Long COVID, also known as “post-acute sequelae of COVID-19,” affects at least 65 million individuals worldwide with a wide spectrum of symptoms that may last weeks, months, or permanently. Its epidemiology and burden in Africa are unclear. This meta-analysis examines long-term COVID-19 effects in the WHO African Region. A systematic search in several databases was carried out up to 12 February 2023 including observational studies from African countries reporting the cumulative incidence of long COVID signs and symptoms. Only studies conducted in African countries were included. Several sensitivity and meta-regression analyses were performed. Among 1547 papers initially screened, 25 were included, consisting of 29,213 participants. The incidence of any long COVID symptomatology was 48.6% (95% CI 37.4–59.8) as psychiatric conditions were the most frequent, particularly post-traumatic stress disorder reaching a cumulative incidence of 25% (95% CI 21.1–30.4). Higher age (p = 0.027) and hospitalization (p = 0.05) were associated with a higher frequency of long COVID. Long COVID poses a significant burden in Africa, particularly concerning psychiatric conditions. The study recommends identifying at-risk people and defining treatment strategies and recommendations for African long-COVID patients. High-quality studies addressing this condition in African setting are urgently needed.

AbstractThis research attempts to provide a contribution to the study on coastal barrier‐lagoons in the SE Africa generated by sea‐level fluctuations, and climate change during the Late Holocene. To achieve this goal, the grain‐size analysis and morphoscopic description helped to detect cyclic facie sequences with sediments sized over 200 μm mixed with silt, bioclasts and organic matter. Moreover, the magnetic susceptibility and X‐ray diffraction (XRD) analyses displayed over 90% of quartz and isolated mica, feldspar and heavy minerals. Additionally, the X‐ray fluorescence (XRF) results display the interplay between terrigenous (>Ti and Al) and marine influence (S, Cl and ~Ca) over the last ~3,500 cal. yrs. BP. The geochemical tracer fluctuations detected suggest five distinct deposits including beach, washover, lacustrine system, aeolian deflation that rest on top of the Pleistocene palaeodunes, which are tentatively associated with the sea‐level variations, extreme marine events or with local floods. Although the multiproxy data record refers to a study in Bilene‐Mozambique, it is interesting to understand the mechanisms and variables related to the evolutionary dynamics of coastal barrier lagoons generated by sea‐level fluctuations and climate change, especially in the SE Africa.

IntroductionIn Sofala province (Mozambique), young people living with HIV (YPLHIV) are estimated at 7% among people aged 15–24 years. Even though the COVID-19 pandemic threatened HIV health services, data on the impact of COVID-19 on YPLHIV people are lacking. This study aimed at exploring the seroprevalence of SARS-CoV-2 and associated factors among young people based on their HIV status.MethodsA cross-sectional study was conducted, including people aged 18–24 attending a visit at one of the adolescent-friendly health services in Sofala province between October and November 2022. People vaccinated against SARS-COV-2 or YPLHIV with WHO stage III-IV were excluded. A SARS-CoV-2 antibodies qualitative test and a questionnaire investigating socio-demographic and clinical characteristics were proposed. SARS-CoV-2 seroprevalence was calculated with Clopper-Pearson method. The odds ratio (OR) of a positive SARS-CoV-2 antibodies test was estimated through multivariable binomial logistic regression.ResultsIn total, 540 young people including 65.8% women and 16.7% YPLHIV participated in the survey.. The mean age was 20.2 years (SD 2.0). Almost all the sample (96.1%) reported adopting at least one preventive measure for COVID-19. The weighted seroprevalence of SARS-CoV-2 in the whole sample was 46.8% (95%CI 42.6–51.2) and 35.9% (95%CI 25.3–47.5) in YPLHIV. The adjusted OR of testing positive at the SARS-CoV-2 antibodies test was higher in students compared to workers (aOR:2.02[0.95CI 1.01–4.21]) and in those with symptoms (aOR:1.52[0.95CI 1.01–2.30]). There were no differences based on HIV status(aOR:0.663[95%CI 0.406–1.069]). Overall, COVID-19 symptoms were reported by 68 (28.2%) people with a positive serological SARS-CoV-2 test and by 7 (21.7%) YPLHIV (p = 0.527). No one required hospitalization.ConclusionsSARS-CoV-2 seroprevalence was 46.8% without differences in risk of infection or clinical presentation based on HIV status. This result may be influenced by the exclusion of YPLHIV with advanced disease. The higher risk among students suggests the schools’ role in spreading the virus. It’s important to continue monitoring the impact of COVID-19 on YPLHIV to better understand its effect on screening and adherence to treatment.

COVID-19 has tested the organizational capacity of the education system in Mozambique, including the higher education level when it became mandatory to close all face-to-face teaching activities. To respond to this challenge and continue with the noble mission of teaching, the Catholic University of Mozambique implemented a hybrid model, specifically through digital platforms, even though it was aware of the various resource limitations on the part of teachers and students. This strategy would be determinant for a successful path to the purpose of "never stop teaching and learning." This paper attempts to answer questions that arose at introducing this new teaching model during the COVID-19: (i) What skills did teachers have to respond to ICT-mediated teaching? (ii) What strategies were used to circumvent the difficulties arising from COVID-19 for Teaching and Learning? (iii) What kind of skills, difficulty, and behaviour characterized the students to correspond to a 100% online teaching system? and (iv) What platforms and instruments were used to respond to this teaching model? The paper first seeks answers from exploratory interviews with teachers about the use of ICTs in teaching and learning and subsequently presents some challenges in three dimensions (institutions, teachers, and students) of which their consideration can lead to a path in the immersion of the technologization of teaching. In methodological terms, a qualitative approach was used, where interviews were conducted with a sample of teachers from this university who were part of the frontline of the process. The results show that for the case study it was possible, to teach and learn through Moodle platforms, Google Classroom, interacting through Zoom, Google Meet, and using Skype as a communication tool with students.

In recent decades, there has been a perception that the Mozambican forests have been threatened with massive exploitation for commercialization, deforesting vast areas, leading to desertification and contributing to the extinction of some forest species. The present research summarizes the official information obtained by monitoring the country’s natural resources over time and identifying the major types of existing forests in Mozambique. The main objective is to elucidate on the current state of Mozambican forests, analyze change and trends, and characterize the actual distribution of forest species in Mozambique to verify the sustainability of forest resources and their composition. It is a case study of the qualitative descriptive type, with data obtained through a bibliographic research method focusing on scientific articles on the type of forest species existing in Africa and Mozambique and data from official sources of the forests. Various types of forests were identified, such as mopane, mercrusse, semi-deciduous, miombo, and semi-evergreen, including the gallery forest. Forest species with particular relevance were highlighted, such as Afzelia quanzensis, Swartzia madagascariensis, Pterocarpaus angolensis, Combretum imberbe, and Millettia stuhalmannii. Major threats to these natural resources were identified and reported, including anthropogenic activity associated with traditional practices of illegal logging or due to the valuation of other goods of primary necessity, lack of protection and conservation measures, and impacts resulting from climate change. The Munza district is presented as a case study, carrying out a characterization of the forest in this district and identifying the main threats in the study area from 2015 to 2020.

We introduce a novel Natural Language Processing (NLP) task called guilt detection, which focuses on detecting guilt in text. We identify guilt as a complex and vital emotion that has not been previously studied in NLP, and we aim to provide a more fine-grained analysis of it. To address the lack of publicly available corpora for guilt detection, we created VIC, a dataset containing 4622 texts from three existing emotion detection datasets that we binarized into guilt and no-guilt classes. We experimented with traditional machine learning methods using bag-of-words and term frequency-inverse document frequency features, achieving a 72% f1 score with the highest-performing model. Our study provides a first step towards understanding guilt in text and opens the door for future research in this area.

Purpose: The study sought to analyze the impact of cost reduction strategies on purchasing and procurement in Mozambique.
 Methodology: The research was conducted entirely on computers. Secondary data, or data that doesn't require actual observation in the field, are the focus of desk research. Because it requires little more than an executive's time, telephone rates, and directories, desk research is generally seen as a low-cost strategy in comparison to field research. As a result, the research used data that had already been collected and reported. This secondary data was readily available via the internet's digital library and scholarly articles.
 Findings: The results show that cost reduction strategies are effective ways of reducing costs associated with purchasing and procurement. Cost reduction strategies enables companies to reduce costs associated with materials, services, and labor, as well as reduce overhead costs. Additionally, strategic partnerships and the use of technology also help companies reduce costs and optimize their purchasing and procurement process. Overall, cost reduction strategies can be an effective way of reducing costs and improving efficiency.
 Unique Contribution to Theory, Practice and Policy: Future research in the field of purchasing and procurement may be grounded in the competitive advantage theory and the supply chain theory. Policymakers, researchers and academics from all across the world will all stand to gain from this study's findings. Executives in charge of national purchasing and procurement initiatives will also use the study's findings to boost the cost reduction strategies performance across the board. The research suggests that the purchasing and procurement sector should implement cost reduction policies to boost the effectiveness of their primary operations and activities.

This research aimed to assess the added value of sun-dried and parboiled Engraulicypris sardella (usipa) products as a basis for determining their viability in terms of business. To this end, a survey was conducted in Nkhotakota District at 12 sites (beaches), where fresh usipa commonly lands and is processed as sun-dried and parboiled fish. A proportional stratified method was used to determine the number of respondents, followed by a simple random sampling technique to select 57 E. sardella processors. An interview with a structured questionnaire was conducted to collect data from these E. sardella processors. The Hayami method was used to analyze the added value of Usipa products, and the viability of the sun-dried and parboiled processing method was determined on the basis of the revenue/cost ratio. The results of the study show that both sun-dried and parboiled usipa products generate positive added value, being greater for the latter than the former. Thus, sun-dried and parboiled usipa are profitable, with the highest revenue/cost ratio of the two being for parboiled usipa. We conclude that while sun-dried and parboiled usipa are both viable products, the viability of the business is more greatly enhanced when fish is parboiled rather than sun-dried.