Investigando uma interrogação brasileira: relatando 16 casos de febre Q em Minas Gerais, Brasil

Q fever has been considered non-existing in Brazil where reports of clinical cases still cannot be found. This case-series of 16 patients is a result of a systematic search for such illness by means of clinical and serologic criteria. Serologic testing was performed by the indirect microimmunofluorescence technique using phase I/II C. burnetii antigens. Influenza-like syndrome was the most frequent clinical form (eight cases - 50%), followed by pneumonia, FUO (fever of unknown origin), mono-like syndrome (two cases - 12.5% each), lymphadenitis (one case - 6.3%) and spondylodiscitis associated with osteomyelitis (one case - 6.3%). The ages varied from four to 67 years old with a median of 43.5. All but one patient had positive serologic tests for phase II IgG whether or not associated with IgM positivity compatible with acute infection. One patient had both phase I and phase II IgG antibodies compatible with chronic Q fever. Seroconvertion was detected in 10 patients. Despite the known limitations of serologic diagnosis, the cases here reported should encourage Brazilian doctors to include Q fever as an indigenous cause of febrile illness.A febre Q continua sendo considerada inexistente no Brasil onde publicações de casos clínicos ainda não são encontráveis. Esta série de casos de 16 pacientes é resultado de uma busca sistemática para esta doença usando-se critérios clínicos e sorológicos. Os testes sorológicos foram realizados pela técnica de microimunofluorescência indireta utilizando-se antígenos de C. burnetii fase I e fase II. Síndrome influenza símile foi a forma clínica mais frequente (oito casos - 50%), seguida pela pneumonia, FOI (febre de origem indeterminada), síndrome mononucleose símile (dois casos - 12,5% cada) e por fim linfoadenite (um caso - 6,3%) e espondilodiscite associada à osteomielite (um caso - 6,3%). As idades variaram de quatro a 67 anos com mediana de 43,5. Todos os pacientes, com exceção de um, tinham testes sorológicos positivos para IgG anti fase II, associado ou não a IgM anti fase II, compatíveis com infecção aguda. Um paciente tinha tanto anticorpos IgG anti fase I quanto anti fase II compatíveis com febre Q crônica. Soroconversão foi detectada em 10 pacientes. A despeito das conhecidas limitações do diagnóstico sorológico os casos aqui relatados devem encorajar os médicos brasileiros a incluir a febre Q como causa nativa de doença febril neste país a ser pesquisada

Hepatitis B and C in household and health services solid waste workers.

Human contact with solid waste poses biological, chemical, and physical health risks for workers involved in waste collection, transportation, and storage. The potential risk to human health resulting from contact with health services waste or household waste still sparks considerable controversy. The aim of this study was to identify the context of scientific discussions on risk/infection from the hepatitis B and C viruses in workers that collect solid waste from health services or households. The search covered publications up to 2013 in Brazilian and international databases, and 11 articles were selected through a literature review. Of these, six conclude that there is an increased risk of infection in workers that collect household waste when compared to those unexposed to waste, three point to greater risk for workers that collect health services waste as compared to those that collect ordinary waste, and the other two found no difference between exposed and unexposed individuals

Análise da correlação entre os níveis de RNA do HIV-1 no líquido cefalorraquidiano e plasma em pacientes com doença neurológica oportunista

The question of whether HIV-1 RNA in cerebrospinal fluid (CSF) is derived from viral replication in the central nervous system or simply reflects the transit of infected lymphocytes from the blood compartment has long been a matter of debate. Some studies found no correlation between CSF and plasma viral load, whereas others did. The lack of a correlation between the two compartments suggests that the presence of HIV-1 RNA is not simply due to the passive passage of the virus from blood to CSF but rather due to intrathecal replication. To evaluate the correlation between plasma and CSF HIV-1 RNA levels and to identify situations in which there is no correlation between the two compartments, seventy patients were prospectively studied. The association between CSF and plasma viral load was evaluated in the total population and in subgroups of patients with similar characteristics. A correlation between the CSF and plasma compartments was observed for patients undergoing highly active antiretroviral therapy (HAART), those with a CD4 T lymphocyte count lower than 200 cells/mm³, and those with increased CSF protein content. On the other hand, no correlation was observed for patients without adequate virological control, who had a CD4 count higher than 200 cells/mm³ and who did not use HAART. The correlation between the two compartments observed in some patients suggests that CSF HIV-1 RNA levels may reflect plasma levels in these subjects. In contrast, the lack of a correlation between the two compartments in patients who were not on HAART and who had normal CSF proteins and a poor virological control possibly indicates compartmentalization of the virus in CSF and, consequently, plasma-independent intrathecal viral replication.Tem sido objeto de debate a questão se o RNA do HIV-1 no líquido cefalorraquidiano (LCR) é derivado da replicação viral no sistema nervoso central ou simplesmente reflete o tráfego de linfócitos infectados do compartimento sanguíneo. Alguns estudos não mostraram correlação entre a carga viral do plasma e LCR, mas outros sim. A falta de correlação entre os dois compartimentos sugere que a presença de RNA do HIV-1 não é simplesmente devido à passagem do vírus do plasma para o LCR, mas sim a uma replicação intratecal. Para avaliar a correlação entre os níveis de RNA do HIV-1 no plasma e no LCR e tentar identificar situações, na qual, não existe a correlação entre os dois compartimentos avaliaram-se setenta pacientes prospectivamente. A associação entre a carga viral do LCR e plasma foi avaliada na população total e em subgrupos de pacientes com características similares. A correlação entre os dois compartimentos foi observada em pacientes que estavam em uso da terapia antiretroviral (HAART), naqueles que tinham contagem de linfócitos CD4 menor que 200 céls/mm³ e naqueles com aumento da concentração de proteínas no LCR. Por outro lado, não houve correlação para os pacientes que não tinham um controle virológico adequado, os que tinham contagem de CD4 maior que 200 céls/mm³ e aqueles que não estavam usando HAART. A correlação entre os dois compartimentos observada em alguns pacientes sugere que os níveis de RNA do HIV-1 no LCR podem refletir os níveis plasmáticos nestes pacientes. E a falta de correlação ente os dois compartimentos em pacientes que não usavam HAART, nos que tinham uma concentração de proteínas no LCR normal, e nos que não apresentavam bom controle virológico, indica provavelmente a compartimentalização do vírus no LCR e consequentemente replicação viral intratecal independente da do plasma

Differences in HIV-risk behavior of bisexual men in their relationships with men and women

OBJETIVO: Descrever o comportamento bissexual masculino quanto à identidade sexual, uso de preservativo, freqüência de relações sexuais e tipos de parceria e verificar diferenças entre práticas protegidas nas suas relações com homens e mulheres. MÉTODOS: Estudo transversal aninhado em coorte de homossexuais e bissexuais HIV negativos implantada em 1994 em Belo Horizonte (Projeto Horizonte). Dos 1.025 voluntários recrutados entre 1994 e 2005, foram selecionados 195 que relataram, na admissão, ter tido relações sexuais com homens e mulheres nos seis meses anteriores à entrevista. Foi criado índice de risco comportamental, designado Índice de Risco Horizonte, que incorpora uma constante para cada prática sexual não protegida, ajustada segundo o número de encontros sexuais. RESULTADOS: Houve predomínio de atividade sexual com homens; a maioria se auto-referiu como bissexual (55%) e homossexual (26%). A mediana do número de parceiros homens ocasionais nos últimos seis meses (4) foi superior ao de parceiras ocasionais (2) e de parceiros fixos de ambos os sexos (1). No sexo vaginal com parceira fixa, o uso inconsistente do preservativo foi de 55%, comparado com 35% e 55% no sexo anal insertivo e receptivo com parceiros fixos. O índice foi maior para os que relataram terem tido sexo com homens e mulheres comparado com os que tiveram sexo exclusivamente com mulheres ou homens. CONCLUSÕES: As situações de risco para HIV foram mais freqüentes entre os homens que relataram atividade sexual com homens e mulheres. Os comportamentos sexuais e de proteção dos bissexuais diferem conforme gênero e estabilidade da parceria, havendo maior desproteção com parceiras fixas mulheres.OBJECTIVE: To describe bisexual men's behavior in terms of sexual identity, condom use, frequency of sexual intercourse and types of partners and to determine rates of inconsistent condom according to partner's gender. METHODS: Cross-sectional study nested in a cohort of HIV-negative homosexual and bisexual men in the city of Belo Horizonte, Southeastern Brazil, followed up since 1994 (Horizonte Project). Of 1,025 subjects enrolled between 1994 and 2005, 195 volunteers who reported at admission having sexual relations with men and women during the previous six months were selected. A behavioral risk index, called Horizonte Risk Index, was estimated. It incorporates a constant assigned to each type of unprotected sexual act, adjusted for the number of sexual encounters. RESULTS: Sexual activity with men predominated; most considered themselves as bisexual (55%) and homosexual (26%). During the six months prior to the study, median number of casual male partners (4) was higher than both casual female partners (2) and steady male or female partners (1). During vaginal sex with a steady partner, the rate of inconsistent condom use was 55%, compared to 35% and 55% in anal insertive and anal receptive sex, respectively, with steady male partners. The index was higher for those having sex with men and women compared to those having sex either exclusively with women or men (p=0.004). CONCLUSIONS: HIV risk behavior was more frequent among men who reported sexual activity both with men and women. Bisexual men display different sexual and protective behavior according to gender and steadiness of relationships, and female steady partners had more unprotected encounters

Urban Waste Collectors in Belo Horizonte, Brazil: Their Perceptions of Occupational Health Risk.

Frequent contact with hazardous materials makes waste collection a potentially unhealthy activity. This article assesses the perception of waste management workers regarding work-related accidents in domestic and health service contexts in Brazil. Six focus groups were performed between June 2014 and August 2015. The aims of this study were to apprehend different aspects of the participants' health, workers' experiences of work-related accidents and perception of risks. Cuts and puncture injuries were reported most frequently in the line of work and were often considered as irrelevant. Immunization against hepatitis B was not common among all workers, which increases the risk of infection for those individuals. Finally, it is considered urgent to consolidate an inclusive space in which workers can have discussions on their health

Is waste collection associated with hepatitis B infection? A meta-analysis.

This meta-analysis, which is based on a previously published systematic review, aims to contribute to the scientific discussion on hepatitis B virus (HBV) infection in workers who are exposed to domestic and healthcare wastes. Publications were sought which had been made available on the data used by December 2013 and updated to December 2016. The quality of the included studies was assessed according to the guidelines of Loney et al. for the critical appraisal of studies on the prevalence or incidence of a health problem. To verify the presence of heterogeneity between the papers, we used the Chi-squared test based on a Q statistic. A funnel plot was used to test for publication bias. All included studies had across-sectional study design. The association between exposure to waste and positive serology for the HBV surface antigen (HBsAg) showed a significant association [odds ratio (OR) 1.89, 95% confidence interval (CI) 1.27-2.86; p = 0.0019]. The prevalence rates of HBsAg and anti-HBc seropositivity was 0.04 (95% CI 0.03-0.05) and 0.21 (95% CI 0.14-0.28), respectively (p <0.0001). We found no evidence of publication bias. The results of this meta-analysis indicate a statistically significant association between exposure to solid waste, whether healthcare or domestic, and positive HBV infection markers. Therefore, the working conditions of waste collectors should be analyzed more closely. Immunization against HBV is recommended as the chief preventive measure for all solid waste workers

Profile of patients diagnosed with AIDS at age 60 and above in Brazil, from 1980 until June 2009, compared to those diagnosed at age 18 to 59.

OBJECTIVES: The aim of this study was to learn more about people diagnosed with acquired immunodeficiency syndrome (AIDS) at age 60 and above in Brazil, and to compare them with people diagnosed at a younger age. METHODS: This study was based on the analysis of secondary data from the Brazilian AIDS Program. The study population consisted of people diagnosed with AIDS at age 60 and above. The comparison group was comprised of a 20% random sample of people diagnosed at age 18 to 59, frequency-matched by year of diagnosis. RESULTS: 544,846 cases of AIDS were reported in Brazil from 1980 until June 2009. Over 90% of cases were diagnosed between 18 and 59 years of age, and 13,657 (2.5%) at age 60 and above. The first case of AIDS among the elderly was reported in 1984. The comparison group consisted of 101,528 patients. Gender proportion was similar for both groups, and the proportion of people identified with AIDS after death in the Brazilian Mortality Information System (SIM) was 4% higher among the elderly. Both groups were also similar regarding the region of residence; a markedly higher proportion lived in Southeastern Brazil. Older people were more likely to have lower education and to have contracted AIDS by heterosexual contact, and less likely to be intravenous drug users. Male to female ratio among those diagnosed with AIDS at or above age 60 decreased over the years, in the same way as observed for the whole cohort. Mortality was higher among men in both groups. CD4 category (taken closest to the date of AIDS diagnosis) was very similar in both groups. CONCLUSION: The characteristics of the epidemic among the elderly show similarities to the younger group considering gender distribution and CD4 category, but differ regarding educational level and exposure category. Also, the elderly were more likely not to have their AIDS condition promptly diagnosed

AN EXPLORATION OF HEALTH AND SAFETY MANAGEMENT ISSUES IN NIGERIA’S EFFORT TO INDUSTRIALIZE

All organizations have a duty of care to ensure that employees and other persons who may be affected by the company’s undertakings remain safe at all times. This paper examines the background of occupational health and safety (OHS) practices in Nigeria, and highlights the importance of mitigating the OHS challenges identified from the moral, legal, financial and other dimensions. In the Nigerian context, the need to reinforce health and safety management (HSM) issues is exemplified from the unsavory recurrent reports of plane crashes in the aviation industry, high rates of motor vehicle accidents, numerous cases of death due to poisoning in the solid mineral sector, frequent accounts of disasters in the petroleum sector arising from oil spills, pipeline vandalism as well as accidents involving petroleum tankers. More effective and efficient management of these issues is a sine qua non to the industrialization efforts of an economy. Against the background of extant HS legislation in Nigeria, some reasons for the frequent violations of OHS standards and norms by the operators were identified as bribery and corruption in the system, the ‘Nigerian Factor’, inadequate funding of monitoring institutions, low level of education of employees as well as problems of persistent unemployment in the country. While recommending ways to mitigate the OHS flaws in Nigerian institutions, the relative duties and responsibilities of stakeholders in the OHS business were identified. The paper concludes by noting the importance of a virile HSM environment to the overall economic development and industrialization of the nation