological evidence available, the genetic relationships between different Bantu-speaking populations and the migratory routes they followed during various phases of the expansion remain poorly understood. Here, we analyze the genetic profiles of southwestern and southeastern Bantu-speaking peoples located at the edges of the Bantu expansion by generating genome-wide data for 200 individuals from 12 Mozambican and 3 Angolan populations using â¼1.9 million autosomal single nucleotide polymorphisms. Incorporating a wide range of available genetic data, our analyses confirm previous results favoring a "late split" between West and East Bantu speakers, following a joint passage through the rainforest. In addition, we find that Bantu speakers from eastern Africa display genetic substructure, with Mozambican populations forming a gradient of relatedness along a North-South cline stretching from the coastal border between Kenya and Tanzania to South Africa. This gradient is further associated with a southward increase in genetic homogeneity, and involved minimum admixture with resident populations. Together, our results provide the first genetic evidence in support of a rapid North-South dispersal of Bantu peoples along the Indian Ocean Coast, as inferred from the distribution and antiquity of Early Iron Age assemblages associated with the Kwale archaeological tradition.
Assuntos
População Negra/genética , Cromossomos Humanos/genética , Genômica/métodos , Polimorfismo de Nucleotídeo Único , Angola/etnologia , População Negra/etnologia , Emigração e Imigração , Evolução Molecular , Genética Populacional , Humanos , Índia/etnologia , Oceano Índico , Moçambique/etnologia , FilogeografiaRESUMO
Two cases of confirmed SARS-CoV-2 infection with the B.1.351 variant were reported in France in mid-January, 2020. These cases attended a gathering in Mozambique in mid-December 2020. Investigations led to the identification of five imported cases responsible for 14 transmission chains and a total 36 cases. Epidemiological characteristics seemed comparable to those described before the emergence of the South African variant B.1.351. The lack of tertiary transmission outside of the personal sphere suggests that distancing and barrier measures were effective.
Assuntos
COVID-19/diagnóstico , COVID-19/virologia , SARS-CoV-2/genética , Viagem , Adolescente , Adulto , Idoso , População Negra , COVID-19/epidemiologia , COVID-19/transmissão , Teste de Ácido Nucleico para COVID-19 , Criança , Doenças Transmissíveis Importadas , Feminino , França/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Moçambique/etnologia , SARS-CoV-2/isolamento & purificação , Adulto JovemRESUMO
"End of AIDS" requires ambitious testing, treatment, and adherence benchmarks, like UNAIDS' "90-90-90 by 2020." Mozambique's efforts to improve essential maternal/infant antiretroviral treatment (ART) exposes how austerity-related health system short-falls impede public HIV/AIDS service-delivery and hinder effective maternal ART and adherence. In therapeutic borderlands-where household impoverishment intersects with health-system impoverishment-HIV+ women and over-worked care-providers circumnavigate scarcity and stigma. Worrisome patterns of precarious use emerge-perinatal ART under-utilization, delayed initiation, intermittent adherence, and low retention. Ending HIV/AIDS requires ending austerity and reinvesting in a public sector health workforce to ensure universal health coverage as household and community safety nets.
Assuntos
Síndrome da Imunodeficiência Adquirida , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Síndrome da Imunodeficiência Adquirida/economia , Síndrome da Imunodeficiência Adquirida/etnologia , Síndrome da Imunodeficiência Adquirida/prevenção & controle , Adulto , Idoso , Antropologia Médica , Antirretrovirais/uso terapêutico , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Pessoa de Meia-Idade , Moçambique/etnologia , Gravidez , Cobertura Universal do Seguro de Saúde , Adulto JovemRESUMO
South Africa continues to bear a heavy burden of HIV and a significant proportion of the nation's population consists of immigrants from other severely afflicted African nations. Yet little is known about how migrant populations respond to HIV in shifting cultural and clinical landscapes. Analysing 21 ethnographic life history interviews, this paper explores the social complexities of living with antiretroviral therapy and disclosure of serostatus among HIV-positive Mozambican migrants in Johannesburg. It focuses on (i) conceptualising the 'biosocial ambiance of illness'; (ii) how transformations occur in perceptions of disease; and (iii) how stigma produces an ambit of loneliness and secrecy, which inflects disclosure unevenly in different life-spaces and health-worlds. The net effect of these three processes is a silence which is detrimental to the social normalisation of HIV, treatment-seeking and clinical drug adherence, which in turn may increase rates of morbidity and mortality and contribute to drug resistance.
Assuntos
Confidencialidade/psicologia , Revelação , Infecções por HIV/epidemiologia , Solidão/psicologia , Estigma Social , Migrantes , Adulto , Antropologia Cultural , Antirretrovirais/uso terapêutico , Feminino , Infecções por HIV/tratamento farmacológico , Humanos , Masculino , Moçambique/etnologia , Preconceito , África do Sul/epidemiologia , Migrantes/psicologia , Migrantes/estatística & dados numéricosRESUMO
Intra-vaginal drying and tightening and labia minora elongation are commonly practised in some parts of southern Africa. We sought to capture data on these practices among women living in Zambézia province, Mozambique. Information was gathered from 3543 female heads of household on > 500 variables, including vaginal practices, in 2014. Women who planned to use intra-vaginal tightening substances had 1.84 times higher odds of ever receiving an HIV test (p < 0.001) and 1.40 times higher odds of at least one antenatal care visit attended during last pregnancy (p = 0.015). Women who had or planned to undergo labia minora elongation had 2.61 times higher odds of receiving an HIV test in the past (p < 0.001) and 1.60 times higher odds of attending at least one antenatal care visit during their last pregnancy (p < 0.001). There was little evidence for a relationship between self-reported HIV status and anticipated use of intra-vaginal tightening substances (p = 0.21). Current or anticipated participation in labia elongation showed a protective effect on HIV infection (p = 0.028). Given documented associations between intra-vaginal substance use, vaginal infections and HIV acquisition, understanding the prevalence of vaginal practices is an essential component to addressing the epidemic.
Assuntos
Modificação Corporal não Terapêutica/psicologia , Conhecimentos, Atitudes e Prática em Saúde/etnologia , Comportamento Sexual/etnologia , Normas Sociais , Adolescente , Cultura , Feminino , Humanos , Moçambique/etnologia , Adulto JovemRESUMO
Mineworkers are considered a population at risk for HIV due to risk behaviors associated with migratory work patterns. This was the first study in Mozambique to determine the prevalence of HIV and associated demographic and risk behaviors, and assess use and access to prevention and healthcare services among Mozambicans working in South African mines. Men who had worked in a South African mine in the past 12 months were recruited between February and May 2012 using time location sampling (TLS) at the Ressano Garcia border between Mozambique and South Africa. Demographic and behavioral data were collected through a standardized questionnaire, and HIV prevalence was estimated by testing dried blood spots (DBS) with two enzyme immunoassays. In total, 432 eligible mine workers were recruited. Mean age was 43 years. Most were married or cohabitating; among them, 12.6 % had two or more wives/marital partners in Mozambique. In the 12 months preceding the survey, 24.7 % had an occasional sexual partner, and 6.6 % had at least one partner who was a female sex worker. Only one in five (18.5 %) used a condom during last sex. HIV prevalence among mineworkers was 22.3 %, and 74.6 % of those who tested positive as part of the survey did not know their status. HIV prevalence was significantly higher (p = 0.018) among those that were uncircumcised (31.2 %) than those who were circumcised (18.5 %). Multiple partners (multiple spouses, cross-border relations, and multiple occasional partnerships), inconsistent condom use, and a high proportion of infected mineworkers who do not know their HIV status increases the risk of HIV transmission in this population. Combination strategies involving the promotion of condom use, HIV testing, and male circumcision should be strengthened among mineworkers.
Assuntos
Emprego , Infecções por HIV/epidemiologia , Programas de Rastreamento/métodos , Assunção de Riscos , Comportamento Sexual , Migrantes , Adulto , Estudos Transversais , Feminino , Infecções por HIV/diagnóstico , Infecções por HIV/transmissão , Humanos , Masculino , Pessoa de Meia-Idade , Mineração , Moçambique/etnologia , Prevalência , Parceiros Sexuais , Fatores Socioeconômicos , África do Sul/epidemiologia , Inquéritos e Questionários , Populações Vulneráveis , Adulto JovemRESUMO
BACKGROUND: Reducing childhood mortality is the fourth goal of the Millennium Development Goals agreed at the United Nations Millennium Summit in September 2000. However, childhood mortality in developing countries remains high. Providing an accurate picture of space and time-trend variations in child mortality in a region might generate further ideas for health planning actions to achieve such a reduction. The purpose of this study was to examine the spatio-temporal variation for child mortality rates in Manhiça, a district within the Maputo province of southern rural Mozambique during the period 1997-2005 using a proper generalized linear mixed model. RESULTS: The results showed that childhood mortality in all the area was modified from year to year describing a convex time-trend but the spatial pattern described by the neighbourhood-specific underlying mortality rates did not change during the entire period from 1997 to 2005, where neighbourhoods with highest risks are situated in the peripheral side of the district. The spatial distribution, though more blurred here, was similar to the spatial distribution of child malaria incidence in the same area. The peak in mortality rates observed in 2001 could have been caused by the precipitation system that started in early February 2000, following which heavy rains flooded parts of Mozambique's southern provinces. However, the mortality rates at the end of the period returned to initial values. CONCLUSIONS: The results of this study suggest that the health intervention programmes established in Manhiça to alleviate the effects of flooding on child mortality should cover a period of around five years and that special attention might be focused on eradicating malaria transmission. These outcomes also suggest the utility of suitably modelling space-time trend variations in a region when a point effect of an environmental factor affects all the study area.
Assuntos
Mortalidade da Criança/etnologia , Mortalidade da Criança/tendências , Fatores Etários , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Moçambique/etnologia , Distribuição de Poisson , Distribuição Aleatória , Fatores de TempoRESUMO
The biofuel project is an agro-industrial development and politically contested policy process where governments increasingly become global actors. European Union (EU) biofuels policy rests upon arguments about societal benefits of three main kinds - namely, environmental protection (especially greenhouse gas savings), energy security and rural development, especially in the global South. Each argument involves optimistic assumptions about what the putative benefits mean and how they can be fulfilled. After examining those assumptions, we compare them with experiences in three countries - Germany, Brazil and Mozambique - which have various links to each other and to the EU through biofuels. In those case studies, there are fundamental contradictions between EU policy assumptions and practices in the real world, involving frictional encounters among biofuel promoters as well as with people adversely affected. Such contradictions may intensify with the future rise of biofuels and so warrant systematic attention.
Assuntos
Agricultura , Biocombustíveis , Etanol , Abastecimento de Alimentos , Política Pública , Saúde da População Rural , Agricultura/economia , Agricultura/educação , Agricultura/história , Agricultura/legislação & jurisprudência , Biocombustíveis/economia , Biocombustíveis/história , Brasil/etnologia , Países em Desenvolvimento/economia , Países em Desenvolvimento/história , Etanol/economia , Etanol/história , União Europeia/economia , União Europeia/história , Abastecimento de Alimentos/economia , Abastecimento de Alimentos/história , Abastecimento de Alimentos/legislação & jurisprudência , Alemanha/etnologia , História do Século XX , História do Século XXI , Moçambique/etnologia , Saúde Pública/economia , Saúde Pública/educação , Saúde Pública/história , Saúde Pública/legislação & jurisprudência , Política Pública/economia , Política Pública/história , Política Pública/legislação & jurisprudência , Saúde da População Rural/história , População Rural/históriaRESUMO
Foreign-born immigrants residing in South Africa largely come from sub-Saharan countries with the highest HIV prevalence rates worldwide. These migrants may manage HIV medically, despite precarious conditions, but little is known about how they manage socially in shifting cultural and clinical landscapes. In this article, I explore the complexities of stigma by juxtaposing perceptions of illness between HIV-positive Mozambican migrants in care and members of their communities unware of their own serostatus. I argue that stigma is tied to location through social networks. Sharp perceptual contrasts between patients and community members result in equally contrasting social positionalities and othering in sprawling migrant communities, where secrecy and gossip become strategies of social survival. Due to its social lethality, stigma continues to cause distress.
Assuntos
Emigrantes e Imigrantes , Infecções por HIV/etnologia , Estigma Social , Adolescente , Adulto , Antropologia Médica , Criança , Pré-Escolar , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Acessibilidade aos Serviços de Saúde , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Moçambique/etnologia , Pessoalidade , África do Sul , Adulto JovemRESUMO
Researchers at the South African Medical Research Council/University of the Witwatersrand Rural Public Health and Health Transitions Research Unit (Agincourt) fieldsite in rural South Africa consider Mozambican residents more vulnerable than others in the local population. These self-settled refugees, many of whom are still not South African citizens, primarily came to South Africa in the 1980s during the Mozambican Civil War. This perceived economic vulnerability is rooted in their difficulties in accessing social grants, until recently legally available only to those with South African citizenship documentation. This paper focuses on semi-structured interviews with 30 'older' women of Mozambican-descent living in the Agincourt area. These interviews highlight three important aspects of vulnerability; the respondents: (1) perceive a risk of deportation despite their having lived in the country for 20 years, (2) are unable to easily access social grants, namely the state-funded old-age pension, and (3) struggle to make ends meet when faced with daily needs and crisis situations. All three of these vulnerabilities were mediated to some extent by these women's resourcefulness. They generated ties to South Africa through obtaining identification-documents, used these documents to access pensions, and used the pensions to help them sustain their multigenerational households.
Assuntos
Financiamento Governamental , Refugiados/psicologia , Populações Vulneráveis , Idoso , Feminino , Infecções por HIV , Humanos , Entrevistas como Assunto , Moçambique/etnologia , Pensões , População Rural , África do SulRESUMO
In Mozambique, involuntary childlessness triggers immediate treatment seeking, especially on the woman's side. Treatment processes involve the activation and/or creation of situational social networks that provide emotional, instrumental, and informational support. These are formed through careful processes of disclosure management, and are embedded in social relations and local moral configurations of family making, reproduction, and healing. In this article I explore social networks involving friends, family, religion, and emerging biosocial relations, some or all of which are involved in Mozambican women's and couples' therapeutic navigations in the quest for fertility.
Assuntos
Infertilidade Feminina/etnologia , Infertilidade Feminina/terapia , Mulheres/psicologia , Adulto , Antropologia Médica , Feminino , Fertilidade , Humanos , Moçambique/etnologia , Apoio Social , África do Sul/etnologiaRESUMO
Resumo O presente artigo se constrói a partir de reflexões baseadas numa psicanálise brasileira com interface na psicologia social, com o objetivo de dialogar com a Saúde Mental de Moçambique, um país que se subjetiva numa lógica não-ocidentalizada, cujo sistema de cuidado existente há séculos provém do curandeirismo, (re)conhecido no país como Medicina Tradicional. Sendo as políticas públicas de saúde mental regidas a partir de uma visão ocidental, este estudo questionou as reformulações teóricas necessárias para a inserção de novos dispositivos clínicos no país que incluíssem o saber tradicional. Como se trata de uma travessia, optou-se pelo método de escrita de cartas para melhor contemplar o encontro entre estas duas realidades tão diferentes e ao mesmo tempo tão semelhantes.
Resumen El presente artículo se construye desde reflexiones basadas en un psicoanálisis brasileño con interfaz en la psicología social, con el objetivo de dialogar con la Salud Mental de Mozambique, un país que se subjetiva en una lógica no occidentalizada, cuyo sistema de cuidado existente desde hace siglos se deriva del curanderismo, (re)conocido en el país como Medicina Tradicional. Siendo las políticas públicas de salud mental regidas dentro de una lógica occidental, se cuestionó las reformulaciones teóricas necesarias para la inserción de nuevos dispositivos clínicos en el país que incluyeran el saber tradicional. Como se trata de una travesía, se optó por el método de escritura de cartas para mejor contemplar el encuentro entre estas dos realidades tan diferentes y al mismo tiempo tan semejantes.
Abstract This article is built on reflections based on a Brazilian psychoanalysis with an interface in social psychology, aiming to integrate it into the Mozambican Mental Health. Mozambique is a country that operates in a non-westernized logic; with a care system that for centuries has come from healing practices, known in the country as Traditional Medicine. As public mental health policies are governed by a Western perspective, a question was raised about the theoretical reformulations that might be necessary for the insertion of new clinical devices in the country, including traditional knowledge. Being a traverse, the method of writing letters was chosen to better contemplate the encounter between these two realities, so different and yet so similar.
Assuntos
Psicanálise , Terapêutica , Correspondência como Assunto , Saúde Mental , Medicina Tradicional , Métodos , Moçambique/etnologiaRESUMO
Labia minora elongation has been documented as being practiced by 98.6% of the women in Tete province, Mozambique. Women engage in this procedure before the first menstruation. In this article we report on the findings from the male respondents from Tete province that participated in the qualitative component of the World Health Organization-supported multicountry Gender, Sexuality, and Vaginal Practices study. The men reported that the main motivation behind labia minora elongation is to enhance the sexual pleasure for both female and male partners. Researching what men know and perceive of labia minora elongation is crucial to understanding the contribution of this practice for sexual health. This knowledge is helpful to inform the development of new human immunodeficiency virus (HIV)/sexually transmitted infection (STI) prevention technologies and culturally appropriate information, education, and communication interventions.
Assuntos
Modificação Corporal não Terapêutica , Conhecimentos, Atitudes e Prática em Saúde/etnologia , Comportamento Sexual/etnologia , Vulva , Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Moçambique/etnologia , Adulto JovemAssuntos
Acessibilidade aos Serviços de Saúde , Disparidades em Assistência à Saúde/etnologia , Segurança do Paciente , Migrantes , Adulto , Idoso , Angola/etnologia , Brasil/etnologia , Cabo Verde/etnologia , Feminino , Grupos Focais , Guiné-Bissau/etnologia , Humanos , Idioma , Londres , Masculino , Pessoa de Meia-Idade , Moçambique/etnologia , Portugal/etnologia , São Tomé e Príncipe/etnologia , Timor-Leste/etnologiaRESUMO
Micronutrient deficiency disorders, including pellagra, have emerged as major problems in refugee populations that depend on international relief assistance for food supplies. This report summarizes an investigation of pellagra that occurred among Mozambican refugees in Malawi during 1990.
Assuntos
Surtos de Doenças , Pelagra/epidemiologia , Refugiados , Adulto , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Humanos , Malaui/epidemiologia , Masculino , Moçambique/etnologia , Pelagra/etnologia , Fatores SexuaisRESUMO
BACKGROUND: It is important to monitor health differentials between population groups to understand how they are generated. Internationally displaced people represent one potentially disadvantaged group. We investigated differentials in mortality between children from former Mozambican refugee and host South African households in a rural sub-district in the north-east of South Africa. METHODS: Open prospective cohort of 30 276 children (80 462 person years of follow-up) followed from 1 January 1992 to 31 October 2000 in Limpopo Province, South Africa. Exposure and outcomes data came from the Agincourt Health and Demographic Surveillance System (DSS). RESULTS: There was no difference in infant mortality between children from former Mozambican refugee households and those from South African homes (adjusted rate ratio [RR] = 1.02, 95% CI: 0.79, 1.32), but mortality levels were higher among former Mozambican refugee children during the next 4 years (adjusted RR = 1.91, 95% CI: 1.50, 2.42). Increased mortality levels were also seen among children from larger households and whose mother died, while children born to mothers aged >40 years or with higher education were at lower risk. Measured maternal, household, and health service utilization characteristics could not explain the difference in mortality between children from former Mozambican refugee and South African households. Former Mozambican refugee children residing in refugee settlements had higher mortality rates than those residing in more established villages. CONCLUSIONS: This study demonstrates higher childhood, but not infant, mortality rates among children from former Mozambican refugee households compared with those from host South African households in rural South Africa. The lack of legal status and lower wealth of many former Mozambican refugees may partly explain this disparity.
Assuntos
Mortalidade da Criança , Países em Desenvolvimento , Refugiados , Adolescente , Adulto , Criança , Pré-Escolar , Coleta de Dados , Interpretação Estatística de Dados , Feminino , Humanos , Masculino , Idade Materna , Moçambique/etnologia , Cuidado Pré-Natal , População Rural , África do SulRESUMO
Between November 1988 and January 1989, measles outbreaks occurred in 11 Mozambican refugee camps in Malawi with five camps principally affected. A total of 1214 cases were reported. Despite the reduction of the age of measles vaccination to six months in 1987, attack rates were highest in children aged 6-9 months (10-26%); rates were also high in the 0-5 month age group (3-21%). The case-fatality rate was high among children less than five years old (15-21%). Children were being inappropriately vaccinated, either being vaccinated at less than six months of age (2-29%) or failing to receive a second dose if vaccinated at six months (0-25%). With vaccine coverage between 66-87%, vaccine efficacy in children less than five years old was estimated to be more than 90% in the camps principally affected. Reduction of the age of vaccination leads to logistical problems in vaccine delivery in refugee situations. These outbreaks again indicate the need to improve vaccine coverage with the existing Schwarz vaccine, and also highlight the urgent need for an effective single dose measles vaccine for children less than nine months of age.
Assuntos
Surtos de Doenças , Vacina contra Sarampo , Sarampo/epidemiologia , Refugiados , Fatores Etários , Países em Desenvolvimento , Surtos de Doenças/prevenção & controle , Feminino , Humanos , Lactente , Malaui/epidemiologia , Sarampo/prevenção & controle , Moçambique/etnologia , Vigilância da PopulaçãoRESUMO
Between February and October 1990, 18,276 cases of pellagra dermatitis (due to niacin deficiency) were reported among 285,942 Mozambican refugees in Malawi. Overall, 6.3% of the refugee population developed pellagra and the attack rate was 7.8 times higher among women than men. This outbreak followed a 5-month cessation of groundnut distribution (the major source of niacin) to refugees. A matched-pair case-control study confirmed the protective role of the daily consumption of groundnuts (Odds Ratio [OR] = 0.08), as well as the independent role of garden ownership (OR = 0.34), and home maize milling (OR = 0.3). Recommended corrective action included early case finding and treatment, distribution of niacin tablets, prompt identification of groundnut supply on the world market, fortification with niacin of the food ration and diversification of the food basket through access to local markets.
PIP: Between February and October 1990, health workers in Malawi noted 18,276 cases of pellagra among 285,942 Mozambican refugees. This represented a significant increase in pellagra cases (compared with just 1169 cases in 1989). 5 months before each outbreak, the UN High Commission for Refugees and the World Food Program could not obtain groundnuts, a source of niacin, to include in food rations. The food ration distributed to refugees had an average of just 4 mg available niacin equivalent (or 2 mg/1000 kcal) which was considerably less than the recommended daily allowance of 6.6 mg/1000 kcal. The overall attack rate stood at 6.4% (4.9-13.2%. It was higher among refugees living in camps than it was among those living in Malawian villages near the border (10.1% vs. 0.8%). The attack rate was 7.8 times higher in females than males (6.1/1000 vs. 0.78/1000). It was lowest among children under 5 years old (1.7% vs. 7.5% for = or 5 year olds). No infant had pellagra. Researchers compared 126 pellagra cases with 126 controls. The conditional logistic regression indicated that pellagra cases were less likely to eat groundnuts and fish at least once a day within the last 6 months (odds ratio [OR] = .07 and .56, respectively). They tended not to have a garden (OR = .32) and to mill maize at home (OR = .26). Thus, eating groundnuts, milling maize at home, and garden ownership protected the refugees from developing pellagra. In August 1990, relief workers distributed niacin tablets to refugees. The health workers recommended other corrective actions such as early case finding and treatment, identification of groundnut supply on the world market, and diversification of the food basket through access to local markets.
Assuntos
Dieta/efeitos adversos , Surtos de Doenças , Niacina/deficiência , Pelagra/epidemiologia , Pelagra/etiologia , Refugiados , Adolescente , Adulto , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Humanos , Malaui/epidemiologia , Masculino , Moçambique/etnologiaRESUMO
INTRODUCTION: The Comoro archipelago is characterised by a high prevalence of red cell genetic disorders such as G6PD deficiency and haemoglobinopathies, being a region endemic for malaria. Over the last 15 years, the city of Marseilles in France has become the main destination for Comorian immigrants. This Comorian community includes patients with sickle cell disease, sickle cell/beta-thalassaemia trait, thalassaemias and G6PD deficiency. MATERIALS AND METHODS: Allele frequencies for haemoglobin S, beta-thalassaemia and G6PD deficiency were determined from neonatal and prenatal screenings of the Comorian community. Haemoglobin fractions were detected by isoelectrofocalisation, and the quantitation of HbS, HbA, HbA(2) and HbF was performed by cation exchange high performance liquid chromatography. The molecular study involved 31 alleles carrying the betaS mutation (Cd 6 [A-->T]), six beta-thalassaemic alleles and 17 G6PD-deficient alleles, selected from a group of carriers or affected subjects. RESULTS: Allele frequencies were 3% for haemoglobin S, 1% for beta-thalassaemia trait and 9.5% for G6PD deficiency. Molecular analysis had revealed that the African alleles are predominant, being present in almost all the subjects studied. Mediterranean alleles were found for all the beta-thalassaemia mutations and for three G6PD chromosomes out of 17. CONCLUSION: These data are consistent with the mixed Arab and African origin of the population of the Comoro Islands, and are of clinical interest in prenatal and newborn screening plans.
Assuntos
Globinas/genética , Deficiência de Glucosefosfato Desidrogenase/genética , Glucosefosfato Desidrogenase/genética , Hemoglobinopatias/genética , Hemoglobinas Anormais/genética , Alelos , Anemia Falciforme/epidemiologia , Anemia Falciforme/etnologia , Anemia Falciforme/genética , Árabes/genética , População Negra/genética , Comores/epidemiologia , Comores/etnologia , Análise Mutacional de DNA , Feminino , Efeito Fundador , França/epidemiologia , Frequência do Gene , Testes Genéticos , Deficiência de Glucosefosfato Desidrogenase/epidemiologia , Deficiência de Glucosefosfato Desidrogenase/etnologia , Haplótipos/genética , Hemoglobinopatias/epidemiologia , Hemoglobinopatias/etnologia , Hemoglobinas Anormais/análise , Humanos , Índia/etnologia , Recém-Nascido , Irã (Geográfico)/etnologia , Icterícia Neonatal/etnologia , Icterícia Neonatal/genética , Masculino , Moçambique/etnologia , Triagem Neonatal , Diagnóstico Pré-Natal , Prevalência , Deleção de Sequência , Talassemia beta/epidemiologia , Talassemia beta/etnologia , Talassemia beta/genéticaRESUMO
Epidemics of cholera have been frequent in southern Africa since the reintroduction of the disease to the continent in 1970. In late 1992, following a severe drought and an influx of refugees from Mozambique, cholera reappeared in Zimbabwe for the first time since 1985 and rapidly spread through the rural areas of the country. Data relating to symptomatic cholera infection collected during 2 large outbreaks on the eastern border of the country showed that host age and sex were important factors relating to symptomatic infection, as were population density and access to water. Epidemic profiles for the 2 study areas differed in that one of the profiles exhibited a distinct second phase epidemic. This unusual pattern was compared qualitatively with the output of a series of simple mathematical models to examine the contribution of different epidemiological processes to the pattern of disease observed. Model output suggested a complex disease process, in which the dynamics may have been influenced by spatial components. Statistical analysis of these unusual data showed that the observed pattern was independent of the effects of host age or sex, and provided compelling evidence of a marked spatial component of the second phase epidemic.