mRNA-1273 boost after BNT162b2 vaccination generates comparable SARS-CoV-2-specific functional responses in naïve and COVID-19-recovered individuals.

Introduction: COVID-19 vaccines based on mRNA have represented a revolution in the biomedical research field. The initial two-dose vaccination schedule generates potent humoral and cellular responses, with a massive protective effect against severe COVID-19 and death. Months after this vaccination, levels of antibodies against SARS-CoV-2 waned, and this promoted the recommendation of a third vaccination dose. Methods: We have performed an integral and longitudinal study of the immunological responses triggered by the booster mRNA-1273 vaccination, in a cohort of health workers previously vaccinated with two doses of the BNT162b2 vaccine at University Hospital La Paz located in Madrid, Spain. Circulating humoral responses and SARS-CoV-2-specific cellular reactions, after ex vivo restimulation of both T and B cells (cytokines production, proliferation, class switching), have been analyzed. Importantly, all along these studies, the analyses have been performed comparing naïve and subjects recovered from COVID-19, addressing the influence of a previous infection by SARS-CoV-2. Furthermore, as the injection of the third vaccination dose was contemporary to the rise of the Omicron BA.1 variant of concern, T- and B-cell-mediated cellular responses have been comparatively analyzed in response to this variant. Results: All these analyses indicated that differential responses to vaccination due to a previous SARS-CoV-2 infection were balanced following the boost. The increase in circulating humoral responses due to this booster dropped after 6 months, whereas T-cell-mediated responses were more stable along the time. Finally, all the analyzed immunological features were dampened in response to the Omicron variant of concern, particularly late after the booster vaccination. Conclusion: This work represents a follow-up longitudinal study for almost 1.5 years, analyzing in an integral manner the immunological responses triggered by the prime-boost mRNA-based vaccination schedule against COVID-19.

EL ACCESO UNIVERSAL A LA ENERGÍA

En 2015, las Naciones Unidas aprobaron el Objetivo de Desarrollo Sostenible (ODS) número 7 para garantizar el acceso universal a servicios energéticos asequibles, fiables y modernos para el año 2030. Sin embargo, los avances son lentos, y las previsiones indican que en muchos países no se alcanzará este objetivo, a menos que se realicen cambios sustanciales en el sector eléctrico, como el desarrollo de un Marco Integrado de Distribución, la planificación geoespacial integrada, la definición de modelos de negocio, marcos regulatorios y planes financieros viables y sostenibles, y el cambio de visión sobre el cocinado moderno, con la promoción del cocinado con electricidad.Alternate :In 201 5, the United Nations approved the Sustainable Development Goal (SDG) number 7 to ensure universal access to affordable, reliable and modern energy services by 2030. However, progress is slow, and forecasts indicate that in many countries this objective will not be achieved unless substantial changes are made in the electricity sector, such as the development of an Integrated Distribution Framework, the integrated geospatial planning, the definition of viable and sustainable business models, regulatory frameworks and financial plans, and the change of vision on modern cooking, with the promotion of cooking with electricity.

Can classic biological invasion hypotheses be applied to reported cases of non-native terrestrial species in the Maritime Antarctic?

Understanding the success factors underlying each step in the process of biological invasion provides a robust foundation upon which to develop appropriate biosecurity measures. Insights into the processes occurring can be gained through clarifying the circumstances applying to non-native species that have arrived, established and, in some cases, successfully spread in terrestrial Antarctica. To date, examples include a small number of vascular plants and a greater diversity of invertebrates (including Diptera, Collembola, Acari and Oligochaeta), which share features of pre-adaptation to the environmental stresses experienced in Antarctica. In this synthesis, we examine multiple classic invasion science hypotheses that are widely considered to have relevance in invasion ecology and assess their utility in understanding the different invasion histories so far documented in the continent. All of these existing hypotheses appear relevant to some degree in explaining invasion processes in Antarctica. They are also relevant in understanding failed invasions and identifying barriers to invasion. However, the limited number of cases currently available constrains the possibility of establishing patterns and processes. To conclude, we discuss several new and emerging confirmatory methods as relevant tools to test and compare these hypotheses given the availability of appropriate sample sizes in the future.

A Pilot Study on the Feasibility of Developing and Implementing a Mobile App for the Acquisition of Clinical Knowledge and Competencies by Medical Students Transitioning from Preclinical to Clinical Years.

Due to the COVID-19 pandemic and the consequent restrictions, universities have had to adapt their curricula substantially to new schemes in which remote learning is of the essence. In this study, we assess the feasibility of developing a mobile app supplementary to the distant teaching paradigm for the "Cardiology" module of the "General Pathology" subject in undergraduate Medical Education, and we evaluate its impact and acceptability. A cohort of volunteer second-year medical students (n = 44) had access to the app, and their opinions on its utility (1-10) were collected. Additionally, the students were invited to refer their expected satisfaction (1-10) with a blended learning methodology overlapping this new tool with the traditional resources. The average expected satisfaction had been compared to the average satisfaction obtained by just the traditional methodology in other modules from the same subject. Through a qualitative approach, we defined the strengths and weaknesses of the tool. Seventy-seven percent of the participants rated at 8/10 or more the potential learning value of the application and, if used as a supplement to traditional teaching, it would also statistically improve the satisfaction of students (6.52 vs. 8.70, p < 0.001). Similarly, the qualitative data corroborated the benefits of such innovation. Multidisciplinary collaborations are encouraged to develop teaching innovations, although further research should aim to better define the effectiveness of learning with these resources.

Could Statin Therapy Be Useful in Patients With Coronavirus Disease 2019 (COVID-19)?

Acute respiratory distress syndrome (ARDS), resulting from an exaggerated inflammatory response, is the main cause of death from the coronavirus disease 2019 (COVID-19). Apart from respiratory infection, COVID-19 patients can develop cardiovascular disorders such as myocardial injury and myocarditis, pericarditis, cardiac arrest and arrhythmias, cardiomyopathy, heart failure, coagulation abnormalities and thrombosis. Statins can beneficially affect inflammation, oxidative stress, coagulation, thrombosis, angiotensin converting enzyme receptor, lipid rafts, and endothelial function. In this narrative review, we provide a critical overview of the current evidence and future perspectives on the use of statins to modulate the severity, duration and complications of COVID-19 through their pleiotropic properties.

[Mental health interventions for college and university students during the COVID-19 pandemic: a critical synthesis of the literature]. / Intervenciones para la salud mental de estudiantes universitarios durante la pandemia por COVID-19: una síntesis crítica de la literatura.

BACKGROUND: College and university students are a population vulnerable to mental disorders, especially during the COVID-19 pandemic. Their mental health has been affected by confinement, difficulties in the development of academic activities, and the demands of new pedagogical modalities. We aimed to respond to the question: what are the actions around a) promotion and prevention, b) mental symptoms care, and c) pedagogical adaptations that can be developed in order to improve the mental health of college and university students? METHODS: We conducted a critical synthesis from a systematic review of the literature. A search was made for scientific articles with descriptive, analytical, empirical or evaluative designs, as well as web resources of organisations related to the topic. A synthesis was carried out based on the three aspects of the question by means of a constant comparative method, until the aggregation of actions by similarity in the actors. We anticipated low evidence quality; therefore, a standardised evaluation was not performed. RESULTS: We explored 68 articles and 99 web resources. After reviewing the full text, 12 scientific articles and 11 web resources were included. As general guidelines, we found that the most frequent suggestion is the design of a specific structured mental health programme within universities, one that should be multidisciplinary, inclusive, dynamic and culturally sensitive. All actions taken by the university should be reported and published periodically so that students and other members of the university community are clear about them. Ideally, it is suggested to keep them until the post-pandemic period and include alumni. Regarding a) promotion and prevention, digital psychoeducation was recommended, with information about healthy lifestyles, common emotional reactions to epidemics, coping strategies and warning signs. Peer participation is suggested as a support strategy, as well as spaces for social interaction that focus not only on academic aspects but also on leisure. Screening for mental symptoms is suggested through frequent submission of online forms or mobile applications. In addition to mental health, it is important to inquire about the degree of satisfaction of basic and technology-related needs. For b) the care of mental symptoms, one of the actions commonly identified was a consulting centre that can provide mental health care by telephone, by technology, and even in person --if required --, with permanent availability with rapid response teams for crisis situations, such as suicidal behaviour and domestic violence. For c) pedagogical adaptations, fluent communication is an indispensable requirement; having clear instructions on academic activities can reduce uncertainty and therefore anxiety. The teaching and pedagogical staff at the institution can offer direct advice (via video calls or online group meetings) to provide support in study habits, degree-specific material and mental health. CONCLUSIONS: Included resources suggest the creation of a programme that specifically addresses the mental health of students. This synthesis can provide guidelines that facilitate decision-making by the university, without losing sight of the fact that the institution and the student are immersed in a complex context, with circumstances and other actors at various levels that also intervene in mental health. Research is required on the evolution of the mental health situation and the effect of the actions that are being taken.

Narrative review on clinical considerations for patients with diabetes and COVID-19: More questions than answers.

BACKGROUND-AIM: Diabetes, obesity and hypertension are common comorbidities associated with increased severity and mortality rates from Corona Virus Disease (COVID)-19. METHODS: In this narrative review (using the PubMed database), we discuss epidemiological data and pathophysiological links between diabetes and COVID-19. The potential effects of glycaemic control and antidiabetic drugs on the prevalence and outcomes of COVID-19 are also reviewed, as well as the role of telemedicine and diabetes self-management in the post-COVID-19 era. RESULTS: Diabetes has been linked to COVID-19 morbidity and mortality, although further research is needed to elucidate this association. In the meantime, physicians should be aware of the potential rise in the prevalence of diabetes (due to unhealthy lifestyle changes during the pandemic), its severity and complications and focus on achieving optimal diabetes prevention and management. Telemedicine and diabetes self-management may help towards this direction. Dipeptidyl-peptidase 4 (DPP4) inhibitors, glucagon-like peptide-1 (GLP-1) receptor agonists and sodium-glucose transporter 2 (SGLT2) inhibitors may affect viral entry and infection, and thus COVID-19 outcomes, as shown in observational studies. CONCLUSION: Diabetes has been associated with COVID-19 development and progression. Certain antidiabetic drugs may influence COVID-19 prevention and management. The results of ongoing randomized clinical trials will shed more light on this field.

Mental health interventions for college and university students during the COVID-19 pandemic: A critical synthesis of the literature.

BACKGROUND: The aim of the study is to compare the emotional effects of COVID-19 among three different groups, namely: health personnel, medical students, and a sample of the general population. METHODS: 375 participants were recruited for this study, of which 125 were medical students (preclinical studies, 59; clinical studies, 66), 125 were health personnel (COVID-19 frontline personnel, 59; personnel not related with COVID-19, 66), and 125 belonged to the general population. The PHQ-9, GAD-7, and CPDI scales were used to assess the emotional impact. A multinomial logistic regression was performed to measure differences between groups, considering potential confounding factors. RESULTS: Regarding CPDI values, all other groups showed reduced values compared to COVID-19 frontline personnel. However, the general population, preclinical and clinical medical students showed increased PHQ-9 values compared to COVID-19 frontline personnel. Finally, confounding factors, gender and age correlated negatively with higher CPDI and PHQ-9 scores. CONCLUSIONS: Being frontline personnel is associated with increased COVID-19-related stress. Depression is associated, however, with other groups not directly involved with the treatment of COVID-19 patients. Female gender and younger age correlated with COVID-19-related depression and stress.

Telepsychiatry Consultation for Primary Care Treatment of Children and Adolescents Receiving Child Protective Services in Chile: Mixed Methods Feasibility Study.

BACKGROUND: Children and adolescents living under the supervision of child protective services have complex mental health care needs. The scarcity and uneven distribution of specialized mental health teams in Chile may limit the provision and quality of care for this vulnerable population. Telepsychiatry can address such health inequities. OBJECTIVE: The objective of this study was to evaluate the feasibility of a telepsychiatry consultation program for primary health care (PHC) treatment of children and adolescents living under the supervision of child protective services. METHODS: We developed a telepsychiatry consultation program for two rural PHC clinics located in central Chile (Valparaíso Region) and evaluated its implementation using a mixed methods study design. The program consisted of videoconferencing mental health consultation sessions scheduled twice per month (each 90 minutes long), over a 6-month period, delivered by child and adolescent psychiatrists based in Santiago, Chile. We described the number of mental health consultation sessions, participant characteristics, perceived usefulness and acceptability, and experiences with the telepsychiatry consultation program. RESULTS: During the 6-month study period, 15 videoconferencing mental health consultation sessions were held. The telepsychiatry consultation program assisted PHC clinicians in assigning the most adequate diagnoses and making treatment decisions on pharmacotherapy and/or psychotherapy of 11 minors with complex care needs. The intervention was perceived to be useful by PHC clinicians for improving the resolution capacity in the treatments of this patient population. Limitations such as connectivity issues were resolved in most sessions. CONCLUSIONS: The telepsychiatry consultation program was feasible and potentially useful to support PHC clinicians in the management of institutionalized children and adolescents with complex psychosocial care needs living in a poorly resourced setting. A larger scale trial should assess clinical outcomes in the patient population. Regulations and resources for this service model are needed to facilitate sustainability and large-scale implementation.

Prior Treatment with Statins is Associated with Improved Outcomes of Patients with COVID-19: Data from the SEMI-COVID-19 Registry.

BACKGROUND: The impact of statins on COVID-19 outcomes is important given the high prevalence of their use among individuals at risk for severe COVID-19. Our aim is to assess whether patients receiving chronic statin treatment who are hospitalized with COVID-19 have reduced in-hospital mortality if statin therapy is maintained during hospitalization. METHODS: This work is a cross-sectional, observational, retrospective multicenter study that analyzed 2921 patients who required hospital admission at 150 Spanish centers included in the nationwide SEMI-COVID-19 Network. We compared the clinical characteristics and COVID-19 disease outcomes between patients receiving chronic statin therapy who maintained this therapy during hospitalization versus those who did not. Propensity score matching was used to match each statin user whose therapy was maintained during hospitalization to a statin user whose therapy was withdrawn during hospitalization. RESULTS: After propensity score matching, continuation of statin therapy was associated with lower all-cause mortality (OR 0.67, 0.54-0.83, p < 0.001); lower incidence of acute kidney injury (AKI) (OR 0.76,0.6-0.97, p = 0.025), acute respiratory distress syndrome (ARDS) (OR 0.78, 0.69- 0.89, p < 0.001), and sepsis (4.82% vs 9.85%, p = 0.008); and less need for invasive mechanical ventilation (IMV) (5.35% vs 8.57, p < 0.001) compared to patients whose statin therapy was withdrawn during hospitalization. CONCLUSIONS: Patients previously treated with statins who are hospitalized for COVID-19 and maintain statin therapy during hospitalization have a lower mortality rate than those in whom therapy is withdrawn. In addition, statin therapy was associated with a decreased probability that patients with COVID-19 will develop AKI, ARDS, or sepsis and decreases the need for IMV.

Mortality and other adverse outcomes in patients with type 2 diabetes mellitus admitted for COVID-19 in association with glucose-lowering drugs: a nationwide cohort study.

BACKGROUND: Limited evidence exists on the role of glucose-lowering drugs in patients with COVID-19. Our main objective was to examine the association between in-hospital death and each routine at-home glucose-lowering drug both individually and in combination with metformin in patients with type 2 diabetes mellitus admitted for COVID-19. We also evaluated their association with the composite outcome of the need for ICU admission, invasive and non-invasive mechanical ventilation, or in-hospital death as well as on the development of in-hospital complications and a long-time hospital stay. METHODS: We selected all patients with type 2 diabetes mellitus in the Spanish Society of Internal Medicine's registry of COVID-19 patients (SEMI-COVID-19 Registry). It is an ongoing, observational, multicenter, nationwide cohort of patients admitted for COVID-19 in Spain from March 1, 2020. Each glucose-lowering drug user was matched with a user of other glucose-lowering drugs in a 1:1 manner by propensity scores. In order to assess the adequacy of propensity score matching, we used the standardized mean difference found in patient characteristics after matching. There was considered to be a significant imbalance in the group if a standardized mean difference > 10% was found. To evaluate the association between treatment and study outcomes, both conditional logit and mixed effect logistic regressions were used when the sample size was ≥ 100. RESULTS: A total of 2666 patients were found in the SEMI-COVID-19 Registry, 1297 on glucose-lowering drugs in monotherapy and 465 in combination with metformin. After propensity matching, 249 patients on metformin, 105 on dipeptidyl peptidase-4 inhibitors, 129 on insulin, 127 on metformin/dipeptidyl peptidase-4 inhibitors, 34 on metformin/sodium-glucose cotransporter 2 inhibitor, and 67 on metformin/insulin were selected. No at-home glucose-lowering drugs showed a significant association with in-hospital death; the composite outcome of the need of intensive care unit admission, mechanical ventilation, or in-hospital death; in-hospital complications; or long-time hospital stays. CONCLUSIONS: In patients with type 2 diabetes mellitus admitted for COVID-19, at-home glucose-lowering drugs showed no significant association with mortality and adverse outcomes. Given the close relationship between diabetes and COVID-19 and the limited evidence on the role of glucose-lowering drugs, prospective studies are needed.

The financing of SMEs in the Spanish tourism sector at the onset of the 2008 financial crisis: Lessons to learn?

Small and medium enterprises (SMEs) are a powerful economic engine in many European countries. Moreover, tourism SMEs are particularly important in the economies of countries in southern Europe due to the climate and sociodemographic situation, among other reasons. In Spain, specifically, these enterprises are a vital economic asset. Nonetheless, neither the importance of SMEs in the tourism industry nor the main factors that influence their capital structure have been sufficiently studied. We used panel data methodology with a regression model to analyse the capital structure of SMEs in the tourism sector at the onset of the 2008 financial crisis. Our results show the significance of SMEs within the tourism industry as well as the need to take into account the main factors that influence their capital, which are type (micro, small or medium enterprise), profitability, number of employees and size (logarithm of total assets). Furthermore, despite the robustness of these companies, they have been affected by the crisis. This study is of great interest as it provides indicators to understand the strength of tourist SMEs to confront potential crises.