Safe Supply Research Articles

Model Proposal for Ammunition Demand Forecasting and Ammunition Distribution Network Design: Military Unit Application

During the war, the safe provision of the required ammunition at the desired place and time can affect the fate of the war and even the country. Determining the amount of ammunition to be needed in the war is as important as planning its distribution. Two problems are important research topics in the field of military logistics. A two-stage methodology is presented in the study to solve these problems. In the first stage, an analytical approach based on suitability tests is presented to estimate the amount of ammunition that military artillery units will need based on past general data, and ammunition requirements for possible battles are estimated. In the second stage, a distribution network design is carried out for the distribution of ammunition from the ammunition depot to the deployed artillery units. This distribution network also includes reverse logistics activities, as it is necessary to collect the waste left by the ammunition used by the artillery units. In order to achieve this in the study, a Multi-Period Multi Depot Simultaneous Pick Up&Delivery Vehicle Routing Problem Model has been developed. The results obtained as a result of the solution of the model have been examined in detail and analyzed by comparing with the current situation.

Thermal characteristics of phase change heat storage process and waste heat recovery of hydrogen fuel cell: a numerical study

The utilization of waste heat recovery in fuel cells through heat storage can result in favorable energy efficiency gains and environmental advantages, while simultaneously improving the reliability of energy provision in photovoltaic systems. However, the low thermal conductivity of phase change materials dramatically hinders access to a safe, stable, and efficient renewable energy supply. To improve thermal efficiency, this paper proposes a novel triangle branch fin with straight, arc-curved, and corrugated shapes. Combined with metal nanoparticles, the heat transfer of phase change material is enhanced. A series of simulations are performed to judge the novel design based on fin shape and distribution based on the energy charging characteristics. The propagation of the melting front as well as the development of temperature and velocity during the entire process of melting are compared and analyzed. Results reveal that the straight triangle branch fin outperforms the other five cases with basic straight fin, corrugated fin, curved fin, arc-shaped fin, and corrugated branch fin regarding the melting performance, resulting in a 39.79 % reduction in melting time. The findings guide the evaluation and operation of heat storage tanks with fin enhancements.

Residency training programs to support residents working in First Nations, Inuit, and Métis communities

BackgroundTo gain culturally appropriate awareness of First Nations, Inuit and/or Métis Health, research suggests that programs focus on sending more trainees to First Nations, Inuit and/or Métis communities Working within this context provides experiences and knowledge that build upon classroom education and support trainees’ acquisition of skills to engage in culturally safe healthcare provision. This study examines residents' and faculty members' perceptions of how residency training programs can optimize First Nations, Inuit and/or Métis health training and support residents in gaining the knowledge, skills, and experiences for working in and with First Nations, Inuit and/or Métis communities.MethodsA qualitative approach was used, guided by a relational lens for collecting data and a constructivist grounded theory for data interpretation. Theoretical sampling was used to recruit 35 participants from three main study sites across two western Canadian provinces. Recruitment, data collection, and analysis using constructivist grounded theory occurred concurrently to ensure appropriate depth of exploration.ResultsOur data analysis revealed five themes: Five themes were generated: Complexity of voluntourism as a concept; Diversity of knowledge representation required for developing curriculum; Effective models of care for First Nations, Inuit and/or Métis health; Essential traits that residents should have for working in First Nations, Inuit and/or Métis communities; and Building relationships and trust by engaging the community.ConclusionsFirst Nations, Inuit and/or Métis Health should be prioritized within Canadian postgraduate medical education. Equipping trainees to provide holistic care, immersing in and learning from First Nations, Inuit and/or Métis communities is essential for developing the next generation of clinicians and preceptors. We present educational recommendations for residency programs to optimize First Nations, Inuit and/or Métis health educational experiences and provide residents with skills to provide effective and culturally safe care.

Robust fault detection and classification in power transmission lines via ensemble machine learning models

Transmission lines are vital for delivering electricity over long distances, yet they face reliability challenges due to faults that can disrupt power supply and pose safety risks. This research introduces a novel approach for fault detection and classification by analyzing voltage and current patterns across transmission line phases. Leveraging a comprehensive dataset of diverse fault scenarios, various machine learning algorithms—including Random Forest (RF), K-Nearest Neighbors (KNN), and Long Short-Term Memory (LSTM) networks—are evaluated. An ensemble methodology, RF-LSTM Tuned KNN, is proposed to enhance detection accuracy and robustness. Results indicate that RF-LSTM Tuned KNN achieves a remarkable accuracy of 99.96% on a multi-label dataset, outperforming RF (97.50%) and KNN (96.55%). In binary classification, KNN attains the highest accuracy of 99.85%, closely followed by RF at 99.72%. This methodology provides significant advancements in fault detection capabilities, offering valuable insights for improving grid reliability and stability, and ensuring a more resilient power supply.

Advantages and disadvantages of current human enteric virus surrogates in soils and aquifers.

Groundwater is one of the main sources of drinking water, thus, human enteric viruses in groundwater could pose safety risks. Many enteric viruses enter drinking water sources through irrigation or recharge of contaminated water. It is therefore advised to test the potential transport risk with harmless surrogates before wastewater or recycled water is used for irrigation or groundwater recharge. An ideal virus surrogate should be able to mimic the particle size, the surface properties and the inactivation rate of its target virus and should be easy to detect. Particle size should be the first consideration when selecting a suitable virus surrogate in soil and aquifer. The natural bacteriophages could only mimic the viruses that are inherently similar to themselves, and there is only a limited number of readily available bacteriophages. Therefore, once a certain bacteriophage is chosen for study, its particle size, surface properties and inactivation rate are set and unmodifiable for the experiment. Fluorescent microspheres <200nm could surrogate target viruses in fast-flow subsurface systems, where inactivation can be neglected. However, the current detection limit of fluorescent nanospheres cannot support the detection of small-sized fluorescent microspheres (∼20nm) through porous media without macropores. Newly emerging DNA tracers not only allow controlling the size and surface properties, but also offer a low detection limit (ideally 1 copy of DNA). Investigating new types of DNA tracers that could either simulate or mimic the inactivation rate of target viruses could widen the use of virus surrogates to study groundwater contamination and drinking water supply safety.

Blood donation and post donation care: A clinical update

Donating blood is an essential component of healthcare systems, and it is imperative to administer adequate post-donation care to donors in order to safeguard their health and maintain the blood supply's safety. This brief offers a succinct outline of crucial suggestions for persons who have made a blood donation. After receiving a donation, the initial treatment usually involves taking rest, staying hydrated, and having a light meal to replenish blood volume and glucose levels. Adequate fluid intake is crucial for preventing dehydration and promoting the restoration of blood volume. In order to maintain the health and safety of blood donors and guarantee the excellence of donated blood, recommendations frequently advise following dietary limitations, which may include refraining from alcohol and restricting caffeine use. It is highly recommended to cease smoking, as it enhances general well-being and increases the amount of oxygen in the bloodstream. Donors should vigilantly observe the donation location for any unusual symptoms and promptly seek medical aid if needed. Long-term care prioritizes maintaining good physical well-being by promoting a balanced diet, regular physical activity, and adequate rest. Regular blood donors, particularly women, may require iron supplements to avoid iron deficiency anaemia. Donors must strictly adhere to the recommended time intervals between donations in order to maintain blood safety and prevent donor exhaustion. Adhering to post-donation obligations is essential for the well-being of donors, guaranteeing the security of the donated blood, and promoting ongoing blood donation. The objective of present review is to optimise the donor recovery process, mitigate any adverse consequences, and ensure the continuous availability of a safe blood supply for patients in need.

Implications of Climate Change and Food Crisis on Women Farmers in Contemporary Nigeria

Agriculture and food security are two important components of a sustainable future and wellbeing of the people that are adversely affected by climate change and global warming, especially in the growing economies of the world. While agriculture is the mainstay of most of such economies, it serves as an important employer of labour and source of income for the people, and provides the foundation for food security which is the state of having reliable access to sufficient, affordable, safe and nutritious food supply that adequately meets the needs of its users. Climate change and global warming are two important challenges adversely affecting the people (especially the poor and the highly vulnerable female-headed farming households in Africa and particular in Nigeria), as a result of which their livelihoods and wellbeing are increasingly endangered by the scourge and related challenges of low disposable income; poor soil quality (nutrients); high levels of poverty, illiteracy and unemployment; feminization of agriculture; and lack of opportunities for meaningful development. This study examines the inter-links between climate change and food crisis, which breeds food insecurity among the people, especially female-headed farming households in Nasarawa State. The study is a descriptive survey which utilized primary and secondary sources of data, using questionnaires, FGD (Focus Group Discussion), and elite interviews. It posits that climate change is an important driver of socio-economic challenges that affects female-headed farming households more disproportionately than their male counterparts. The study suggests that though climate change is an important global challenge, it is more so among resource-poor farmers that must be appropriately responded to, especially in Africa where its effects are most harsh. The study recommends that gender friendly policies and practices will ensure effective and equitable gender participation in sustainable agriculture essential in food security and wellbeing of the people.

The influence of bank-specific variables on banks’ stability: Evidence from Saudi Arabia

The goal of this study is to find out what makes Saudi Arabian banks unstable by using a panel data analysis with ten banks’ carefully chosen annual data from 2009 to 2022. Based on the fixed effect model, this study indicates that Saudi Arabian bank stability is unaffected by liquidity risk but is statistically and negatively impacted by credit risk and bank size. Conversely, capital adequacy and funding risk positively and statistically impact bank stability in Saudi Arabia. In light of these findings, we strongly recommend making capital adequacy requirements obligatory for bank management, given their beneficial effect on bank stability. This study recommended that bank management adopt practices such as safe loan provision and prompt customer repayment to mitigate credit risk. Bank managers have to guarantee liquidity adequacy in their banks and improve credit standards by increasing client supplemental requirements. While our study found that liquidity risk does not directly affect banks' financial stability, we propose that bank management should also focus on finding effective ways to generate client deposits to enhance financial stability further.

Older people’s social work safe staffing supply and workforce demands analysis: A case study from Northern Ireland

Abstract In the UK, a range of operational tools and policy guidelines regulate staffing in various Health and Social Care sectors. Nonetheless, frameworks to ensure safe staffing in social work remain less advanced. This study focuses on older people’s social work community teams in Northern Ireland due to the high volume of cases and vacancies within these teams. Our findings provide evidence based on actual caseloads (direct work with service users) and workloads at individual, team, and regional levels within this programme of care. The analysis revealed systemic issues that require systemic solutions in relation to staffing supply and service demands. Frontline social workers and managers frequently faced overwhelming worker-to-caseload ratios, routine use of waiting lists, and team vacancies. These findings lay the groundwork for evidence-based strategic planning, guiding the development and enactment of safer and more effective social work policies and legislation in the years ahead. The project was commissioned by the Department of Health, Northern Ireland in preparation for policy and legislative developments expected between 2025 and 2028.

Lifecycle Management of Hydrogen Pipelines: Design, Maintenance, and Rehabilitation Strategies for Canada’s Clean Energy Transition

This paper examines the crucial elements of pipeline-based hydrogen transportation, highlighting the particular difficulties and technical developments required to guarantee the sustainable, effective, and safe supply of hydrogen. This study lists the essential phases of hydrogen pipeline management, from design to repair, as the relevance of hydrogen infrastructure in the worldwide energy transition continues to rise. It discusses the upkeep, monitoring, operation, and rehabilitation procedures for aged pipelines with an emphasis on the cutting-edge techniques and technology used to mitigate the dangers related to hydrogen’s unique features, such as leakage and embrittlement. Together with highlighting the legislative and regulatory frameworks that enable the infrastructure, this paper also discusses the material, economic, and environmental difficulties related to hydrogen pipelines. Lastly, it emphasizes how crucial it is to fund research, create cutting-edge materials, and implement sophisticated monitoring systems to guarantee the long-term dependability and safety of hydrogen pipelines. These initiatives will be crucial in allowing hydrogen’s contribution to the future of renewable energy, together with international collaboration on regulatory standards.

An Empirical Analysis of the Impact of Pesticide and Fertilizer Pollution on Household Income

In agricultural production, agricultural non-point source pollution threatens the safety of water supply and food safety, restricts the sustainable development of the agricultural economy and rural ecological environment, and is the bottleneck of agricultural development in China. To explore the impact of this situation on the real income of rural households, the paper is based on the data from China Family Panel Studies (CFPS) from 2014 to 2018. With the pollution status in agricultural production as the explanatory variable and the total value of household agricultural and sideline products as an explanatory variable, a fixed effect model was established to estimate the influence of fertilizer and pesticide application on labor income level. The results show that the income brought by pesticide and fertilizer input is low efficiency, and some farmers have achieved high yields with low input. In addition, the education level of the agricultural population and the size of the family had no significant effect on this. Considering the output problem, the application of pesticides and fertilizers is necessary, but the cognition that pesticides and fertilizers can increase crop yield and income makes the application of pesticides continue to increase, which is not conducive to the increase of agricultural output value. It is necessary to attach importance to new methods of increasing agricultural production based on the application of small amounts of fertilizers and pesticides and use technological reform and professional agricultural education to promote the rational use of pesticides and fertilizers and achieve rapid development of agriculture.

Effects of probiotic coating and vacuum packaging on the microbial safety and quality of fresh-cut cantaloupe stored at different temperatures.

Fresh-cut cantaloupes are highly susceptible to contamination by foodborne pathogens and spoilage-causing microorganisms. This study evaluated the efficacy of a probiotic coating produced by fermenting Lactiplantibacillus plantarum 299 V in pomelo peel extract in combination with vacuum packaging in controlling the microbial loads of fresh-cut cantaloupe during storage. As temperature abuse is common in transportation and at retail sale of such products in many countries, we evaluated their efficacy at different temperatures. Both the probiotic edible coating and vacuum packaging, when used alone, effectively inhibited microbial growth in fresh-cut cantaloupe at all the tested temperatures. The combination had a statistically significant synergistic effect (p<0.05) on reducing psychrotrophic total counts (4.5±0.3 log lower than control on day 9) and yeast and mold(>3.1 log lower than control on day 9) at 4°C, Listeria monocytogenes (2.9±0.2 log lower than control on day 6) at 12°C, and yeast and mold (3.1±0.7 log lower than control on day 2) and L. monocytogenes (4.6±0.4 log lower than control on day 2) at room temperature (23±2°C). The solution proposed in this study has the potential to increase the resilience of products to temperature abuse, which can impact the safety of the food supply.

Performance Validation and Blood Donation Analysis in Nagqu, Tibet, One of the Highest Cities in the World.

Due to the unique geographical and climatic conditions in Nagqu (Tibet), the blood station laboratory was only fully established and accredited by 2020. This study validated the performance of the laboratory's blood screening system and analyzed recent trends in blood donation and screening effectiveness. Various serum samples were used to assess the performance of hepatitis B, hepatitis C, HIV, and syphilis tests, both serological and nucleic acid tests. Donation data were also collected and analyzed. Serological testing demonstrated excellent sensitivity, specificity, and reproducibility (all 100%), with detection limits for HBsAg, HCV Ab, HIV-1 Ab, HIV-1 p24, and TP Ab of 0.2 IU/mL, 0.013 NCU/mL, 0.25 NCU/mL, 1.25 U/mL, and 1.5 mIU/mL, respectively. Nucleic acid testing systems also achieved 100% reproducibility with precision below 5%. PROBIT analysis revealed the 95% detection limits for HBV DNA, HCV RNA, and HIV-1 RNA as 8.29, 97.14, and 40.52 IU/mL, respectively. The study also found a high rate of unqualified donations for local markers such as ALT, HBsAg, syphilis, and HBV DNA. The validation confirmed the screening system's high sensitivity, specificity, and reproducibility, highlighting the importance of effective predonation checks to ensure a safe blood supply in high-altitude areas.

Research on blood donation and supply of red blood cell products to medical institutions under the spread of COVID-19 disease in Japan.

Due to the spread of SARS-CoV-2 virus infectious disease (COVID-19), blood donation events had to be cancelled, and there were concerns about a decrease in the number of blood donors from late February 2020 in Japan. The purpose of this study is to investigate the numbers of whole blood donation, manufacture and inventory adjustment of red blood cell (RBC) products at the Japanese Red Cross Society (JRCS), and to evaluate the effects of COVID-19 on the donation of blood and the supply of RBC products to medical institutions for transfusion medicine in Japan. We focused on RBC products, which are the most frequently used blood products and are easily reflected under the spread of COVID-19. The status of whole blood donation and RBC product transfusion was investigated based on the data provided by the JRCS from January 2020 to August 2021 on whole blood donation, manufacture and inventory adjustment of RBC products, and supply to medical institutions. Although there were some fluctuations since January 2020, the amount of estimated donated whole blood, manufactured RBC products, inventory, and supply to medical institutions remained almost stable. The reasons are thought to be the contribution of registered repeaters cooperating in blood donation, the accurate prediction of supply and demand by the JRCS, the call for blood donations in accordance with the prediction, and the timely exchange of products between block centers, and the utilization of a safe supply system established previously by the JRCS. As a result, it can be concluded that the stable provision of medical care was possible without depleting the inventory of RBC products even under the spread of COVID-19.

Justification of the scheme of melting ice on the wires of overhead power lines

The article discusses an urgent problem related to the formation of ice and frost deposits on the wires of overhead power lines, which causes significant technical difficulties in ensuring the reliability of power supply, especially in winter. The accumulation of ice and frost on the wires leads to an increase in the weight of the wires, which can cause them to sag, damage insulators, destroy poles, and, as a result, serious accidents on power lines. The causes of accidents in power grids due to ice and frost deposits are analyzed and it is found that their elimination will reduce the probability of damage to overhead power lines from the action of ice loads. However, existing methods of dealing with this problem have a number of disadvantages, such as high cost, low efficiency in certain conditions, and negative environmental impact. The article presents a scheme for melting ice on the wires of overhead power lines by the method of a three-phase short circuit when powered by a power source with a solidly grounded and isolated neutral. This scheme makes it possible to locally increase the temperature of wires to a level sufficient to melt ice and frost, which reduces the risk of emergencies and ensures the uninterrupted operation of the electrical grid. The article provides theoretical justifications for the scheme for melting ice with three-phase short-circuit currents, which confirm its effectiveness. The analysis has shown that the proposed scheme is economically feasible, as it reduces the cost of maintenance and repair of overhead power lines. In addition, it is environmentally friendly, as it does not involve the use of chemicals. Thus, the proposed scheme for melting ice on the wires of overhead power lines is a promising solution for improving the reliability and safety of power supply in winter weather conditions. Its application can significantly increase the efficiency of power grid operation, reduce the number of accidents, and improve the stability of power supply to consumers.

Design study of a camera system for Earth observation as a payload on the small satellite ROMEO

AbstractThe importance of a safe food supply has increased due to climate change and its consequences. The number and severity of floods, droughts and plant diseases are rising which causes massive crop failures. Early and precise detection of plant diseases can lower crop failures as it enables early containment. Moreover, it promotes the targeted use of pesticides to protect the biodiversity. Satellite sensors improve the detection of plant diseases by enabling frequent and extensive vegetation observation. Hence, we present the design of a camera system for Earth observation on small satellites with a focus on the detection of plant diseases. The disease detection of sugar beets was chosen as the primary objective due to their importance for the German agriculture. This work is divided into two parts. First, the spectra of sugar beets are analyzed to determine spectral channels for a camera system. Second, a camera system is defined to capture spectral information within the previously defined wavelength ranges. The spectra of healthy and diseased sugar beets were measured in fields for agricultural research in Central Germany using a portable spectroradiometer. The investigated diseases are Cercospora leaf spot and virus yellows, which are among the most important pathogens worldwide. Based on the measured data, the so-called Normalized Difference Sugar Beet Index (NDSBI) is defined, which is a custom index to detect these diseases. We can prove that this index enables more precise detection of these sugar beet diseases than existing indices like the Normalized Difference Vegetation Index (NDVI). The camera system is designed as a payload for the small satellite Research and Observation in Medium Earth Orbit (ROMEO), which is being developed at the University of Stuttgart’s (US) Institute of Space Systems (IRS). The proposed design fulfills the high radiation requirements as well as the system constraints of mass and volume. Three different options for the camera system are developed: two designs for the development at the US, one with lens optics and one with mirror optics, and an adjusted commercial camera system. All defined camera systems permit the measurement of the NDSBI to precisely detect sugar beet diseases.

Voluntary Blood Donation in Modern Healthcare: Trends, Challenges, and Opportunities.

Voluntary blood donation plays a crucial role in public health by ensuring a stable supply of blood and its components, essential for medical treatments including surgeries, trauma care, and chronic disease management. Voluntary donors, often healthier individuals, enhance the safety of the blood supply and play a vital role in emergency preparedness. Beyond its societal benefits, regular blood donation may offer health advantages for donors, including improved cardiovascular health due to reduced iron levels and psychological benefits stemming from altruism and a sense of social responsibility. Public health initiatives are instrumental in fostering blood donation through education, awareness campaigns, and targeted donor recruitment strategies. These efforts encourage a culture of social responsibility, inspiring community participation and improving overall healthcare system sustainability. Despite these efforts, challenges such as fluctuating donation rates, aging populations, and shifting demographics underscore the need for ongoing initiatives to ensure a sufficient blood supply. As a public health priority, voluntary blood donation demands continuous promotion and innovation to meet the growing demand for blood products and maintain healthcare system resilience. This review highlights the public health significance of voluntary blood donation, with particular focus on its benefits for donors and its role in supporting healthcare systems.

FUNCTIONS OF PROTECTION DEVICES IN THE FIRE SAFETY SYSTEM OF ELECTRICAL INSTALLATIONS

In this article, the goal of the research was achieved regarding the definition of regulatory requirements for fire safety of protection devices in 0.4 kV electrical wiring. This article describes the main functions of protection devices that affect the fire safety of electrical installations, identifies the possibilities of strengthening the functions of protection devices, and substantiates the approach to the formation of further research for the introduction of new functions of protection devices. The article describes the study of the development of automation of processes and the saturation of electronic and electrical equipment in industry and everyday life. Because of this, there is a high degree of increase in the risk of the emergency mode of operation of electrical conductors and the occurrence of burning and fire, which may lead to a rise in the number of accidents in the future. Analysis of Ukrainian and foreign publications shows that the direction of development of power supply systems is infrastructure: p2p market for households, electric car charging networks, demand response services, and the possibility of participation in frequency support in the network and operation in the virtual power plant mode. This will lead to a further increase in requirements for reliability, safety, and protection of power supply, in particular, an increase in the functions of protection devices. The development of digitalization, security, and cloud technologies is marked by constant growth and innovation that are aimed at increasing the efficiency and reliability of the protection of electrical networks. This article also describes some modern trends in surge protection devices as a component of low-voltage network protection devices in the fire safety system of electrical installations. Devices for the protection of low-voltage networks play an important role in ensuring the fire safety of electrical installations. Correct selection, installation, and regular maintenance of these devices significantly reduce fire risks and contribute to the facility's overall safety. Due to the rapid development of the complexity of electrical consumers and requirements for their protection, it is necessary to conduct further research on the introduction of new functions of protection devices to increase their reliability, accuracy, and safety.

Strengthening Cameroon’s Pharmaceutical Supply Chain: Tackling Manpower Shortages, Ensuring Regulatory Compliance, and Mitigating Supply Disruptions

This study investigates the pharmaceutical supply chain in Cameroon, highlighting the shortage of qualified personnel, supply disruptions, and the need for regulatory compliance. It examines socioeconomic disparities, political challenges, and quality concerns within the context of pharmaceutical distribution. The research emphasizes the importance of establishing a reliable supply chain, incorporating effective risk management systems, and promoting greater visibility through real-time information sharing. Additionally, it addresses ethical considerations such as informed consent and confidentiality. Policy interventions and training programs aimed at improving distribution practices are explored to offer recommendations for enhancing the efficiency, reliability, and safety of pharmaceutical supplies in Cameroon. The findings contribute to existing literature and support informed policy decisions for future improvements in similar settings.

A prospective, multi-centric study on the prevalence of dengue, zika and chikungunya in asymptomatic blood donors from different geographical regions of Brazil.

Arboviruses outbreaks are increasing in their frequency, geographical area and extension. Brazil is one of the most affected countries in the world, due to its tropical weather and favourable mosquito proliferation conditions. During outbreaks, the safety of the blood supply is a concern, in spite of the low number of transfusion-transmitted cases with clinical impact. The aim of this study was to evaluate the use of NAT for Dengue, Zika and Chikungunya RNA in actual screening. Blood donors from services located in 4 Brazilian regions were invited to participate in the study and provide an extra blood sample during the collection period between February 7, 2020, and April 4, 2020. Plasma from 21 341 donations was tested in mini pools of 6 by a duplex NAT for Dengue and Chikungunya, in addition to a Zika single assay. Confirmed viremic samples were submitted to an alternative NAT and serological assays. There were 33 (0.15%) Dengue RNA+ and 5 (0.02%) Chikungunya RNA+ donations. The South region showed the highest prevalence of Dengue-infected donors (0.29%). These results are in line with the incidence of these arboviruses on the respective geographical regions. Viremic units were discarded and blood services notified. Screening blood donors for arboviruses during the outbreak season in Brazil reveals a significant number of viremic individuals. Arbovirus NAT testing is feasible and may be incorporated to the current screening policy.