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PURPOSE: In this study, we present DeepVirusClassifier, a tool capable of accurately classifying Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) viral sequences among other subtypes of the coronaviridae family. This classification is achieved through a deep neural network model that relies on convolutional neural networks (CNNs). Since viruses within the same family share similar genetic and structural characteristics, the classification process becomes more challenging, necessitating more robust models. With the rapid evolution of viral genomes and the increasing need for timely classification, we aimed to provide a robust and efficient tool that could increase the accuracy of viral identification and classification processes. Contribute to advancing research in viral genomics and assist in surveilling emerging viral strains. METHODS: Based on a one-dimensional deep CNN, the proposed tool is capable of training and testing on the Coronaviridae family, including SARS-CoV-2. Our model's performance was assessed using various metrics, including F1-score and AUROC. Additionally, artificial mutation tests were conducted to evaluate the model's generalization ability across sequence variations. We also used the BLAST algorithm and conducted comprehensive processing time analyses for comparison. RESULTS: DeepVirusClassifier demonstrated exceptional performance across several evaluation metrics in the training and testing phases. Indicating its robust learning capacity. Notably, during testing on more than 10,000 viral sequences, the model exhibited a more than 99% sensitivity for sequences with fewer than 2000 mutations. The tool achieves superior accuracy and significantly reduced processing times compared to the Basic Local Alignment Search Tool algorithm. Furthermore, the results appear more reliable than the work discussed in the text, indicating that the tool has great potential to revolutionize viral genomic research. CONCLUSION: DeepVirusClassifier is a powerful tool for accurately classifying viral sequences, specifically focusing on SARS-CoV-2 and other subtypes within the Coronaviridae family. The superiority of our model becomes evident through rigorous evaluation and comparison with existing methods. Introducing artificial mutations into the sequences demonstrates the tool's ability to identify variations and significantly contributes to viral classification and genomic research. As viral surveillance becomes increasingly critical, our model holds promise in aiding rapid and accurate identification of emerging viral strains.

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INTRODUCTION: The COVID-19 pandemic has increased the magnitude of mental illnesses such as depression, not only in the general population, but also in healthcare personnel. However, in Peru the prevalence, and the associated factors for developing depression in healthcare personnel, are not known. The objective was to determine the prevalence and identify the factors associated with depression in healthcare personnel, in the context of the SARS-CoV-2 pandemic. METHODS: An analytical cross-sectional study was carried out from May to September in healthcare establishments. A sample of 136 health workers were included and a survey was applied to collect the data. Depression as a dependent variable was measured using the Zung self-report scale. To identify the associated factors, the bivariate and multivariate analysis was performed by logistic regression with STATA v 14. RESULTS: The prevalence of depression was 8.8% (95%CI, 4.64-14.90). Having a family member or friend who had died from COVID-19 was associated with depression (OR = 6.78; 95%CI, 1.39-32.90; p = 0.017). Whereas the use of personal protective equipment was found to be a protective factor against developing depression (OR = 0.03; 95%CI, 0.004-0.32; p = 0.003). CONCLUSIONS: Approximately 1 in 10 healthcare professionals and technicians developed depression during the COVID-19 pandemic in this study. In addition, having relatives or friends who had died from COVID-19 was negatively associated with depression and use of personal protective equipment was identified as a protective factor.

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This study aimed to evaluate, by molecular methods, the presence of influenza A virus (IAV) and coronavirus in non-hematophagous bats collected in the state of São Paulo, Brazil. Samples of lung tissue and small intestine from 105 bats belonging to three families (Phyllostomidae, Vespertilionidae, and Molossidae) were collected in 22 municipalities in the state of São Paulo. Genetic identification of bats species was performed by amplification and sequencing of a fragment of 710 bp of the mitochondrial COI gene. In the detection of IAV, genomes were performed by RT-PCR, aiming at the amplification of a 245-bp fragment of the IAV matrix (M) protein gene. For coronaviruses, two fragments of 602 and 440 bp corresponding to segments along the gene encoding the RNA-dependent RNA polymerase (RdRp) were targeted. The detection limit for each of the PCRs was also determined. All samples analyzed here were negative for both viruses, and the lower limit of detection of the PCRs for the amplification of influenza virus A and coronavirus was estimated at 3.5 × 103 and 4.59 genomic copies per microliter, respectively. Although bats have been shown to harbor a large number of pathogens, the results of the present study support the theory that virus circulation in bats in the wild often occurs at low viral loads and that our understanding of the complex infectious dynamics of these viruses in wild conditions is still limited.

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Coronaviridae is a family of single-stranded positive enveloped RNA viruses. This article aimed to review the history of these viruses in the last 60 years since their discovery to understand what lessons can be learned from the past. A review of the PubMed database was carried out, describing taxonomy, classification, virology, genetic recombination, host adaptation, and main symptoms related to each type of virus. SARS-CoV-2 is responsible for the ongoing global pandemic, and SARS-CoV and MERS-CoV were responsible for causing severe respiratory illness and regional epidemics in the past while the four other strains of CoVs (229-E OC43, NL63, and HKU1) circulate worldwide and normally only cause mild upper respiratory tract infections. Given the enormous diversity of coronavirus viruses in wildlife and their continuous evolution and adaptation to humans, future outbreaks would undoubtedly occur. Restricting or banning all trade in wild animals in wet markets would be a necessary measure to reduce future zoonotic infections.

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Abstract: The aim of this study was to describe the oral health services offered by the Unified Health System in the northern macro-region of Minas Gerais, Brazil, during the COVID-19 pandemic. This was an observational, cross-sectional and descriptive study. Data collection took place between August and September 2020 through the completion of online questionnaires by oral health managers in the northern municipalities of Minas Gerais and by consultation of information available in the Special Epidemiological Bulletin Coronavirus North Macro-region n° 14. After collection, data were transferred to SPSS® (Statistical Package for the Social Sciences for Windows, version 24.0). Analyses were performed using frequency, mean, standard deviation and percentages. It was found that all included municipalities suspended elective treatments and maintained emergency dental care at all levels of care. In 62.5% of municipalities there were oral health professionals contaminated by COVID-19. Oral health teams implemented specific interventions to address the pandemic,with the most frequent being tele-orientation (74.7%), use of sanitary barriers (72%), and telemonitoring (68%). At the beginning of the pandemic, 62.5% of municipalities lacked personal protective equipment. Comsidering these results, it was found that the COVID-19 pandemic impacted the supply of dental services in northern Minas Gerais due to the suspension of elective care, contamination of professionals, lack of personal protective equipment, and development of new interventions. Thus, oral health teams had to adapt to new contexts of health interventionsto face COVID-19 and maintain dental care services.

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Introducción: Las enfermedades importadas constituyen un problema de salud para el individuo y para la población general. Debido al peligro sanitario que conlleva los viajes internacionales y el riesgo de introducción de enfermedades en la provincia. Objetivo: Caracterizar los viajeros notificados a la COVID-19 con fuente de infección en el extranjero según número reproductivo básico en la provincia Camagüey. Métodos: Se realizó un estudio observacional, descriptivo, transversal. El universo de estudio estuvo constituido por todos los viajeros notificados con la COVID-19 en la provincia que cumplieron con los criterios de inclusión y exclusión. Resultados: El escenario de intervención del 70 % de los notificados fue los centros de aislamiento para viajeros, predominaron los procedentes de Venezuela y el mes de marzo fue el de mayor incidencia, el 100 % procedían de áreas de transmisión de la enfermedad, el 55 % se encontraban asintomáticos en el momento del diagnóstico y el número reproductivo básico fue menor que uno en los municipios de destino y a nivel provincial. Conclusiones: Los centros de aislamientos para viajeros disminuyó el riesgo de dispersión de la enfermedad en los municipios de destino, los viajeros notificados tenían alta probabilidad de enfermar por proceder de países con transmisión de la enfermedad y los asintomáticos complejizaron el escenario de actuación.

Introduction: The cared illnesses constitute an important problem of health for the individual and for the general population. Due to the sanitary danger that bears the international trips and the risk of introduction of illnesses cared in the county, an investigation was carried out. Objective: To characterize the travelers notified to the COVID-19 with infection source abroad according to basic reproductive number in Camagüey's province. Methods: A observational, descriptive, traverse study was carried out. The study universe was constituted by all the travelers notified with the COVID-19 in the county that fulfilled the inclusion approaches and exclusion. Results: The scenario of intervention of 70% of those notified was the isolation centers for travelers, prevailing those coming from Venezuela and the month of March was that of more incidence, 100% came from areas of transmission of the illness, 55% was asymptomatic in the moment of the diagnosis and the basic reproductive number was smaller than one in the destination municipalities and at provincial level. Conclusions: The centers of isolations for travelers diminished the risk of dispersion of the illness in the destination municipalities, the notified travelers had high probability of making sick to come from countries with transmission of the illness and the asymptomatic ones worsen the performance scenario.

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INTRODUCTION: The COVID-19 pandemic has increased the magnitude of mental illnesses such as depression, not only in the general population, but also in health personnel. However, in Peru the prevalence is not known and the associated factors for developing depression in health personnel are not known. OBJECTIVE: To determine the prevalence and identify the factors associated with depression in health personnel, in the context of the SARS-CoV-2 pandemic. MATERIAL AND METHOD: An analytical cross-sectional study was carried out between the months of May-September in health establishments. A sample of 136 health workers were included and a survey was applied to collect the data. Depression as a dependent variable was measured using the Zung self-report scale. To identify the associated factors, the bivariate and multivariate analysis was performed by logistic regression with STATA v 14. RESULTS: The prevalence of depression was 8.8% CI 95% (4.64-14.90), likewise, the antecedent of having a family member or friend died from COVID-19 with a p value of 0.017 and OR of 6.78 (CI: 1.39-32.90). On the other hand, the use of personal protective equipment (PPE) was found to be a protective factor against the development of depression with p value 0.003 and OR of 0.03 (CI: 0.004-0.32). CONCLUSIONS: Approximately 1 in 10 among health professionals and technicians developed depression during the SARS-CoV-2 pandemic in this study. In addition, the history of having relatives or friends killed by COVID-19 was negatively associated with depression and the use of PPE was identified as a protective factor for depression.

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ABSTRACT Acute appendicitis (AA) is a frequent cause of abdominal pain requiring surgical treatment. During the COVID-19 pandemic, surgical societies considered other therapeutic options due to uncertainties in the evolution of the disease. The purpose of this study is to assess the treatment of AA by members of two Brazilian surgical societies in this period. A common questionnaire was sent in 2020. There were 382 responses. Most surgeons had more than 15 years of profession (68.3%) and treated more than five cases per month (44.8%). About 72.5% would indicate chest CT to investigate COVID-19 in patients with AA. For those patients sustaining uncomplicated AA, without COVID-19, 60.2% would indicate laparoscopic appendectomy (VLA), followed by open appendectomy (OA) (31.7%) and non-operative management (NOM) (1.3%). For those with mild COVID-19, OA was suggested by 51.0%, followed by VLA (29.6%) and NOM (6.0%). For those with severe COVID-19, OA was proposed by 35.3%, followed by NOM (19.9%) and VLA (18.6%). For patients with periappendiceal abscesses, without COVID-19, VLA was suggested by 54.2%, followed by OA (33.2%) and NOM (4.4%). For those with mild COVID-19, OA was proposed in 49.5%, followed by VLA (29.3%) and NOM (8.9%). In those with severe COVID-19, OA was proposed in 36.6%, followed by NOM (25.1%) and VLA (17.3%). This information, based on two recognized Brazilian surgical societies, can help the surgeon to select the best approach individually.

RESUMO A apendicite aguda (AA) é causa frequente de abdome agudo cirúrgico. Durante a pandemia de COVID-19, devido às incertezas na evolução da doença, sociedades consideraram outras opções terapêuticas. Nosso objetivo é descrever o tratamento da AA por membros do CBC e SBAIT neste período. O questionário foi enviado em 2020. Houve 382 respostas. A maioria dos profissionais tinha mais de 15 anos de profissão (68,3%) e atendia mais de cinco casos por mês (44,8%). Cerca de 72,5% realizariam TC de tórax para investigação de COVID-19 em pacientes com AA. Nos com AA não complicada, sem COVID-19, 60,2% optariam pela apendicectomia videolaparoscópica (AVL), seguido de apendicectomia aberta (AAB) (31,7%) e tratamento não operatório (TNO) (1,3%). Nos com COVID-19 leve, AAB foi proposta por 51,0%, seguido da AVL (29,6%) e TNO (6,0%). Nos com COVID-19 grave, a AAB foi proposta por 35,3%, seguido de TNO (19,9%) e AVL (18,6%). Nos com AA complicadas com abscesso, sem COVID-19, AVL foi sugerida por 54,2%, seguida da AAB (33,2%) e TNO (4,4%). Nos com COVID-19 leve, a AAB foi proposta em 49,5%, seguidos da AVL (29,3%) e TNO (8,9%). Nos com COVID-19 grave, a AAB foi proposta em 36,6%, seguido de TNO (25,1%) e AVL (17,3%). Estas são opções de cirurgiões de duas sociedades cirúrgicas reconhecidas e podem auxiliar o colega que está na linha de frente a definir a melhor conduta individualmente.

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Coronaviruses (CoV) are pathogens that are transmitted to animals and humans; they spread around the world. Six types of coronavirus have been identified as causing human disease: four cause mild respiratory symptoms, while two types, the Middle East Respiratory Syndrome (MERS) and the Severe Acute Respiratory Syndrome (SARS), have caused epidemics with high mortality rates. Human coronaviruses cause common cold, lead to lower respiratory tract infections and are involved in pediatric gastroenteritis. Currently, the coronavirus SARS-CoV-2 has been transmitted between species, included humans, and is a very virulent respiratory virus, causing the disease known as COVID-19, which to date, has not an authorized medical treatment. The World Health Organization announced that the outbreak of COVID-19 has been upgraded from a health emergency to a pandemic. Therefore, the objectives of this paper are to mention the basic concepts of coronavirus (structure, genome, mutation and recombination), its epidemiological description, animal-human transmission mechanism, pathogenesis and therapeutics.

Los coronavirus (CoV) son patógenos que se transmiten a los animales y a los humanos; tienen una distribución mundial. Se han identificado seis tipos de CoV como causantes de enfermedades humanas: cuatro causan síntomas respiratorios leves, mientras que dos tipos, el síndrome respiratorio del Medio Oriente (MERS) y el síndrome respiratorio agudo severo (SARS), han causado epidemias con altas tasas de mortalidad. Los coronavirus humanos causan el resfriado común, provocan infecciones de las vías respiratorias inferiores y están implicados en la gastroenteritis infantil. En la actualidad, el coronavirus SARS-CoV-2 se ha transmitido entre especies, incluido el hombre, y tiene la característica de ser un virus respiratorio muy virulento que causa la enfermedad conocida como COVID-19, la cual hasta la fecha no tiene un tratamiento médico autorizado. La Organización Mundial de la Salud anunció que el brote de COVID-19 ha pasado de ser una emergencia sanitaria a una pandemia. Por lo tanto, los objetivos de este documento son mencionar las generalidades de los coronavirus (estructura, genoma, mutación y recombinación), la descripción epidemiológica, el mecanismo de transmisión entre animales y humanos, la patogénesis y la terapéutica.