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1.
BMC Biol ; 21(1): 76, 2023 04 11.
Artigo em Inglês | MEDLINE | ID: mdl-37038177

RESUMO

BACKGROUND: Escherichia coli is an opportunistic pathogen which colonizes various host species. However, to what extent genetic lineages of E. coli are adapted or restricted to specific hosts and the genomic determinants of such adaptation or restriction is poorly understood. RESULTS: We randomly sampled E. coli isolates from four countries (Germany, UK, Spain, and Vietnam), obtained from five host species (human, pig, cattle, chicken, and wild boar) over 16 years, from both healthy and diseased hosts, to construct a collection of 1198 whole-genome sequenced E. coli isolates. We identified associations between specific E. coli lineages and the host from which they were isolated. A genome-wide association study (GWAS) identified several E. coli genes that were associated with human, cattle, or chicken hosts, whereas no genes associated with the pig host could be found. In silico characterization of nine contiguous genes (collectively designated as nan-9) associated with the human host indicated that these genes are involved in the metabolism of sialic acids (Sia). In contrast, the previously described sialic acid regulon known as sialoregulon (i.e. nanRATEK-yhcH, nanXY, and nanCMS) was not associated with any host species. In vitro growth experiments with a Δnan-9 E. coli mutant strain, using the sialic acids 5-N-acetylneuraminic acid (Neu5Ac) and N-glycolylneuraminic acid (Neu5Gc) as sole carbon source, showed impaired growth behaviour compared to the wild-type. CONCLUSIONS: This study provides an extensive analysis of genetic determinants which may contribute to host specificity in E. coli. Our findings should inform risk analysis and epidemiological monitoring of (antimicrobial resistant) E. coli.


Assuntos
Infecções por Escherichia coli , Escherichia coli , Animais , Bovinos , Humanos , Suínos , Escherichia coli/genética , Estudo de Associação Genômica Ampla , Infecções por Escherichia coli/veterinária , Genômica , Ácidos Siálicos/metabolismo
2.
Infection ; 51(4): 805-811, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37129842

RESUMO

The SARS-CoV-2 pandemic has highlighted the importance of viable infection surveillance and the relevant infrastructure. From a German perspective, an integral part of this infrastructure, genomic pathogen sequencing, was at best fragmentary and stretched to its limits due to the lack or inefficient use of equipment, human resources, data management and coordination. The experience in other countries has shown that the rate of sequenced positive samples and linkage of genomic and epidemiological data (person, place, time) represent important factors for a successful application of genomic pathogen surveillance. Planning, establishing and consistently supporting adequate structures for genomic pathogen surveillance will be crucial to identify and combat future pandemics as well as other challenges in infectious diseases such as multi-drug resistant bacteria and healthcare-associated infections. Therefore, the authors propose a multifaceted and coordinated process for the definition of procedural, legal and technical standards for comprehensive genomic pathogen surveillance in Germany, covering the areas of genomic sequencing, data collection and data linkage, as well as target pathogens. A comparative analysis of the structures established in Germany and in other countries is applied. This proposal aims to better tackle epi- and pandemics to come and take action from the "lessons learned" from the SARS-CoV-2 pandemic.


Assuntos
COVID-19 , Infecção Hospitalar , Humanos , Pandemias/prevenção & controle , COVID-19/epidemiologia , COVID-19/prevenção & controle , SARS-CoV-2/genética , Genômica
3.
Epidemiol Infect ; 151: e38, 2023 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-36789785

RESUMO

After the winter of 2021/2022, the coronavirus disease 2019 (COVID-19) pandemic had reached a phase where a considerable number of people in Germany have been either infected with a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant, vaccinated or both, the full extent of which was difficult to estimate, however, because infection counts suffer from under-reporting, and the overlap between the vaccinated and recovered subpopulations is unknown. Yet, reliable estimates regarding population-wide susceptibility were of considerable interest: Since both previous infection and vaccination reduce the risk of severe disease, a low share of immunologically naïve individuals lowers the probability of further severe outbreaks, given that emerging variants do not escape the acquired susceptibility reduction. Here, we estimate the share of immunologically naïve individuals by age group for each of the sixteen German federal states by integrating an infectious-disease model based on weekly incidences of SARS-CoV-2 infections in the national surveillance system and vaccine uptake, as well as assumptions regarding under-ascertainment. We estimate a median share of 5.6% of individuals in the German population have neither been in contact with vaccine nor any variant up to 31 May 2022 (quartile range [2.5%-8.5%]). For the adult population at higher risk of severe disease, this figure is reduced to 3.8% [1.6%-5.9%] for ages 18-59 and 2.1% [1.0%-3.4%] for ages 60 and above. However, estimates vary between German states mostly due to heterogeneous vaccine uptake. Excluding Omicron infections from the analysis, 16.3% [14.1%-17.9%] of the population in Germany, across all ages, are estimated to be immunologically naïve, highlighting the large impact the first two Omicron waves had until the beginning of summer in 2022. The method developed here might be useful for similar estimations in other countries or future outbreaks of other infectious diseases.


Assuntos
COVID-19 , SARS-CoV-2 , Adulto , Humanos , Pessoa de Meia-Idade , Lactente , COVID-19/epidemiologia , Alemanha/epidemiologia , Surtos de Doenças , Pandemias , Anticorpos Antivirais
4.
Eur Child Adolesc Psychiatry ; 32(4): 575-588, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34636964

RESUMO

BACKGROUND: The COVID-19 pandemic has disrupted the lives of children and adolescents worldwide. The German COPSY study is among the first population-based longitudinal studies to examine the mental health impact of the pandemic. The objective of the study was to assess changes in health-related quality of life (HRQoL) and mental health in children and adolescents and to identify the associated risk and resource factors during the pandemic. METHODS: A nationwide longitudinal survey was conducted with two waves during the pandemic (May/June 2020 and December 2020/January 2021). In total, n = 1923 children and adolescents aged 7 to 17 years and their parents participated (retention rate from wave 1 to wave 2: 85%). The self-report and parent-proxy surveys assessed HRQoL (KIDSCREEN-10), mental health problems (SDQ with the subscales emotional problems, conduct problems, hyperactivity, and peer problems), anxiety (SCARED), depressive symptoms (CES-DC, PHQ-2) and psychosomatic complaints (HBSC-SCL). Mixed model panel regression analyses were conducted to examine longitudinal changes in mental health and to identify risk and resource factors. RESULTS: The HRQoL of children and adolescents decreased during the pandemic, and emotional problems, peer-related mental health problems, anxiety, depressive and psychosomatic symptoms increased over time, however the change in global mental health problems from wave 1 to wave 2 was not significant, and some changes were negligible. Socially disadvantaged children and children of mentally burdened parents were at particular risk of impaired mental health, while female gender and older age were associated with fewer mental health problems. A positive family climate and social support supported the mental health of children and adolescents during the pandemic. DISCUSSION: Health promotion, prevention and intervention strategies could support children and adolescents in coping with the pandemic and protect and maintain their mental health.


Assuntos
COVID-19 , Saúde Mental , Humanos , Criança , Adolescente , Feminino , Qualidade de Vida , Pandemias , Inquéritos Epidemiológicos , COVID-19/epidemiologia
5.
Public Health ; 219: 35-38, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37098323

RESUMO

OBJECTIVES: Research shows that there is an increased risk of SARS-CoV-2 infection in migrants and ethnic minorities. However, increasing evidence indicates that socio-economic factors, such as employment, education and income, contribute to the association between migrant status and SARS-CoV-2 infection. This study aimed to examine the association between migrant status and the risk of SARS-CoV-2 infection in Germany and to discuss potential explanations for these associations. STUDY DESIGN: This was a cross-sectional study. METHODS: Data from the German COVID-19 Snapshot Monitoring online survey were analysed, and hierarchical multiple linear regression models were used to calculate the probabilities of self-reported SARS-CoV-2 infection. Predictor variables were integrated in a stepwise method as follows: (1) migrant status (defined by own or parental country of birth other than Germany); (2) gender, age and education; (3) household size; (4) household language; and (5) occupation in the health sector, including an interaction term of migrant status (yes) and occupation in the health sector (yes). RESULTS: Of 45,858 participants, 3.5% reported a SARS-CoV-2 infection, and 16% were migrants. Migrants, participants in large households, those speaking a language other than German in their household and those working in the health sector were more likely to report SARS-CoV-2 infection. The probability of reporting SARS-CoV-2 infection was 3.95 percentage points higher for migrants than non-migrants; this probability decreased when integrating further predictor variables. The strongest association of reporting a SARS-CoV-2 infection was observed for migrants working in the health sector. CONCLUSIONS: Migrants and health sector employees, and especially migrant health workers, are at an increased risk of SARS-CoV-2 infection. The results show that the risk of SARS-CoV-2 infection is determined by living and working conditions rather than migrant status.


Assuntos
COVID-19 , Migrantes , Humanos , Estudos Transversais , COVID-19/epidemiologia , SARS-CoV-2 , Alemanha/epidemiologia
6.
Gesundheitswesen ; 85(1): 36-38, 2023 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-35562062

RESUMO

AIM OF THE STUDY: There is a lack of knowledge about attitudes to influenza vaccination in Germany in 2021/2022. Based on the COSMO survey ("COVID-19 Snapshot Monitoring"), the aim of this study was to shed some light on this topic. METHODS: Wave 49 (August 10 and 11, 2021) of the COSMO survey (n=967; Germany-wide non-probabilistic quota sample; 18 to 74 years). RESULTS: This year, about one-third of respondents (and health care workers) plan to get a flu shot, and among the at-risk group of people aged 60 and older (up to 74 years in our sample), more than half. Correlates (such as gender: women with a lower likelihood of a planned flu shot) were identified. CONCLUSION: Physicians should inform women in particular about the advantages of influenza vaccination, especially during the pandemic, and communicate data on the proven protective effect of influenza vaccination as convincingly as possible (e. g., using existing brochures).


Assuntos
COVID-19 , Vacinas contra Influenza , Influenza Humana , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Influenza Humana/epidemiologia , Influenza Humana/prevenção & controle , Alemanha/epidemiologia , Aceitação pelo Paciente de Cuidados de Saúde , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos e Questionários , Vacinação , Vacinas contra Influenza/uso terapêutico
7.
Artigo em Alemão | MEDLINE | ID: mdl-37140603

RESUMO

Societal health is facing a number of new challenges, largely driven by ongoing climate change, demographic ageing, and globalization. The One Health approach links human, animal, and environmental sectors with the goal of achieving a holistic understanding of health in general. To implement this approach, diverse and heterogeneous data streams and types must be combined and analyzed. To this end, artificial intelligence (AI) techniques offer new opportunities for cross-sectoral assessment of current and future health threats. Using the example of antimicrobial resistance as a global threat in the One Health context, we demonstrate potential applications and challenges of AI techniques.This article provides an overview of different applications of AI techniques in the context of One Health and highlights their challenges. Using the spread of antimicrobial resistance (AMR), an increasing global threat, as an example, existing and future AI-based approaches to AMR containment and prevention are described. These range from novel drug development and personalized therapy, to targeted monitoring of antibiotic use in livestock and agriculture, to comprehensive environmental surveillance.


Assuntos
Antibacterianos , Saúde Única , Animais , Humanos , Antibacterianos/farmacologia , Inteligência Artificial , Farmacorresistência Bacteriana , Alemanha
8.
Artigo em Alemão | MEDLINE | ID: mdl-36811648

RESUMO

The SARS-CoV­2 pandemic has shown a deficit of essential epidemiological infrastructure, especially with regard to genomic pathogen surveillance in Germany. In order to prepare for future pandemics, the authors consider it urgently necessary to remedy this existing deficit by establishing an efficient infrastructure for genomic pathogen surveillance. Such a network can build on structures, processes, and interactions that have already been initiated regionally and further optimize them. It will be able to respond to current and future challenges with a high degree of adaptability.The aim of this paper is to address the urgency and to outline proposed measures for establishing an efficient, adaptable, and responsive genomic pathogen surveillance network, taking into account external framework conditions and internal standards. The proposed measures are based on global and country-specific best practices and strategy papers. Specific next steps to achieve an integrated genomic pathogen surveillance include linking epidemiological data with pathogen genomic data; sharing and coordinating existing resources; making surveillance data available to relevant decision-makers, the public health service, and the scientific community; and engaging all stakeholders. The establishment of a genomic pathogen surveillance network is essential for the continuous, stable, active surveillance of the infection situation in Germany, both during pandemic phases and beyond.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/genética , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pandemias/prevenção & controle , Alemanha/epidemiologia , Genômica
9.
PLoS Med ; 19(11): e1004122, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36355754

RESUMO

BACKGROUND: Long-term health sequelae of the Coronavirus Disease 2019 (COVID-19) are a major public health concern. However, evidence on post-acute COVID-19 syndrome (post-COVID-19) is still limited, particularly for children and adolescents. Utilizing comprehensive healthcare data on approximately 46% of the German population, we investigated post-COVID-19-associated morbidity in children/adolescents and adults. METHODS AND FINDINGS: We used routine data from German statutory health insurance organizations covering the period between January 1, 2019 and December 31, 2020. The base population included all individuals insured for at least 1 day in 2020. Based on documented diagnoses, we identified individuals with polymerase chain reaction (PCR)-confirmed COVID-19 through June 30, 2020. A control cohort was assigned using 1:5 exact matching on age and sex, and propensity score matching on preexisting medical conditions. The date of COVID-19 diagnosis was used as index date for both cohorts, which were followed for incident morbidity outcomes documented in the second quarter after index date or later.Overall, 96 prespecified outcomes were aggregated into 13 diagnosis/symptom complexes and 3 domains (physical health, mental health, and physical/mental overlap domain). We used Poisson regression to estimate incidence rate ratios (IRRs) with 95% confidence intervals (95% CIs). The study population included 11,950 children/adolescents (48.1% female, 67.2% aged between 0 and 11 years) and 145,184 adults (60.2% female, 51.1% aged between 18 and 49 years). The mean follow-up time was 236 days (standard deviation (SD) = 44 days, range = 121 to 339 days) in children/adolescents and 254 days (SD = 36 days, range = 93 to 340 days) in adults. COVID-19 and control cohort were well balanced regarding covariates. The specific outcomes with the highest IRR and an incidence rate (IR) of at least 1/100 person-years in the COVID-19 cohort in children and adolescents were malaise/fatigue/exhaustion (IRR: 2.28, 95% CI: 1.71 to 3.06, p < 0.01, IR COVID-19: 12.58, IR Control: 5.51), cough (IRR: 1.74, 95% CI: 1.48 to 2.04, p < 0.01, IR COVID-19: 36.56, IR Control: 21.06), and throat/chest pain (IRR: 1.72, 95% CI: 1.39 to 2.12, p < 0.01, IR COVID-19: 20.01, IR Control: 11.66). In adults, these included disturbances of smell and taste (IRR: 6.69, 95% CI: 5.88 to 7.60, p < 0.01, IR COVID-19: 12.42, IR Control: 1.86), fever (IRR: 3.33, 95% CI: 3.01 to 3.68, p < 0.01, IR COVID-19: 11.53, IR Control: 3.46), and dyspnea (IRR: 2.88, 95% CI: 2.74 to 3.02, p < 0.01, IR COVID-19: 43.91, IR Control: 15.27). For all health outcomes combined, IRs per 1,000 person-years in the COVID-19 cohort were significantly higher than those in the control cohort in both children/adolescents (IRR: 1.30, 95% CI: 1.25 to 1.35, p < 0.01, IR COVID-19: 436.91, IR Control: 335.98) and adults (IRR: 1.33, 95% CI: 1.31 to 1.34, p < 0.01, IR COVID-19: 615.82, IR Control: 464.15). The relative magnitude of increased documented morbidity was similar for the physical, mental, and physical/mental overlap domain. In the COVID-19 cohort, IRs were significantly higher in all 13 diagnosis/symptom complexes in adults and in 10 diagnosis/symptom complexes in children/adolescents. IRR estimates were similar for age groups 0 to 11 and 12 to 17. IRs in children/adolescents were consistently lower than those in adults. Limitations of our study include potentially unmeasured confounding and detection bias. CONCLUSIONS: In this retrospective matched cohort study, we observed significant new onset morbidity in children, adolescents, and adults across 13 prespecified diagnosis/symptom complexes, following COVID-19 infection. These findings expand the existing available evidence on post-COVID-19 conditions in younger age groups and confirm previous findings in adults. TRIAL REGISTRATION: ClinicalTrials.gov https://clinicaltrials.gov/ct2/show/NCT05074953.


Assuntos
COVID-19 , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos de Coortes , COVID-19/epidemiologia , Teste para COVID-19 , Alemanha/epidemiologia , Morbidade , Estudos Retrospectivos , Adulto Jovem , Pessoa de Meia-Idade , Síndrome de COVID-19 Pós-Aguda
10.
Epidemiol Infect ; 150: e141, 2022 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-35912971

RESUMO

In daycare centres, the close contact of children with other children and employees favours the transmission of infections. The majority of children <6 years attend daycare programmes in Germany, but the role of daycare centres in the SARS-CoV-2 pandemic is unclear. We investigated the transmission risk in daycare centres and the spread of SARS-CoV-2 to associated households. 30 daycare groups with at least one recent laboratory-confirmed SARS-CoV-2 case were enrolled in the study (10/2020-06/2021). Close contact persons within daycare and households were examined over a 12-day period (repeated SARS-CoV-2 PCR tests, genetic sequencing of viruses, symptom diary). Households were interviewed to gain comprehensive information on each outbreak. We determined primary cases for all daycare groups. The number of secondary cases varied considerably between daycare groups. The pooled secondary attack rate (SAR) across all 30 daycare centres was 9.6%. The SAR tended to be higher when the Alpha variant was detected (15.9% vs. 5.1% with evidence of wild type). The household SAR was 53.3%. Exposed daycare children were less likely to get infected with SARS-CoV-2 than employees (7.7% vs. 15.5%). Containment measures in daycare programmes are critical to reduce SARS-CoV-2 transmission, especially to avoid spread to associated households.


Assuntos
COVID-19 , SARS-CoV-2 , COVID-19/epidemiologia , Criança , Surtos de Doenças , Humanos , Pandemias
11.
Euro Surveill ; 26(42)2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34676821

RESUMO

BackgroundDuring the COVID-19 pandemic, public perceptions and behaviours have had to adapt rapidly to new risk scenarios and radical behavioural restrictions.AimTo identify major drivers of acceptance of protective behaviours during the 4-week transition from virtually no COVID-19 cases to the nationwide lockdown in Germany (3-25 March 2020).MethodsA serial cross-sectional online survey was administered weekly to ca 1,000 unique individuals for four data collection rounds in March 2020 using non-probability quota samples, representative of the German adult population between 18 and 74 years in terms of age × sex and federal state (n = 3,910). Acceptance of restrictions was regressed on sociodemographic variables, time and psychological variables, e.g. trust, risk perceptions, self-efficacy. Extraction of homogenous clusters was based on knowledge and behaviour.ResultsAcceptance of restrictive policies increased with participants' age and employment in the healthcare sector; cognitive and particularly affective risk perceptions were further significant predictors. Acceptance increased over time, as trust in institutions became more relevant and trust in media became less relevant. The cluster analysis further indicated that having a higher education increased the gap between knowledge and behaviour. Trust in institutions was related to conversion of knowledge into action.ConclusionIdentifying relevant principles that increase acceptance will remain crucial to the development of strategies that help adjust behaviour to control the pandemic, possibly for years to come. Based on our findings, we provide operational recommendations for health authorities regarding data collection, health communication and outreach.


Assuntos
COVID-19 , Pandemias , Adulto , Controle de Doenças Transmissíveis , Estudos Transversais , Alemanha/epidemiologia , Humanos , Pandemias/prevenção & controle , Percepção , SARS-CoV-2 , Inquéritos e Questionários , Confiança
12.
Sensors (Basel) ; 21(8)2021 Apr 14.
Artigo em Inglês | MEDLINE | ID: mdl-33919962

RESUMO

The increasing rate of antimicrobial resistance (AMR) in pathogenic bacteria is a global threat to human and veterinary medicine. Beyond antibiotics, antimicrobial peptides (AMPs) might be an alternative to inhibit the growth of bacteria, including AMR pathogens, on different surfaces. Biofilm formation, which starts out as bacterial adhesion, poses additional challenges for antibiotics targeting bacterial cells. The objective of this study was to establish a real-time method for the monitoring of the inhibition of (a) bacterial adhesion to a defined substrate and (b) biofilm formation by AMPs using an innovative thermal sensor. We provide evidence that the thermal sensor enables continuous monitoring of the effect of two potent AMPs, protamine and OH-CATH-30, on surface colonization of bovine mastitis-associated Escherichia (E.) coli and Staphylococcus (S.) aureus. The bacteria were grown under static conditions on the surface of the sensor membrane, on which temperature oscillations generated by a heater structure were detected by an amorphous germanium thermistor. Bacterial adhesion, which was confirmed by white light interferometry, caused a detectable amplitude change and phase shift. To our knowledge, the thermal measurement system has never been used to assess the effect of AMPs on bacterial adhesion in real time before. The system could be used to screen and evaluate bacterial adhesion inhibition of both known and novel AMPs.


Assuntos
Antibacterianos , Aderência Bacteriana , Animais , Biofilmes , Bovinos , Escherichia coli , Feminino , Humanos , Testes de Sensibilidade Microbiana , Proteínas Citotóxicas Formadoras de Poros
13.
World Dev ; 140: 105356, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34548743

RESUMO

The global COVID-19 pandemic poses challenges to the economy, politics and public health systems of developed and developing countries alike. However, the latter are less well placed to cope with adverse effects. In particular, important advances towards sustainable development might be reversed. Tackling the pandemic and its effects therefore requires global cooperation as well as solidarity in the form of development assistance. Yet, support for development assistance among donor publics might be dampened by individual health-related and economic worries as well as decreasing trust in government during the pandemic. Against this backdrop, we investigate the possible effect of pandemic-induced worries on public support for development assistance as well as the moderating role of moral considerations and trust in government. Drawing on literature on aid attitudes, and using survey data for Germany provided by the COVID-19 Snapshot Monitoring (COSMO) project from April 2020 (N = 1,006), our analyses show that neither health-related nor economic worries are associated with less support for providing development assistance during the first wave of the pandemic. However, we observe a marginal interaction between health-related worries and trust in government in predicting support for development assistance. For those with high levels of trust in government the effect of worry regarding the loss of friends or relatives on support for development assistance is positive, whereas it is close to zero for those with low levels of trust. We conclude that at the peak of the first wave of the pandemic there was little need for concern by policy-makers endorsing development assistance as neither form of worry correlated negatively with public support for development assistance and trust was high. However, when worries recur and trust in government simultaneously decreases, public support for global solidarity may wane.

14.
Artigo em Alemão | MEDLINE | ID: mdl-33512553

RESUMO

BACKGROUND: In the coronavirus pandemic, two institutions play a central role in the evidence-based classification of events for politics and the population. The Robert Koch Institute (RKI) coordinates the fight against the pandemic, prepares well-founded recommendations for medical professionals, the media and the population, and advises politicians. The Federal Centre for Health Education (BZgA) informs the population and institutions. GOALS: The COVID-19 Snapshot Monitoring (COSMO) project monitors whether and how trust in institutions changes over the pandemic. Which population groups show trust and how this is related to attitudes, risk perception and behaviour are analysed. METHODS: Cross-sectional studies with approximately N = 1000 respondents per survey were conducted since March 2020 to investigate risk perception, behaviour, acceptance of measures and trust in institutions. RESULTS: Trust in the RKI and BZgA was generally high but declined over the course of the pandemic. Higher trust for both institutions was associated with higher age of respondents, higher education, higher risk perception and higher acceptance of measures. Behaviours such as physical distancing and handwashing were shown more frequently. Men and the chronically ill showed lower trust. DISCUSSION: The results show that trust should be further promoted. This could be achieved, among other things, by taking into account the population's perspective (e.g. through COSMO) in the development and justification of strategies and measures. Communication strategies and recommendations for action should aim to support and relieve people with high-risk perceptions.


Assuntos
COVID-19 , Pandemias , Estudos Transversais , Alemanha/epidemiologia , Humanos , Masculino , Pandemias/prevenção & controle , SARS-CoV-2 , Inquéritos e Questionários , Confiança
15.
Emerg Infect Dis ; 26(3): 427-436, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32091355

RESUMO

Pathogen-based factors associated with tuberculosis (TB) in eastern Sudan are not well defined. We investigated genetic diversity, drug resistance, and possible transmission clusters of Mycobacterium tuberculosis complex (MTBC) strains by using a genomic epidemiology approach. We collected 383 sputum specimens at 3 hospitals in 2014 and 2016 from patients with symptoms suggestive of TB; of these, 171 grew MTBC strains. Whole-genome sequencing could be performed on 166 MTBC strains; phylogenetic classification revealed that most (73.4%; n = 122) belonged to lineage 3 (L3). Genome-based cluster analysis showed that 76 strains (45.9%) were grouped into 29 molecular clusters, comprising 2-8 strains/patients. Of the strains investigated, 9.0% (15/166) were multidrug resistant (MDR); 10 MDR MTBC strains were linked to 1 large MDR transmission network. Our findings indicate that L3 strains are the main causative agent of TB in eastern Sudan; MDR TB is caused mainly by transmission of MDR L3 strains.


Assuntos
Mycobacterium tuberculosis/genética , Tuberculose Pulmonar/epidemiologia , Adulto , Antituberculosos/farmacologia , Técnicas de Tipagem Bacteriana , Farmacorresistência Bacteriana Múltipla/genética , Feminino , Humanos , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Mycobacterium tuberculosis/efeitos dos fármacos , Escarro/microbiologia , Sudão/epidemiologia , Tuberculose Pulmonar/etiologia , Tuberculose Pulmonar/microbiologia
18.
Appl Environ Microbiol ; 86(20)2020 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-32769194

RESUMO

Avian pathogenic Escherichia coli (APEC) is a major bacterial pathogen of commercial poultry contributing to extensive economic losses and contamination of the food chain. One of the initial steps in bacterial infection and successful colonization of the host is adhesion to the host cells. A random transposon mutant library (n = 1,300) of APEC IMT 5155 was screened phenotypically for adhesion to chicken (CHIC-8E11) and human (LoVo) intestinal epithelial cell lines. The detection and quantification of adherent bacteria were performed by a modified APEC-specific antibody staining assay using fluorescence microscopy coupled to automated VideoScan technology. Eleven mutants were found to have significantly altered adhesion to the cell lines examined. Mutated genes in these 11 "adhesion-altered mutants" were identified by arbitrary PCR and DNA sequencing. The genes were amplified from wild-type APEC IMT 5155, cloned, and transformed into the respective adhesion-altered mutants, and complementation was determined in adhesion assays. Here, we report contributions of the fdtA, rluD, yjhB, ecpR, and fdeC genes of APEC in adhesion to chicken and human intestinal cell lines. Identification of the roles of these genes in APEC pathogenesis will contribute to prevention and control of APEC infections.IMPORTANCE Avian pathogenic E. coli is not only pathogenic for commercial poultry but can also cause foodborne infections in humans utilizing the same attachment and virulence mechanisms. Our aim was to identify genes of avian pathogenic E. coli involved in adhesion to chicken and human cells in order to understand the colonization and pathogenesis of these bacteria. In contrast to the recent studies based on genotypic and bioinformatics data, we have used a combination of phenotypic and genotypic approaches for identification of novel genes contributing to adhesion in chicken and human cell lines. Identification of adhesion factors remains important, as antibodies elicited against such factors have shown potential to block colonization and ultimately prevent disease as prophylactic vaccines. Therefore, the data will augment the understanding of disease pathogenesis and ultimately in designing strategies against the infections.


Assuntos
Adesinas de Escherichia coli/genética , Aderência Bacteriana/genética , Escherichia coli/fisiologia , Genes Bacterianos/fisiologia , Adesinas de Escherichia coli/metabolismo , Animais , Linhagem Celular , Galinhas , Escherichia coli/genética , Humanos
19.
Euro Surveill ; 25(11)2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32186278

RESUMO

Information on severity of coronavirus disease (COVID-19) (transmissibility, disease seriousness, impact) is crucial for preparation of healthcare sectors. We present a simple approach to assess disease seriousness, creating a reference cohort of pneumonia patients from sentinel hospitals. First comparisons exposed a higher rate of COVID-19 patients requiring ventilation. There were more case fatalities among COVID-19 patients without comorbidities than in the reference cohort. Hospitals should prepare for high utilisation of ventilation and intensive care resources.


Assuntos
Infecções por Coronavirus/diagnóstico , Coronavirus/isolamento & purificação , Influenza Humana/diagnóstico , Pneumonia Viral/diagnóstico , Idoso , Idoso de 80 Anos ou mais , Betacoronavirus , COVID-19 , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/virologia , Surtos de Doenças , Feminino , Hospitalização , Humanos , Influenza Humana/epidemiologia , Masculino , Pandemias , Pneumonia Viral/epidemiologia , Pneumonia Viral/virologia , SARS-CoV-2 , Vigilância de Evento Sentinela , Síndrome Respiratória Aguda Grave/virologia , Índice de Gravidade de Doença
20.
Euro Surveill ; 25(47)2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-33243353

RESUMO

Three months after a coronavirus disease (COVID-19) outbreak in Kupferzell, Germany, a population-based study (n = 2,203) found no RT-PCR-positives. IgG-ELISA seropositivity with positive virus neutralisation tests was 7.7% (95% confidence interval (CI): 6.5-9.1) and 4.3% with negative neutralisation tests. We estimate 12.0% (95% CI: 10.4-14.0%) infected adults (24.5% asymptomatic), six times more than notified. Full hotspot containment confirms the effectiveness of prompt protection measures. However, 88% naïve adults are still at high COVID-19 risk.


Assuntos
Teste de Ácido Nucleico para COVID-19 , Teste Sorológico para COVID-19 , Infecções por Coronavirus/diagnóstico , Coronavirus/genética , Coronavirus/isolamento & purificação , Pneumonia Viral/diagnóstico , Reação em Cadeia da Polimerase/métodos , Adolescente , Adulto , Idoso , COVID-19 , Infecções por Coronavirus/epidemiologia , Surtos de Doenças/prevenção & controle , Ensaio de Imunoadsorção Enzimática , Feminino , Alemanha/epidemiologia , Humanos , Imunoglobulina G , Incidência , Masculino , Pessoa de Meia-Idade , Pandemias/prevenção & controle , Pneumonia Viral/epidemiologia , Vigilância da População , SARS-CoV-2 , Estudos Soroepidemiológicos , Testes Sorológicos
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