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1.
Gaceta sanitaria ; 2023.
Article in Spanish | EuropePMC | ID: covidwho-2323178

ABSTRACT

Objetivo: Estimar la seroprevalencia de anticuerpos frente al SARS-CoV-2 en la Comunidad Valenciana (España) en octubre de 2022, cuando BA.5 era la variante predominante. Método: Estudio transversal de base poblacional de ámbito autonómico en 88 centros de atención primaria de la Comunidad Valenciana seleccionados aleatoriamente. Resultados: La seroprevalencia de anticuerpos antinucleocápside (indicativos de infección previa) y frente al dominio de la unión al receptor (indicativos de infección o vacunación) fue del 71,0% (intervalo de confianza [IC]: 67,8-74,2) y del 98,4% (IC: 97,5-99,3), respectivamente. El 66,7% (IC: 63,4-70,0) de la población mostraba inmunidad híbrida, pero solo el 43,2% de los mayores de 80 años. Conclusiones: La alta proporción de inmunidad híbrida detectada era relevante para las estrategias de salud pública, pero era aconsejable un segundo refuerzo de vacunación en la población anciana.

2.
Anal Chem ; 95(25): 9564-9574, 2023 06 27.
Article in English | MEDLINE | ID: covidwho-2324755

ABSTRACT

Recurrent disease outbreaks caused by different viruses, including the novel respiratory virus SARS-CoV-2, are challenging our society at a global scale; so versatile virus detection methods would enable a calculated and faster response. Here, we present a novel nucleic acid detection strategy based on CRISPR-Cas9, whose mode of action relies on strand displacement rather than on collateral catalysis, using the Streptococcus pyogenes Cas9 nuclease. Given a preamplification process, a suitable molecular beacon interacts with the ternary CRISPR complex upon targeting to produce a fluorescent signal. We show that SARS-CoV-2 DNA amplicons generated from patient samples can be detected with CRISPR-Cas9. We also show that CRISPR-Cas9 allows the simultaneous detection of different DNA amplicons with the same nuclease, either to detect different SARS-CoV-2 regions or different respiratory viruses. Furthermore, we demonstrate that engineered DNA logic circuits can process different SARS-CoV-2 signals detected by the CRISPR complexes. Collectively, this CRISPR-Cas9 R-loop usage for the molecular beacon opening (COLUMBO) platform allows a multiplexed detection in a single tube, complements the existing CRISPR-based methods, and displays diagnostic and biocomputing potential.


Subject(s)
COVID-19 , CRISPR-Cas Systems , Humans , CRISPR-Cas Systems/genetics , SARS-CoV-2/genetics , COVID-19/diagnosis , DNA
3.
Gac Sanit ; 37: 102312, 2023.
Article in English | MEDLINE | ID: covidwho-2323177

ABSTRACT

OBJECTIVE: To estimate the seroprevalence of SARS-CoV-2 antibodies in the Valencian Community (Spain) in October 2022, when BA.5 was the predominant variant. METHOD: Cross-sectional, region-wide, population-based serosurvey study in 88 randomly selected primary care centers of the Valencian Community. RESULTS: Seroprevalence of anti-nucleocapsid (indicative of past infection) and total receptor binding domain (indicative of past infection or vaccination) antibodies was 71.0% (confidence interval [CI]: 67.8-74.2) and 98.4% (CI: 97.5-99.3), respectively. 66.7% (CI: 63.4-70.0) of the population shows hybrid immunity, but only 43.2% in those 80 and over. CONCLUSIONS: The high proportion of hybrid immunity detected is relevant for public health strategies. A second vaccination booster was advisable in the elderly population.


Subject(s)
COVID-19 , SARS-CoV-2 , Aged , Humans , Seroepidemiologic Studies , Spain/epidemiology , Cross-Sectional Studies , COVID-19/epidemiology
4.
J Clin Epidemiol ; 155: 118-128, 2023 03.
Article in English | MEDLINE | ID: covidwho-2293921

ABSTRACT

OBJECTIVES: Producing living guidelines requires making important decisions about methods for evidence identification, appraisal, and integration to allow the living mode to function. Clarifying what these decisions are and the trade-offs between options is necessary. This article provides living guideline developers with a framework to enable them to choose the most suitable model for their living guideline topic, question, or context. STUDY DESIGN AND SETTING: We developed this guidance through an iterative process informed by interviews, feedback, and a consensus process with an international group of living guideline developers. RESULTS: Several key decisions need to be made both before commencing and throughout the continual process of living guideline development and maintenance. These include deciding what approach is taken to the systematic review process; decisions about methods to be applied for the evidence appraisal process, including the use of unpublished data; and selection of "triggers" to incorporate new studies into living guideline recommendations. In each case, there are multiple options and trade-offs. CONCLUSION: We identify trade-offs and important decisions to be considered throughout the living guideline development process. The most appropriate, and most sustainable, mode of development and updating will be dependent on the choices made in each of these areas.


Subject(s)
Decision Making , Humans , Consensus
5.
J Med Virol ; 95(4): e28739, 2023 04.
Article in English | MEDLINE | ID: covidwho-2292851

ABSTRACT

Supervised machine learning (ML) methods have been used to predict antibody responses elicited by COVID-19 vaccines in a variety of clinical settings. Here, we explored the reliability of a ML approach to predict the presence of detectable neutralizing antibody responses (NtAb) against Omicron BA.2 and BA.4/5 sublineages in the general population. Anti-SARS-CoV-2 receptor-binding domain (RBD) total antibodies were measured by the Elecsys® Anti-SARS-CoV-2 S assay (Roche Diagnostics) in all participants. NtAbs against Omicron BA.2 and BA4/5 were measured using a SARS-CoV-2 S pseudotyped neutralization assay in 100 randomly selected sera. A ML model was built using the variables of age, vaccination (number of doses) and SARS-CoV-2 infection status. The model was trained in a cohort (TC) comprising 931 participants and validated in an external cohort (VC) including 787 individuals. Receiver operating characteristics analysis indicated that an anti-SARS-CoV-2 RBD total antibody threshold of 2300 BAU/mL best discriminated between participants either exhibiting or not detectable Omicron BA.2 and Omicron BA.4/5-Spike targeted NtAb responses (87% and 84% precision, respectively). The ML model correctly classified 88% (793/901) of participants in the TC: 717/749 (95.7%) of those displaying ≥2300 BAU/mL and 76/152 (50%) of those exhibiting antibody levels <2300 BAU/mL. The model performed better in vaccinated participants, either with or without prior SARS-CoV-2 infection. The overall accuracy of the ML model in the VC was comparable. Our ML model, based upon a few easily collected parameters for predicting neutralizing activity against Omicron BA.2 and BA.4/5 (sub)variants circumvents the need to perform not only neutralization assays, but also anti-S serological tests, thus potentially saving costs in the setting of large seroprevalence studies.


Subject(s)
COVID-19 , Humans , COVID-19/prevention & control , COVID-19 Vaccines , Reproducibility of Results , SARS-CoV-2 , Seroepidemiologic Studies , Machine Learning , Antibodies, Neutralizing , Antibodies, Viral
6.
Bone Marrow Transplant ; 58(5): 567-580, 2023 05.
Article in English | MEDLINE | ID: covidwho-2276520

ABSTRACT

The kinetics of SARS-CoV-2 reactive IgG antibodies after full vaccination and booster in allogeneic and autologous stem cell transplantation (allo-HSCT, ASCT) and chimeric antigen receptor T-cell therapy (CAR-T) are of utmost importance for estimating risk of infection. A prospective multicenter registry-based cohort study, conducted from December 2020 to July 2022 was used to analyze antibody waning over time, booster effect and the relationship of antibody response and breakthrough infection in 572 recipients (429 allo-HSCT, 121 ASCT and 22 CAR-T cell therapy). A significant decline in antibody titers was observed at 3 and 6 months after full vaccination in recipients without pre-vaccine SARS-CoV-2 infection, whereas recipients infected prior to vaccination showed higher and stable antibody titers over time. In poor responders, a booster dose was able to increase antibody titers in 83% of allo-HSCT and 58% of ASCT recipients but not in CART-T cell recipients [0%] (p < 0.01). One-year cumulative incidence of breakthrough infection was 15%, similar among cell therapy procedures. Immunosuppressive drugs at the time of vaccination [hazard ratio (HR) 1.81, p = 0.0028] and reduced intensity conditioning (HR 0.49, p = 0.011) were identified as the only conditions associated with different risk of breakthrough infection in allo-HSCT recipients. Antibody titers were associated with breakthrough infection and disease severity. No death was observed among the 72 breakthrough infections. Antibody level decay after the first two vaccine doses was common except in recipients with pre-vaccination SARS-CoV-2 infection. Poorly responding allo-HSCT recipients showed a response advantage with the booster as compared to ASCT and, especially, the null response found in CAR-T cell recipients. Antibody titers were positively correlated with the risk of breakthrough SARS-CoV-2 infection which was mainly driven by the immunosuppression status.


Subject(s)
COVID-19 , Hematopoietic Stem Cell Transplantation , Receptors, Chimeric Antigen , Humans , SARS-CoV-2 , Cohort Studies , Prospective Studies , Transplantation, Autologous , Antibodies, Viral , Vaccination , Breakthrough Infections , Cell- and Tissue-Based Therapy , Transplant Recipients
7.
J Clin Epidemiol ; 155: 108-117, 2023 03.
Article in English | MEDLINE | ID: covidwho-2271556

ABSTRACT

OBJECTIVES: To describe the key features of a continual evidence surveillance process that can be implemented for living guidelines and to outline the considerations and trade-offs in adopting different approaches. STUDY DESIGN AND SETTING: Members of the Australian Living Evidence Consortium (ALEC), National Institute of Health and Care Excellence (NICE), and the US GRADE Network (USGN) shared their practical experiences of and approaches to establishing surveillance systems for living guidelines. We identified several common components of evidence surveillance and listed the key features and considerations for each component drawn from case studies, highlighting differences with standard guidelines. RESULTS: We developed guidance that covers the initial information needed to support decisions around suitability for living mode and the practical considerations in setting up continual search surveillance systems (search frequency, sources to search, use of automation, reporting the search, ongoing resources, and evaluation). The case studies draw on our experiences with developing guidelines for COVID-19, as well as for other conditions such as stroke and diabetes, and cover a range of practical approaches, including the use of automation. CONCLUSION: This paper highlights different approaches to continual evidence surveillance that can be implemented in living guidelines.


Subject(s)
COVID-19 , Australia , COVID-19/epidemiology , Pandemics , Decision Making
8.
Diagn Microbiol Infect Dis ; 105(2): 115847, 2022 Nov 02.
Article in English | MEDLINE | ID: covidwho-2240682

ABSTRACT

We assessed the diagnostic performance of the Biofire® Filmarray® Pneumonia Plus panel (FA-PP) compared to standard culture in Intensive Care Unit patients with suspected ventilator-associated lower respiratory tract infection in the COVID-19 era. We determined whether its implementation in routine diagnostic algorithms would be cost-beneficial from a hospital perspective. Of 163 specimens, 96 (59%) returned negative results with FA-PP and conventional culture, and 29 specimens (17.8%) were positive with both diagnostic methods and yielded concordant qualitative bacterial identification/isolation. Thirty-nine specimens (23.9%) gave discordant results (positive via FA-PP and negative via culture). Real-life adjustments of empirical antimicrobial therapy (EAT) after FA-PP results resulted in additional costs beyond EAT alone of 1868.7 €. Adequate EAT adjustments upon FA-PP results would have resulted in a saving of 6675.8 €. In conclusion, the data presented supports the potential utility of FA-PP for early EAT adjustment in patients with ventilator-associated lower respiratory tract infection.

9.
Clin Microbiol Infect ; 2022 Sep 15.
Article in English | MEDLINE | ID: covidwho-2229361

ABSTRACT

OBJECTIVES: To compare the RNA loads of severe acute respiratory syndrome coronavirus 2 in nasopharyngeal specimens collected from patients with breakthrough coronavirus disease 2019 (COVID-19) caused by the Delta variant with those in specimens collected from patients with breakthrough COVID-19 caused by the Omicron variant. METHODS: A retrospective, observational study was conducted, including 240 consecutive adult out-patients, of whom 121 (74 females; median age, 40 years) had COVID-19 due to the Omicron variant and 119 (65 females; median age, 48 years) had COVID-19 caused by the Delta variant. The viral RNA load was quantitated using the TaqPath COVID-19 Combo Kit (Thermo Fisher Scientific, Waltham, MS, USA). The viability platinum chloride reverse transcription-PCR assay was used to discriminate between potentially infectious viral particles and free (encapsidated) viral RNA. RESULTS: Overall, the viral RNA loads were significantly higher (p 0.003) for the Omicron variant (median, 8.1 log10 copies/mL; range, 4.0-10.9 log10 copies/mL) than for the Delta variant (median, 7.5 log10 copies/mL; range, 3.0-11.6 log10 copies/mL). A trend towards higher viral loads was noticed for Omicron compared with that for Delta across the following time frames since vaccination: 16-90 days (median, 6.83 vs. 5.88 log10 copies/mL, respectively; range, 3.91-10.68 vs. 3.67-9.66 log10 copies/mL, respectively; p 0.10), 91-180 days (median, 8.09 vs. 7.46 log10 copies/mL, respectively; range, 4.30-10.92 vs. 3.03-11.56 log10 copies/mL, respectively; p 0.003) and 181-330 days (median, 8.56 vs. 8.10 log10 copies/mL, respectively; range, 6.51-10.29 vs. 3.03-10.61 log10 copies/mL, respectively; p 0.11). The platinum chloride treated or untreated reverse transcription-PCR cycle threshold ratio for the nucleocapsid gene as the target was slightly higher for Omicron than for Delta (median, 0.62 vs. 0.57, respectively; range, 0.57-0.98 vs. 0.61-0.87, respectively), although statistical significance was not reached (p 0.10). CONCLUSION: The time elapsed since vaccination has a major impact on the RNA loads of severe acute respiratory syndrome coronavirus 2 in nasopharyngeal specimens, particularly for the Omicron variant. The Omicron variant may be better adapted for replication in the upper respiratory tract than the Delta variant, in which this is unlikely given its more efficient generation of viral particles.

10.
J Med Virol ; : e28284, 2022 Nov 04.
Article in English | MEDLINE | ID: covidwho-2228508

ABSTRACT

Studies investigating the cumulative incidence of and immune status against SARS-CoV-2 infection provide valuable information for shaping public health decision-making. A cross-sectional study on 935 participants, conducted in the Valencian Community (VC), measuring anti-SARS-CoV-2-receptor binding domain-RBD-total antibodies and anti-Nucleocapsid (N)-IgGs via electrochemiluminescence assays. Quantitation of neutralizing antibodies (NtAb) against ancestral and Omicron BA.1 and BA.2 variants and enumeration of SARS-CoV-2-S specific-IFNγ-producing CD4+ and CD8+ T cells was performed in 100 and 137 participants, respectively. The weighted cumulative incidence was 51.9% (95% confidence interval [CI]: 48.7-55.1) and was inversely related to age. Anti-RBD total antibodies were detected in 97% of participants; vaccinated and SARS-CoV-2-experienced (VAC-ex; n = 442) presented higher levels (p < 0.001) than vaccinated/naïve (VAC-n; n = 472) and nonvaccinated/experienced (UNVAC-ex; n = 63) subjects. Antibody levels correlated inversely with time elapsed since last vaccine dose in VAC-n (Rho, -0.52; p < 0.001) but not in VAC-ex (rho -0.02; p = 0.57). Heterologous booster shots resulted in increased anti-RBD antibody levels compared with homologous schedules in VAC-n, but not in VAC-ex. NtAbs against Omicron BA.1 were detected in 94%, 75%, and 50% of VAC-ex, VAC-n and UNVAC-ex groups, respectively. For Omicron BA.2, the figures were 97%, 84%, and 40%, respectively. SARS-CoV-2-S-reactive IFN-γ T cells were detected in 73%, 75%, and 64% of VAC-ex, VAC-n and UNVAC-ex, respectively. Median frequencies for both T-cell subsets were comparable across groups. In summary, by April 2022, around half of the VC population had been infected with SARS-CoV-2 and, due to extensive vaccination, displayed hybrid immunity.

11.
Blood Cancer J ; 13(1): 8, 2023 01 05.
Article in English | MEDLINE | ID: covidwho-2185781

ABSTRACT

The long-term clinical efficacy of SARS-CoV-2 vaccines according to antibody response in immunosuppressed patients such as hematological patients has been little explored. A prospective multicenter registry-based cohort study conducted from December 2020 to July 2022 by the Spanish Transplant and Cell Therapy group, was used to analyze the relationship of antibody response over time after full vaccination (at 3-6 weeks, 3, 6 and 12 months) (2 doses) and of booster doses with breakthrough SARS-CoV-2 infection in 1551 patients with hematological disorders. At a median follow-up of 388 days after complete immunization, 266 out of 1551 (17%) developed breakthrough SARS-CoV-2 infection at median of 86 days (range 7-391) after full vaccination. The cumulative incidence was 18% [95% confidence interval (C.I.), 16-20%]. Multivariate analysis identified higher incidence in chronic lymphocytic leukemia patients (29%) and with the use of corticosteroids (24.5%), whereas female sex (15.5%) and more than 1 year after last therapy (14%) were associated with a lower incidence (p < 0.05 for all comparisons). Median antibody titers at different time points were significantly lower in breakthrough cases than in non-cases. A serological titer cut-off of 250 BAU/mL was predictive of breakthrough infection and its severity. SARS-CoV-2 infection-related mortality was encouragingly low (1.9%) in our series. Our study describes the incidence of and risk factors for COVID-19 breakthrough infections during the initial vaccination and booster doses in the 2021 to mid-2022 period. The level of antibody titers at any time after 2-dose vaccination is strongly linked with protection against both breakthrough infection and severe disease, even with the Omicron SARS-CoV-2 variant.


Subject(s)
COVID-19 , Humans , Female , COVID-19/epidemiology , COVID-19/prevention & control , COVID-19 Vaccines , SARS-CoV-2 , Cohort Studies , Prospective Studies
12.
J Clin Epidemiol ; 155: 84-96, 2023 03.
Article in English | MEDLINE | ID: covidwho-2180257

ABSTRACT

OBJECTIVES: To introduce methods for living guidelines based on practical experiences by the Australian Living Evidence Consortium (ALEC), the National Institute of Health and Care Excellence (NICE), and the Infectious Diseases Society of America (IDSA), with methodological support from the US Grading of Recommendations, Assessment, Development and Evaluations (GRADE) Network. STUDY DESIGN AND SETTING: Members of ALEC, NICE, and the US GRADE Network, convened a working group to share experiences of the methods used to develop living guidelines and outline the key differences between traditional and living guidelines methods. RESULTS: The guidance includes the following steps: 1) deciding if the guideline is a priority for a living approach, 2) preparing for living guideline development, 3) literature surveillance and frequency of searching, 4) assessment and synthesis of the evidence, 5) publication and dissemination, and 6) transitioning recommendations out of living mode. CONCLUSION: This paper introduces methods for living guidelines and provides examples of the similarities and differences in approach across multiple organizations conducting living guidelines. It also introduces a series of papers exploring methods for living guidelines based on our practical experiences, including consumer involvement, selecting and prioritizing questions, search decisions, and methods decisions.


Subject(s)
Quality of Life , Humans , Australia , Guidelines as Topic
14.
J Clin Epidemiol ; 155: 73-83, 2023 03.
Article in English | MEDLINE | ID: covidwho-2165508

ABSTRACT

OBJECTIVES: This article is part of a series on methods for living guidelines, consolidating practical experiences from developing living guidelines. It focuses on methods for identification, selection, and prioritization of clinical questions for a living approach to guideline development. STUDY DESIGN AND SETTING: Members of the Australian Living Evidence Consortium, the National Institute of Health and Care Excellence and the US Grading of Recommendations, Assessment, Development and Evaluations Network, convened a working group. All members have expertize and practical experience in the development of living guidelines. We collated methods, documents on prioritization from each organization's living guidelines, conducted interviews and held working group discussions. We consolidated these to form best practice principles which were then edited and agreed on by the working group members. RESULTS: We developed best practice principles for (1) identification, (2) selection, and (3) prioritization, of questions for a living approach to guideline development. Several different strategies for undertaking prioritizing questions are explored. CONCLUSION: The article provides guidance for prioritizing questions in living guidelines. Subsequent articles in this series explore consumer involvement, search decisions, and methods decisions that are appropriate for questions with different priority levels.


Subject(s)
Quality of Life , Humans , Australia , Guidelines as Topic
15.
J Med Virol ; 95(1): e28397, 2023 01.
Article in English | MEDLINE | ID: covidwho-2157850

ABSTRACT

The information provided by SARS-CoV-2 spike (S)-targeting immunoassays can be instrumental in clinical-decision making. We compared the performance of the Elecsys® Anti-SARS-CoV-2 S assay (Roche Diagnostics) and the LIAISON® SARS-CoV-2 TrimericS IgG assay (DiaSorin) using a total of 1176 sera from 797 individuals, of which 286 were from vaccinated-SARS-CoV-2/experienced (Vac-Ex), 581 from vaccinated/naïve (Vac-N), 147 from unvaccinated/experienced (Unvac-Ex), and 162 from unvaccinated/naïve (Unvac-N) individuals. The Roche assay returned a higher number of positive results (907 vs. 790; p = 0.45; overall sensitivity: 89.3% vs. 77.6%). The concordance between results provided by the two immunoassays was higher for sera from Vac-N (Ï°: 0.58; interquartile ranges [IQR]: 0.50-0.65) than for sera from Vac-Ex (Ï°: 0.19; IQR: -0.14 to 0.52) or Unvac-Ex (Ï°: 0.18; IQR: 0.06-0.30). Discordant results occurred more frequently among sera from Unvac-Ex (34.7%) followed by Vac-N (14.6%) and Vac-Ex (2.7%). Antibody levels quantified by both immunoassays were not significantly different when <250 (p = 0.87) or <1000 BAU/ml (p = 0.13); in contrast, for sera ≥1000 BAU/ml, the Roche assay returned significantly higher values than the DiaSorin assay (p < 0.008). Neutralizing antibody titers (NtAb) were measured in 127 sera from Vac-Ex or Vac-N using a S-pseudotyped virus neutralization assay of Wuhan-Hu-1, Omicron BA.1, and Omicron BA.2. The correlation between antibody levels and NtAb titers was higher for sera from Vac-N than those from Vac-Ex, irrespective of the (sub)variant considered. In conclusion, neither qualitative nor quantitative results returned by both immunoassays are interchangeable. The performance of both assays was found to be greatly influenced by the vaccination and SARS-CoV-2 infection status of individuals.


Subject(s)
COVID-19 Vaccines , COVID-19 , Humans , Luminescence , COVID-19/diagnosis , SARS-CoV-2 , Vaccination , Antibodies, Viral , Immunoglobulin G , Antibodies, Neutralizing , Immunoassay
16.
Microorganisms ; 10(11)2022 Nov 16.
Article in English | MEDLINE | ID: covidwho-2116178

ABSTRACT

The effect of a third vaccine dose (3D) of homologous mRNA vaccine on blood levels of SARS-CoV-2-receptor binding domain (RBD)-total antibodies was assessed in 40 hemodialysis patients (HD) and 21 kidney transplant recipients (KTR) at a median of 46 days after 3D. Anti-RBD antibodies were detected in 39/40 HD and 19/21 KTR. Overall, 3D boosted anti-RBD antibody levels (median: 58-fold increase). Neutralizing antibodies (NtAb) against the Wuhan-Hu-1, Delta, and Omicron variants were detected in 14, 13, and 11 out of 14 HD patients, and in 5, 5, and 4 out of 8 KTR patients, respectively. The median fold increase in NtAb titers in HD patients was 77, 28, and 5 and 56, 37, and 9 in KTR patients for each respective variant. SARS-CoV-2-S S-IFN-γ-producing CD8+ and CD4+ T-cell responses were detected in the majority of HD (35 and 36/37, respectively) and all KTR (16/16) patients at 3D. Overall, the administration of 3D boosted T-cell levels in both population groups. In conclusion, a homologous mRNA COVID-19 vaccine 3D exerts a booster effect on anti-RBD antibodies, NtAb binding to Wuhan-Hu-1, Delta, and Omicron variants, and SARS-CoV-2-S-IFN-γ-producing T cells in both HD and KTR patients. The magnitude of the effect was more marked in HD than KTR patients.

17.
Syst Pract Action Res ; : 1-26, 2022 Nov 02.
Article in English | MEDLINE | ID: covidwho-2094728

ABSTRACT

This paper reports an ongoing exercise concerning the design of a logistics App to support operations within Farmers' Markets in Mexico. This exercise is part of a wider research agenda focused on 'Supporting Alternative Food Networks' (SAFeNET). This is a research agenda to conceive, build, implement, and develop better-informing decision-making processes that support effective and efficient AFNs (also known as Short Food Supply Chains) logistics operations in a digital environment, through smooth flows of goods and information among producers, AFNs coordinators, and consumers. This view calls for taking a systemic approach to help collectives of people to improve their autonomy and viability. Initial plans were to conduct this collaborative design exercise, using the Viable System Model (VSM) as a conversational tool. Accordingly, a series of face-to-face interviews and a focus group were planned. However, the lockdown due to COVID-19 forced researchers to abandon the face-to-face option and conduct the primary data collection online. The VSM intervention had to be adapted for its use on an online platform, in such a way that the platform would support knowledge building interactively, with a series of participants. This paper describes the format and visual appearance of the online VSM framework, its application, and the lessons learned through this exercise. Two points deserve to be highlighted: First, although the exercise outcome was very valuable for the next stage of the design, the participants' capacity for collective and individual reflection during the workshop was limited. Second, participants continued adding comments via the adopted online visual collaboration platform after the workshop ended, showing an understanding of the process and commitment beyond the researchers' expectations. The outcomes from this experiment are promissory, suggesting that online Systems Thinking interventions deserve further development.

19.
Apuntes ; 49(92):151-182, 2022.
Article in Spanish | ProQuest Central | ID: covidwho-2074807

ABSTRACT

Uno de los principales retos que trajo consigo la pandemia de COVID-19 fue dar continuidad a la educación. En ese contexto, este trabajo se enfoca en la práctica de la educación superior en la disciplina de Ingeniería y sus programas académicos afines con una perspectiva a futuro, motivado por las limitaciones y retos impuestos por la pandemia. Frente a ello, surgió la interrogante de cómo mantener experiencias de aprendizaje activo, vivencial, centradas en el estudiante, y que sean relevantes para desarrollar sus competencias, a pesar de su interacción remota y las frecuentes carencias tecnológicas y de recursos educativos. Así, este trabajo propone un esquema conceptual para guiar el diseño y reflexión de experiencias de aprendizaje con una perspectiva pospandémica. Este esquema está compuesto por seis dimensiones de la innovación y liderazgo educativo para la educación superior: entorno, impacto y vinculación;modelos educativos y cadena de valor;estrategias educativas;formatos de enseñanza, infraestructura y recursos de aprendizaje;acreditaciones;y evaluación del aprendizaje. Adicionalmente, este documento presenta iniciativas que ejemplifican este esfuerzo dentro de la MIT Supply Chain And Logistics Excellence network en Latinoamérica y El Caribe (MIT SCALE LAC) liderada por el Centro de Transporte y Logística del Massachussetts Institute of Technology. Estas iniciativas refieren experiencias de aprendizaje en universidades de Bolivia, México y Perú que han buscado mantener el aprendizaje activo en el contexto de la pandemia, con un vínculo hacia los desafíos contemporáneos de las organizaciones, las comunidades y la sociedad en general en la que viven inmersos los estudiantes.Alternate :One of the main challenges that the COVID-19 pandemic brought was the continuity of education. In this context, this work focuses on analyzing the practice of higher education in the discipline of Engineering and its related academic programs with a future perspective, motivated by the limitations and challenges imposed by the pandemic. To ensure high-quality education, it was relevant to give continuity to the education of students, maintaining active, experiential, student-centered learning experiences that are relevant to developing their skills, despite their remote interaction and frequent technological deficiencies. and educational resources. Thus, this work proposes a conceptual scheme to guide the design and reflection of learning experiences with a post-pandemic perspective. This scheme is composed of six dimensions of innovation and educational leadership for higher education: environment, impact and linkage, educational models and value chain, educational strategies, teaching formats, infrastructure and learning resources, accreditations and learning evaluation. Additionally, this document presents initiatives that exemplify this effort within the MIT Supply Chain And Logistics Excellence network for Latin America and the Caribbean (MIT SCALE LAC), led by the Center for Transportation and Logistics from the Massachusetts Institute of Technology. These initiatives refer to learning experiences in universities in Bolivia, Mexico, and Peru that have sought to maintain active learning in the context of the pandemic, with a link to the contemporary challenges of organizations, communities, and the society in general in which they live. students immersed.

20.
Sustainability ; 14(20):13133, 2022.
Article in English | MDPI | ID: covidwho-2071762

ABSTRACT

This work is about sustainability-related learning experiences for the discipline of supply chain management (SCM) in Higher Education. It arises from the need to motivate students with relevant and interesting activities to improve their learning performance. Higher Education must respond to dynamic demands to keep impactful topics for students, organizations, and society over time. This work addresses the relevance of contemporary challenges in real-world SCM situations concerning Sustainable Development Goals (SDGs). It also provides an actionable framework integrating experiential learning ideas, the ADDIE model for instructional design, the Triple Bottom Line for sustainability, the continuous improvement cycle, and the SDGs into an SCM model. In a case study, the article illustrates the use of this framework for instructional design in a learning experience from an undergraduate course in an Industrial and Systems Engineering program. The application describes the impact of food ecosystems on cities and communities during the COVID-19 crisis. The results suggest positive attainment levels in students' learning outcomes and highly favorable opinions regarding learning relevance, interest, motivation, and the recommendation of the course. Therefore, this work contributes to SCM education by including sustainability-related challenges and disciplinary topics in novel instructional designs that will actively prepare future professionals and decision-makers.

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