Outbreaks
Mostrando 1-12 de 1282 artigos, teses e dissertações.
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1. Dynamic Systems with Fractional Derivatives Applied to Interagent Populations Problems
ABSTRACT The present work has as main objective to investigate the use of fractional calculus in the modeling of epidemic outbreaks of interacting populations. In particular, we propose a generalization of the SIR model with fractional derivatives to describe the dynamics of the COVID-19 epidemic outbreak in two cities with interacting populations. In specia
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Zika virus RNA detection in blood donors in São Paulo, Brazil
ABSTRACT Introduction: The Zika Virus (ZIKV) is a single-stranded RNA genome virus, belonging to the family Flaviviridae, genus Flavivirus. Outbreaks around the world have demonstrated that the presence of asymptomatic viremic blood donors provides an increase in the risk of transfusion transmission (TT) and nucleic acid test (NAT) screening has been propos
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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3. Prevalence and level of Salmonella spp. Contamination on selected pathways of preparation and cooking of fried chicken at the household level
Abstract Homemade foods have been reported as an important contributor to some foodborne outbreaks. This study determined the prevalence and number of Salmonella spp. on selected pathways of fried chicken preparation and cooking at the household level and investigated their antimicrobial resistance. Salmonella serovar was confirmed by polymerase chain reacti
Food Sci. Technol. Publicado em: 2021-06
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4. Effect of water activity and storage of tahini on the viability of stressed Salmonella serovars
Abstract Tahini (sesame seed paste) is a low water activity product that has been involved in several salmonellosis outbreaks. The objectives of the study were to examine over a year the impact of aw and storage temperature of tahini on the viability of Salmonella serovars previously stressed by drying or heat exposure. Tahini samples adjusted to aw values o
Food Sci. Technol. Publicado em: 2021-03
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5. Monitoring environmental microbiological safety in a frozen fruit and vegetable plant
Abstract Ensuring food safety is becoming progressively important in frozen foods due to increased demand and consumption worldwide. The Environmental Monitoring Program (EMP) shall support daily operational activities and monitor the lack of process hygiene & sanitation actions to achieve food safety. The aim of this study was implementation of EMP in the f
Food Sci. Technol. Publicado em: 2021-03
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6. Concerns about COVID-19 and arboviral (chikungunya, dengue, zika) concurrent outbreaks
ABSTRACT Background: COVID-19 is a new disease and the most common complication is pneumonia. The Radiological Society of North America (RSNA) proposed an expert consensus for imaging classification for COVID-19 pneumonia. Objective: To evaluate sensitivity, specificity, accuracy, and reproducibility of chest CT standards in the beginning of the Brazilian
Braz J Infect Dis. Publicado em: 2020-12
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7. Bladder Cancer at the time of COVID-19 Outbreak
ABSTRACT The COVID-19 outbreak has led to the deferral of a great number of surgeries in an attempt to reduce transmission of infection, free up hospital beds, intensive care and anaesthetists, and limit aerosol-generating procedures. Guidelines and suggestions have been provided to categorize Urological diseases into risk groups and recommendations are avai
Int. braz j urol.. Publicado em: 2020-07
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8. Viral metagenomics performed in patients with acute febrile syndrome during Toxoplasma gondii outbreak in south Brazil
ABSTRACT Toxoplasmosis is a zoonotic infection caused by the protozoan parasite Toxoplasma gondii. The infection is widely disseminated in the human population and is usually benign or asymptomatic. Systemic T. gondii infection presents risks for pregnant women and AIDS patients. Although rare, T. gondii can cause outbreaks in urban centers. The origin of th
Braz J Infect Dis. Publicado em: 2020-06
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9. Organizing pneumonia in a patient with hodgkin's lymphoma and large B cell lymphoma: a rare association
ABSTRACT Toxoplasmosis is a zoonotic infection caused by the protozoan parasite Toxoplasma gondii. The infection is widely disseminated in the human population and is usually benign or asymptomatic. Systemic T. gondii infection presents risks for pregnant women and AIDS patients. Although rare, T. gondii can cause outbreaks in urban centers. The origin of th
Hematol., Transfus. Cell Ther.. Publicado em: 2020-06
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10. Epidemiologia do esgoto como estratégia para monitoramento comunitário, mapeamento de focos emergentes e elaboração de sistemas de alerta rápido para COVID-19
The ability to monitor the spread of diseases is essential for prevention, intervention and control practices. In this context, wastewater-based epidemiology (WBE) has been applied to empirically evaluate the exposure of populations to chemical substances and pathogens of emerging concern in near real time. During the current COVID-19 pandemic, WBE remains a
Quím. Nova. Publicado em: 2020-04
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11. Measles, rubella, mumps and Toxoplasma gondii antibodies in saliva of vaccinated students of schools and universities in São Paulo City, Brazil
ABSTRACT Introduction: Vaccines are well-established public health interventions with major impacton the prevalence of infectious diseases, but outbreaks are occurring frequently due to pri-mary and secondary failures, despite high coverage. Surveillance of efficacy and duration ofinduced immunity is a difficult task as it requires invasive blood sampling i
Braz J Infect Dis. Publicado em: 2020-02
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12. Beware of reflectance confocal microscopy artifacts when searching hyphae in acral skin,
ABSTRACT Background: Although performance of rapid immunochromatographic tests (RITs) for dengue virus (DENV) serotypes 1, 2 and 3 is relatively settled, evidence on accuracy of RITs for DENV-4 are based on studies with small sample sizes and with discrepant results. Objectives: To assess accuracy and inter-observer agreement of RITs targeting dengue nonst
An. Bras. Dermatol.. Publicado em: 2020-02