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1.
BMJ Open ; 13(11): e064240, 2023 11 06.
Artigo em Inglês | MEDLINE | ID: mdl-37931969

RESUMO

OBJECTIVES: Systematic review of SARS-CoV-2 seroprevalence studies undertaken in the WHO European Region to measure pre-existing and cumulative seropositivity prior to the roll out of vaccination programmes. DESIGN: A systematic review of the literature. DATA SOURCES: We searched MEDLINE, EMBASE and the preprint servers MedRxiv and BioRxiv in the WHO 'COVID-19 Global literature on coronavirus disease' database using a predefined search strategy. Articles were supplemented with unpublished WHO-supported Unity-aligned seroprevalence studies and other studies reported directly to WHO Regional Office for Europe and European Centre for Disease Prevention and Control. ELIGIBILITY CRITERIA: Studies published before the widespread implementation of COVID-19 vaccination programmes in January 2021 among the general population and blood donors, at national and regional levels. DATA EXTRACTION AND SYNTHESIS: At least two independent researchers extracted the eligible studies; a third researcher resolved any disagreements. Study risk of bias was assessed using a quality scoring system based on sample size, sampling and testing methodologies. RESULTS: In total, 111 studies from 26 countries published or conducted between 1 January 2020 and 31 December 2020 across the WHO European Region were included. A significant heterogeneity in implementation was noted across the studies, with a paucity of studies from the east of the Region. Sixty-four (58%) studies were assessed to be of medium to high risk of bias. Overall, SARS-CoV-2 seropositivity prior to widespread community circulation was very low. National seroprevalence estimates after circulation started ranged from 0% to 51.3% (median 2.2% (IQR 0.7-5.2%); n=124), while subnational estimates ranged from 0% to 52% (median 5.8% (IQR 2.3%-12%); n=101), with the highest estimates in areas following widespread local transmission. CONCLUSIONS: The low levels of SARS-CoV-2 antibody in most populations prior to the start of vaccine programmes underlines the critical importance of targeted vaccination of priority groups at risk of severe disease, while maintaining reduced levels of transmission to minimise population morbidity and mortality.


Assuntos
COVID-19 , Humanos , SARS-CoV-2 , Vacinas contra COVID-19 , Estudos Soroepidemiológicos , Organização Mundial da Saúde
3.
Euro Surveill ; 19(6)2014 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-24556348

RESUMO

In the fifth season of Influenza Monitoring Vaccine Effectiveness in Europe (I-MOVE), we undertook a multicentre case-control study (MCCS) in seven European Union (EU) Member States to measure 2012/13 influenza vaccine effectiveness against medically attended influenza-like illness (ILI) laboratory confirmed as influenza. The season was characterised by substantial co-circulation of influenza B, A(H1N1)pdm09 and A(H3N2) viruses. Practitioners systematically selected ILI patients to swab ≤7 days of symptom onset. We compared influenza-positive by type/subtype to influenza-negative patients among those who met the EU ILI case definition. We conducted a complete case analysis using logistic regression with study as fixed effect and calculated adjusted vaccine effectiveness (AVE), controlling for potential confounders (age, sex, symptom onset week and presence of chronic conditions). We calculated AVE by type/subtype. Study sites sent 7,954 ILI/acute respiratory infection records for analysis. After applying exclusion criteria, we included 4,627 ILI patients in the analysis of VE against influenza B (1,937 cases), 3,516 for A(H1N1)pdm09 (1,068 cases) and 3,340 for influenza A(H3N2) (730 cases). AVE was 49.3% (95% confidence interval (CI): 32.4 to 62.0) against influenza B, 50.4% (95% CI: 28.4 to 65.6) against A(H1N1)pdm09 and 42.2% (95% CI: 14.9 to 60.7) against A(H3N2). Our results suggest an overall low to moderate AVE against influenza B, A(H1N1)pdm09 and A(H3N2), between 42 and 50%. In this season with many co-circulating viruses, the high sample size enabled stratified AVE by type/subtype. The low estimates indicate seasonal influenza vaccines should be improved to achieve acceptable protection levels.


Assuntos
Vírus da Influenza A Subtipo H1N1/imunologia , Vírus da Influenza A Subtipo H3N2/imunologia , Vírus da Influenza B/imunologia , Vacinas contra Influenza/imunologia , Influenza Humana/prevenção & controle , Avaliação de Resultados em Cuidados de Saúde , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Criança , Pré-Escolar , Europa (Continente)/epidemiologia , União Europeia , Feminino , Humanos , Lactente , Recém-Nascido , Vírus da Influenza A Subtipo H1N1/isolamento & purificação , Vírus da Influenza A Subtipo H3N2/isolamento & purificação , Vírus da Influenza B/isolamento & purificação , Vacinas contra Influenza/administração & dosagem , Influenza Humana/epidemiologia , Influenza Humana/virologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Pandemias/prevenção & controle , Vigilância da População , Estações do Ano , Sensibilidade e Especificidade , Vigilância de Evento Sentinela , Vacinação/estatística & dados numéricos , Adulto Jovem
4.
Euro Surveill ; 18(7): 3, 2013 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-23449183

RESUMO

We conducted a test-negative case-control study based in five European sentinel surveillance networks. The early 2012/13 adjusted influenza vaccine effectiveness was 78.2% (95% CI: 18.0 to 94.2) against influenza B, 62.1% (95% CI: -22.9 to 88.3%) against A(H1) pdm09, 41.9 (95% CI: -67.1 to 79.8) against A(H3N2) and 50.4% (95% CI: -20.7 to 79.6) against all influenza types in the target groups for vaccination. Efforts to improve influenza vaccines should continue to better protect those at risk of severe illness or complications.


Assuntos
Surtos de Doenças/prevenção & controle , Vírus da Influenza A Subtipo H1N1/imunologia , Vírus da Influenza A Subtipo H3N2/imunologia , Vírus da Influenza B/imunologia , Vacinas contra Influenza/administração & dosagem , Influenza Humana/prevenção & controle , Vacinação/estatística & dados numéricos , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Criança , Pré-Escolar , Surtos de Doenças/estatística & dados numéricos , Europa (Continente)/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Vírus da Influenza A Subtipo H1N1/isolamento & purificação , Vírus da Influenza A Subtipo H3N2/isolamento & purificação , Vírus da Influenza B/isolamento & purificação , Vacinas contra Influenza/imunologia , Influenza Humana/epidemiologia , Influenza Humana/virologia , Masculino , Pessoa de Meia-Idade , Estações do Ano , Vigilância de Evento Sentinela , Resultado do Tratamento , Adulto Jovem
5.
Euro Surveill ; 18(5)2013 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-23399425

RESUMO

Within the Influenza Monitoring Vaccine Effectiveness in Europe (I-MOVE) project we conducted a multicentre case­control study in eight European Union (EU) Member States to estimate the 2011/12 influenza vaccine effectiveness against medically attended influenza-like illness (ILI) laboratory-confirmed as influenza A(H3) among the vaccination target groups. Practitioners systematically selected ILI / acute respiratory infection patients to swab within seven days of symptom onset. We restricted the study population to those meeting the EU ILI case definition and compared influenza A(H3) positive to influenza laboratory-negative patients. We used logistic regression with study site as fixed effect and calculated adjusted influenza vaccine effectiveness (IVE), controlling for potential confounders (age group, sex, month of symptom onset, chronic diseases and related hospitalisations, number of practitioner visits in the previous year). Adjusted IVE was 25% (95% confidence intervals (CI): -6 to 47) among all ages (n=1,014), 63% (95% CI: 26 to 82) in adults aged between 15 and 59 years and 15% (95% CI: -33 to 46) among those aged 60 years and above. Adjusted IVE was 38% (95%CI: -8 to 65) in the early influenza season (up to week 6 of 2012) and -1% (95% CI: -60 to 37) in the late phase. The results suggested a low adjusted IVE in 2011/12. The lower IVE in the late season could be due to virus changes through the season or waning immunity. Virological surveillance should be enhanced to quantify change over time and understand its relation with duration of immunological protection. Seasonal influenza vaccines should be improved to achieve acceptable levels of protection.


Assuntos
Vírus da Influenza A Subtipo H3N2/imunologia , Vírus da Influenza A Subtipo H3N8/imunologia , Vacinas contra Influenza/administração & dosagem , Influenza Humana/epidemiologia , Influenza Humana/prevenção & controle , Vacinação/estatística & dados numéricos , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Criança , Pré-Escolar , Intervalos de Confiança , Europa (Continente)/epidemiologia , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Lactente , Recém-Nascido , Vírus da Influenza A Subtipo H3N2/isolamento & purificação , Vírus da Influenza A Subtipo H3N8/isolamento & purificação , Vacinas contra Influenza/imunologia , Influenza Humana/imunologia , Influenza Humana/virologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Nasofaringe/virologia , Nariz/virologia , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Estações do Ano , Vigilância de Evento Sentinela , Resultado do Tratamento , Adulto Jovem
6.
Euro Surveill ; 17(39)2012 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-23041022

RESUMO

Since 2007, the European Centre for Disease Prevention and Control (ECDC) has supported I-MOVE (influenza monitoring vaccine effectiveness), a network to monitor seasonal and pandemic influenza vaccine effectiveness (IVE) in the European Union (EU) and European Economic Area (EEA). To set up I-MOVE, we conducted a literature review and a survey on methods used in the EU/EEA to measure IVE and held expert consultations to guide the development of generic protocols to estimate IVE in the EU/EEA. On the basis of these protocols, from the 2008/09 season, I-MOVE teams have conducted multicentre case­control, cohort and screening method studies, undertaken within existing sentinel influenza surveillance systems. The estimates obtained include effectiveness against medically attended laboratory-confirmed influenza and are adjusted for the main confounding factors described in the literature. I-MOVE studies are methodologically sound and feasible: the availability of various study designs, settings and outcomes provides complementary evidence, facilitating the interpretation of the results. The IVE estimates have been useful in helping to guide influenza vaccine policy at national and European level. I-MOVE is a unique platform for exchanging views on methods to estimate IVE. The scientific knowledge and experience in practical, managerial and logistic issues can be adapted to monitor surveillance of the effectiveness of other vaccines.


Assuntos
União Europeia/organização & administração , Vírus da Influenza A Subtipo H1N1/imunologia , Vacinas contra Influenza/administração & dosagem , Influenza Humana/prevenção & controle , Vacinação/normas , Adolescente , Adulto , Estudos de Casos e Controles , Criança , Estudos de Coortes , Feminino , Humanos , Vírus da Influenza A Subtipo H1N1/isolamento & purificação , Influenza Humana/imunologia , Influenza Humana/virologia , Masculino , Programas de Rastreamento/métodos , Programas de Rastreamento/normas , Pessoa de Meia-Idade , Modelos Estatísticos , Vigilância da População , Estações do Ano , Espanha/epidemiologia , Especificidade da Espécie , Fatores de Tempo , Resultado do Tratamento
7.
Euro Surveill ; 17(15)2012 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-22516046

RESUMO

To provide an early estimate of 2011/12 influenza vaccine effectiveness (VE), we conducted a multicentre case-control study based on seven sentinel surveillance networks. We included influenza-like illness cases up to week 7/2012 from the vaccination target groups, swabbed less than eight days after symptom onset. Laboratory-confirmed influenza A(H3) cases were compared to negative controls. Adjusted VE was 43% (95% confidence interval: -0.4 to 67.7), suggesting low to moderate VE against influenza A(H3) in the early 2011/12 season.


Assuntos
Surtos de Doenças/prevenção & controle , Vírus da Influenza A Subtipo H1N1/imunologia , Vacinas contra Influenza/administração & dosagem , Influenza Humana/prevenção & controle , Vacinação/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Criança , Pré-Escolar , Intervalos de Confiança , Surtos de Doenças/estatística & dados numéricos , Europa (Continente)/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Vírus da Influenza A Subtipo H1N1/isolamento & purificação , Vacinas contra Influenza/imunologia , Influenza Humana/epidemiologia , Influenza Humana/virologia , Masculino , Pessoa de Meia-Idade , Estações do Ano , Vigilância de Evento Sentinela , Resultado do Tratamento , Adulto Jovem
8.
Euro Surveill ; 16(11)2011 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-21435329

RESUMO

We present early estimates (up to week 4 of 2011) of the 2010/11 seasonal influenza vaccine effectiveness in preventing medically attended influenza-like illness(ILI) laboratory confirmed as influenza. Practitioners from seven European sentinel networks systematically swabbed ILI patients. We included patients meeting the European Union ILI case definition and swabbed less than eight days after symptom onset. Laboratory-confirmed influenza cases were compared with negative controls. The adjusted vaccine effectiveness was 42.3% (95% CI: -7.3 to 69.0%), suggesting moderate protection of the seasonal vaccine.


Assuntos
Surtos de Doenças , Vírus da Influenza A Subtipo H1N1/imunologia , Vacinas contra Influenza/administração & dosagem , Influenza Humana/imunologia , Influenza Humana/prevenção & controle , Vacinação/estatística & dados numéricos , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Criança , Surtos de Doenças/prevenção & controle , Surtos de Doenças/estatística & dados numéricos , Europa (Continente)/epidemiologia , União Europeia , Feminino , Humanos , Lactente , Recém-Nascido , Vacinas contra Influenza/imunologia , Influenza Humana/epidemiologia , Influenza Humana/virologia , Masculino , Pessoa de Meia-Idade , Vigilância de Evento Sentinela , Resultado do Tratamento , Adulto Jovem
9.
Arch. venez. farmacol. ter ; 30(1): 1-13, 2011. tab
Artigo em Espanhol | LILACS | ID: lil-699593

RESUMO

El Consenso Venezolano de Enfermedad por Reflujo Gastroesófágico (ERGE) se realizó con el objeto de proveer guías para mejorar la identificación, el diagnóstico y el tratamiento de este trastorno en el país. Los coordinadores establecieron las líneas de consenso, basado en una revisión sistemática de la literatura médica de los últimos 15 años a partir de 1995. Participaron 55 miembros con el aval de sus respectivas cátedras y sociedades locales de gastroenterología. Éstos revisaron y presentaron los temas con sus niveles de evidencia y grados de recomendación para discutirlos y votarlos en una reunión plenaria. Tras un informe final de los miembros, los coordinadores prepararon las declaraciones finales. El consenso concluyó que la enfermedad por reflujo gastroesofágico tiene una prevalencia estimada del 11,54% en Venezuela, a predominio del sexo femenino (Grado B). El diagnóstico es fundamentalmente clínico, basado en la presencia de síntomas típicos y/o atípicos, e incluso síntomas de alarma que sugieren alguna complicación (Grado B). La endoscopia es importante en la investigación de la presencia de esofagitis de reflujo y laringitis de reflujo (Grado B). Las otras pruebas diagnósticas como lo son la pHmetría esofágica de 24 horas con o sin impedancia intraluminal multicanal son importantes en los pacientes que no tienen esofagitis, tienen síntomas atípicos o cuando hay falla en la respuesta al tratamiento médico (Grado B). La radiología, manometría esofágica y el ultrasonido endoscópico no están indicados en el diagnóstico de la ERGE (Grado B). El objetivo del tratamiento es reducir la exposición ácida en el esófago y con esto: aliviar los síntomas, cicatrizar las lesiones en la mucosa esofágica, prevenir la recurrencia y las complicaciones. Los inhibidores de bomba de protones deberían ser la primera opción en el tratamiento en el síndrome de ERGE y en la esofagitis por reflujo tanto en la fase aguda como durante el mantenimiento...


The Venezuelan Gastroesophageal Reflux Disease (GERD) Consensus was carried out in order to provide guidelines to improve the identification, diagnosis and treatment of this illness in Venezuela.  The coordinators established the consensuslines, based on a systematic revision of the medical literature of the last 15 years starting from 1995. 55 physicians participated with the support of their respective medical schools and local societies. They revised and presented the topics with their respective evidence levels and recommendation grades to discuss and vote them in a plenary meeting. After a final report of the members, the coordinators prepared the definitive declarations. The consensus concluded that GERD prevalence in Venezuela is 11,54%, higher in women than men (Grade B). The diagnosis is mainly clinical, based on the presence of typical and/or atypical symptoms and alarm symptoms that may suggest the presence of complications (Grade B). Endoscopy is important when reflux esophagitis and laryngitis are present (Grade B). Other diagnostic tests as ambulatory 24 hours pH monitoring with or without multichannel intraluminal impedance are important in patients without esophagitis, with atypical symptoms or when there is flaw in the answer to the medical treatment (Grade B). Radiology, esophageal manometry and endoscopic ultrasonography are not indicated in the diagnosis of GERD (Grade B). The objective of the treatment is to reduce the presence of acid in the esophagus and consequently: alleviate the symptoms and heal lesions in the esophagus mucosa to prevent recurrence and complications. Proton pump inhibitors should be the first option drug in the treatment of GERD syndrome andin esophagitis during the acute and the maintenance phase using standard or half dose (Grade A). So far, pokinetics are drugs with a limited use in GERD patients; they stimulate the esophagus/gastric motility...


Assuntos
Humanos , Inibidores da Bomba de Prótons , Refluxo Gastroesofágico/cirurgia , Refluxo Gastroesofágico/diagnóstico , Refluxo Gastroesofágico/terapia , Educação Médica , Faculdades de Medicina
10.
Euro Surveill ; 14(44)2009 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-19941774

RESUMO

Within I-MOVE (European programme to monitor seasonal and pandemic influenza vaccine effectiveness (IVE)) five countries conducted IVE pilot case-control studies in 2008-9. One hundred and sixty sentinel general practitioners (GP) swabbed all elderly consulting for influenza-like illness (ILI). Influenza confirmed cases were compared to influenza negative controls. We conducted a pooled analysis to obtain a summary IVE in the age group of >or=65 years. We measured IVE in each study and assessed heterogeneity between studies qualitatively and using the I2 index. We used a one-stage pooled model with study as a fixed effect. We adjusted estimates for age-group, sex, chronic diseases, smoking, functional status, previous influenza vaccinations and previous hospitalisations. The pooled analysis included 138 cases and 189 test-negative controls. There was no statistical heterogeneity (I2=0) between studies but ILI case definition, previous hospitalisations and functional status were slightly different. The adjusted IVE was 59.1% (95% CI: 15.3-80.3%). IVE was 65.4% (95% CI: 15.6-85.8%) in the 65-74, 59.6% (95% CI: -72.6 -90.6%) in the age group of >or=75 and 56.4% (95% CI: -0.2-81.3%) for A(H3). Pooled analysis is feasible among European studies. The variables definitions need further standardisation. Larger sample sizes are needed to achieve greater precision for subgroup analysis. For 2009-10, I-MOVE will extend the study to obtain early IVE estimates in groups targeted for pandemic H1N1 influenza vaccination.


Assuntos
Vírus da Influenza A Subtipo H1N1/imunologia , Vacinas contra Influenza/normas , Influenza Humana/epidemiologia , Vigilância da População/métodos , Idoso , Estudos de Casos e Controles , Surtos de Doenças/estatística & dados numéricos , Europa (Continente)/epidemiologia , Medicina de Família e Comunidade , Feminino , Humanos , Vírus da Influenza A Subtipo H1N1/isolamento & purificação , Influenza Humana/prevenção & controle , Entrevistas como Assunto , Masculino , Projetos Piloto , Avaliação de Programas e Projetos de Saúde
11.
Epidemiol Infect ; 137(7): 950-6, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19134236

RESUMO

Diarrhoeal illnesses are the most frequent of notifiable diseases in Aragon. Physicians notify diarrhoea cases with presumed infectious origin on a weekly basis. Following an increase in 2005-2006, we aimed to identify the responsible organism(s) in order to inform control measures. We described seasonality of diarrhoea notifications for 1998-2004 and 2005-2006. We calculated correlations between diarrhoea notifications and enteric pathogens diagnosed in two Aragonese laboratories, and applied linear regression using coefficients of determination (r2). In 2005-2006 the winter peak of diarrhoea notifications increased from 2494 to 3357 weekly cases (34.6%) and the peak in Rotavirus diagnoses from 15 to 39 weekly cases. The correlation of diarrhoea notifications with Rotavirus was 0.05 in 1998-2004 and 0.42 in 2005-2006. The model for 1998-2004 included Salmonella enterica, Giardia lamblia and Clostridium difficile (r2=0.08) and for 2005-2006 Rotavirus and Astrovirus (r2=0.24). Our results suggest that Rotavirus contributed to the increase of diarrhoea notifications. We recommend determining the disease burden of Rotavirus in order to guide vaccination policies.


Assuntos
Diarreia/epidemiologia , Diarreia/virologia , Gastroenteropatias/microbiologia , Infecções por Rotavirus/epidemiologia , Infecções por Rotavirus/virologia , Infecções Bacterianas/epidemiologia , Infecções Bacterianas/microbiologia , Gastroenteropatias/parasitologia , Humanos , Doenças Parasitárias/epidemiologia , Doenças Parasitárias/parasitologia , Vigilância da População , Espanha/epidemiologia , Fatores de Tempo
12.
Euro Surveill ; 13(43)2008 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-18947520

RESUMO

Estimating influenza vaccine effectiveness (IVE) early in the season helps measuring the consequences of a mismatch between the vaccine and the circulating strain and guiding alternative or complementary interventions. The European Centre for Disease Prevention and Control is funding a project to develop pilot studies to monitor IVE in the Member States (MS) of the European Union and European Economic Area (EU/EEA) during seasonal and pandemic influenza. To identify key methodological and practical issues in developing protocols for pilot studies, we conducted a survey among EU/EEA MS, a literature review on IVE methods, and consultations of experts. The survey and literature review highlighted the variety of the data sources used to estimate IVE and the difficulty to interpret data on IVE, which varies with age, risk group, outcome specificity and virus-vaccine mismatch. We also found that negative and positive confounding can bias IVE. The experts consultations lead to the following recommendations: to measure IVE in the same population in various seasons; to control for positive/negative confounding (including pre- and post-influenza season IVE estimates); and to include laboratory confirmation as outcome in various study designs. In the 2008-9 influenza season, two cohort studies using general practitioners' databases and six case control studies will be piloted in EU/EEA MS and will adhere to the above recommendations. The pilot studies will be the basis for the development of robust methods to monitor IVE in EU/EEA MS.


Assuntos
Vacinas contra Influenza/normas , Influenza Humana/prevenção & controle , Vigilância da População/métodos , Estações do Ano , Surtos de Doenças/prevenção & controle , Europa (Continente)/epidemiologia , União Europeia , Humanos , Influenza Humana/epidemiologia , Influenza Humana/imunologia , Entrevistas como Assunto , Inquéritos e Questionários , Resultado do Tratamento
13.
Euro Surveill ; 9(5): 24-6, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-15208469

RESUMO

The Republic of Serbia, with WHO support, has implemented an early warning system (ALERT) for priority communicable diseases, to complement the routine surveillance system which notifies individual confirmed cases. The results of its evaluation, conducted one year after implementation is presented here. ALERT relies on notification of 11 syndromes by primary care facilities. Data is analysed weekly at district level and transmitted to national epidemiologists. ALERT is perceived to be a simple and flexible tool. Acceptability is higher at national level than at district level. Some districts perceive ALERT as a parallel system poorly connected to control measures. Sensitivity of ALERT in detecting cases of meningitis is 93%, and 37% for cases of hepatitis. Retrospective analysis of ALERT data identified 9 outbreaks, 5 of which had been recognized by epidemiologists. ALERT was the timeliest system for detecting 4 outbreaks identified by both systems. ALERT was useful for triggering timely investigation and control of outbreaks of hantavirus and salmonellosis and for detecting the start of the influenza season. However, ALERT did not detect clusters of brucellosis and tularaemia targeted by the unexplained fever syndrome. This evaluation underlined the need for a global review of surveillance activities when implementing new components such as ALERT. While control measures based on notification of individual confirmed cases are well understood and implemented, the investigation and verification process that should result from an increase in ALERT syndromes is not fully understood. Field epidemiology training programmes, such as the EPIET programme, are best suited to bring about this change of perspective.


Assuntos
Controle de Doenças Transmissíveis/normas , Doenças Transmissíveis/epidemiologia , Notificação de Doenças/normas , Surtos de Doenças/estatística & dados numéricos , Vigilância da População/métodos , Controle de Doenças Transmissíveis/métodos , Humanos , Desenvolvimento de Programas , Sensibilidade e Especificidade , Vigilância de Evento Sentinela , Iugoslávia/epidemiologia
14.
Euro Surveill ; 9(5): 1-2, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-29183456

RESUMO

The Republic of Serbia, with WHO support, has implemented an early warning system (ALERT) for priority communicable diseases, to complement the routine surveillance system which notifies individual confirmed cases. The results of its evaluation, conducted one year after implementation is presented here. ALERT relies on notification of 11 syndromes by primary care facilities. Data is analysed weekly at district level and transmitted to national epidemiologists. ALERT is perceived to be a simple and flexible tool. Acceptability is higher at national level than at district level. Some districts perceive ALERT as a parallel system poorly connected to control measures. Sensitivity of ALERT in detecting cases of meningitis is 93%, and 37% for cases of hepatitis. Retrospective analysis of ALERT data identified 9 outbreaks, 5 of which had been recognized by epidemiologists. ALERT was the timeliest system for detecting 4 outbreaks identified by both systems. ALERT was useful for triggering timely investigation and control of outbreaks of hantavirus and salmonellosis and for detecting the start of the influenza season. However, ALERT did not detect clusters of brucellosis and tularaemia targeted by the unexplained fever syndrome. This evaluation underlined the need for a global review of surveillance activities when implementing new components such as ALERT. While control measures based on notification of individual confirmed cases are well understood and implemented, the investigation and verification process that should result from an increase in ALERT syndromes is not fully understood. Field epidemiology training programmes, such as the EPIET programme, are best suited to bring about this change of perspective.

15.
Med Trop (Mars) ; 62(4): 391-5, 2002.
Artigo em Francês | MEDLINE | ID: mdl-12534177

RESUMO

Humanitarian emergencies are complex situations that usually occur after warfare or social upheavals. They result in a dramatic increase in morbidity and mortality in the affected population. Organizations that undertake management of humanitarian emergencies must be prepared to provide comprehensive services covering all aspects of public health including preliminary evaluation, mass vaccination, water and sanitation, food supply and nutrition, shelter, medical care, control of communicable diseases, personnel training, and logistic coordination. Epidemiological surveillance is an integral part of a full-service approach to humanitarian action that should be included in the preliminary evaluation. Epidemiology is a powerful tool for detecting any health problems that might further jeopardize the victim population. By allowing measurement of the impact of humanitarian action, epidemiological data also provides a means of verifying that the victims are benefiting from aid operations. Implementation of a surveillance system should be given high priority during the start-up of a humanitarian operation. The system must have the simplicity and flexibility necessary to adapt changing, unstable situations as well as high sensitivity necessary for early detection of epidemic outbreaks.


Assuntos
Planejamento em Desastres/organização & administração , Serviços Médicos de Emergência/organização & administração , Cooperação Internacional , Vigilância da População/métodos , Socorro em Desastres/organização & administração , Altruísmo , Controle de Doenças Transmissíveis , Humanos , Serviços de Informação/organização & administração , Sistemas de Informação/organização & administração , Objetivos Organizacionais , Fatores de Risco , Saneamento , Guerra
16.
Rev Epidemiol Sante Publique ; 50(6): 509-17, 2002 Dec.
Artigo em Francês | MEDLINE | ID: mdl-12515921

RESUMO

BACKGROUND: Four cases of Crohn disease (CD) were diagnosed between 1990 and 1997 in children living in the same area in the Indre-et-Loire district (county A). The local population raised the hypothesis that an environmental source could be responsible for these cases. An investigation was carried out to assess the excess of cases and to identify their possible determinants. METHODS: A case was defined as any new case of CD (European definition) that occurred between 1989 and 1998 in county A or in the adjacent county of the Vienne district. Case finding was done by contacting all hospital services, pediatricians and gastro-enterologists in the 2 districts. A Standardized Incidence Rate (SIR) was calculated for sex and age in adults and children using data from the Inflammatory Bowel Registry of northern France. Statistical significance was assessed by a test taking into account small samples. A descriptive study was carried out among pediatric cases. RESULTS: Four pediatric cases and four adults were identified, all from county A. The SIR in adults was 0,45 (95% Confidence Interval [95% CI: 0.12-1.15). In children, the global SIR was 8,51 (95% CI: 2.29-21.79) and 19,05 (95% CI: 5.12-48.70) in county A. The descriptive study did not identify any exposure leading to a possible hypothesis concerning the origin of the cases. CONCLUSION: This study has shown that the incidence of CD among children of the area was greater than observed in France and has permitted to establish a close relationship with the affected families, to implement a social approach to the problem and to limit rumors. It illustrates the interest of a systematic stepwise approach, which takes into consideration the anxiety of the local community. Cluster investigation should be integrated as part of the public health agencies activities. However, in most cases, despite an excess risk, results do not allow to conclude in terms of etiology.


Assuntos
Doença de Crohn/epidemiologia , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Análise por Conglomerados , Estudos de Coortes , Doença de Crohn/etiologia , Feminino , França/epidemiologia , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade
17.
Addiction ; 96(4): 597-606, 2001 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11300963

RESUMO

AIMS: To describe syringe exchange programme attendees and their injection practices. DESIGN: Cross-sectional study (one week in 1998). Data were collected through a standardized questionnaire. SETTING: 60/74 syringe exchange programmes (SEPs) in France. PARTICIPANTS: Clients requesting syringes in 60 SEPs. MEASUREMENTS: Self-reports of drug use, injecting behaviour, sexual behaviour, serological status (HIV, HBV, HCV). Prevalence of unsafe injecting practices in the previous month such as: syringe sharing; and sharing other injection paraphernalia. FINDINGS: 1004 questionnaires were collected (response rate: 50%). The mean age of respondents was 30 years, and 70% were males. Among individuals tested, HIV reported prevalence was 19.2%, HCV 58.4% and HBV 20.8%. The mean duration of drug use was 11 years. Eighty-five percent were polydrug users and buprenorphine high-dosage was the substance most used (73%). In the previous month, 45% of the participants had re-used a syringe, 93% injected at least daily (mean 3.6 injections per day), 18% shared a syringe and 71% shared injection paraphernalia. In multivariate analyses, unsafe injecting practices were associated with heroin and cocaine use and with living in a couple. The cluster analysis identified five categories of IDUs: users of buprenorphine-HD (45% of the responders), morphine-sulphate (17%), benzodiazepines and other legal drugs (13%), methadone associated with other legal drugs (13%) and crack-cocaine (13%). The buprenorphine-HD group had better social status and safer injection practices. CONCLUSIONS: In France, despite an increase in the accessibility to syringes and substitution treatments, unsafe injecting practices persist among SEP attenders. Interventions should stress the importance of using sterile material for each injection, even with a steady sex partner.


Assuntos
Infecções por HIV/epidemiologia , Uso Comum de Agulhas e Seringas/efeitos adversos , Programas de Troca de Agulhas , Assunção de Riscos , Abuso de Substâncias por Via Intravenosa/epidemiologia , Adulto , Estudos Transversais , Feminino , França/epidemiologia , Humanos , Masculino , Fatores de Risco , Inquéritos e Questionários
18.
Am J Epidemiol ; 152(10): 934-9, 2000 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-11092435

RESUMO

A retrospective cohort study was carried out to investigate concurrent outbreaks of gastroenteritis and typhoid fever that occurred among guests of a supper on a floating restaurant in France in March 1998. A total of 133 guests (attack rate = 90%) reported gastroenteritis within 12 days of the supper. Twenty-seven guests developed typhoid fever (attack rate = 18%) of whom 15 were confirmed by stool or blood culture. All patients with typhoid fever had had an initial gastroenteritis. The results suggest that the same food items served during the supper, chicken and rice, were the vehicles of both gastroenteritis and typhoid fever, but the authors could not determine the specific source of infection. Initial gastroenteritis has been described as a clinical manifestation of typhoid fever but whether or not these two syndromes (gastroenteritis and typhoid fever) were due to the same etiology remains unclear in this outbreak.


Assuntos
Surtos de Doenças/estatística & dados numéricos , Gastroenterite/epidemiologia , Restaurantes , Febre Tifoide/epidemiologia , Adolescente , Adulto , Estudos de Coortes , Fezes/microbiologia , Feminino , Microbiologia de Alimentos , França/epidemiologia , Gastroenterite/etiologia , Gastroenterite/microbiologia , Humanos , Masculino , Estudos Retrospectivos , Fatores de Risco , Intoxicação Alimentar por Salmonella/epidemiologia , Intoxicação Alimentar por Salmonella/microbiologia , Intoxicação Alimentar por Salmonella/transmissão , Salmonella typhi/isolamento & purificação , Fatores de Tempo , Febre Tifoide/microbiologia , Febre Tifoide/transmissão
19.
Euro Surveill ; 4(9): 92-95, 1999 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-12631890

RESUMO

Albania, a country with 3.5 million inhabitants, is facing an economic and social crisis. The average per capita income is less than US$1000 per year. Since 1995 unemployment has increased by 2.7%. Poverty and migration are major constraints of the societ

20.
Euro Surveill ; 3(10): 93-96, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12631754

RESUMO

The aim of the European Sero-Epidemiology Network (ESEN) is to coordinate and harmonise the serological surveillance of immunity to vaccine preventable diseases in eight countries in Europe (Denmark, England, France, Germany, Italy, the Netherlands, Finla

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