Background and objective Healthcare workers (HCWs) are at a higher risk of contracting coronavirus disease 2019 (COVID-19) since they regularly come into direct contact with infected patients and their surroundings. In light of this, it is critical to study the potential risk factors for SARS-CoV-2 infection among HCWs to help determine its transmission patterns and prevent infections among HCWs, as well as healthcare-associated COVID-19. Methods We conducted a case-control study at a tertiary healthcare center from December 2020 to August 2021. HCWs who tested positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19, by RT-PCR were included as cases and those who tested negative for RT-PCR and SARS-CoV-2 antibodies were recruited as controls. We interviewed 316 HCWs (187 cases and 129 controls) by using the WHO questionnaire titled \"Protocol for assessment of potential risk factors for coronavirus disease 2019 among health workers in a health care setting\" to assess infection prevention and control (IPC) knowledge and practices, including the use of personal protective equipment (PPE). The odds ratio (OR) for factors associated with infection was determined by multivariable logistic regression. Results The majority (87.2%) of the cases were symptomatic. Adherence to IPC measures was higher among controls as compared to cases. A significantly higher number of controls used PPE compared to cases. The proportions of HCWs involved in cleaning, patient transport, reception, and catering were higher among cases (37.9%) compared to controls (19.1%). In multivariable analysis, undergoing training on care for COVID-19 patients was associated with a lower risk of infection (OR: 0.40, 95% CI: 0.24-0.69). Conclusions Adherence to IPC and use of PPE were significantly higher among controls as compared to cases. Receiving training in COVID-19 patient care and compliance with IPC measures were associated with a lower risk of COVID-19 infection among HCWs in this study.

Objectives. The unique properties of nanomaterials have turned them into an emerging threat for humans and the environment. This study therefore aimed to review exposure control measures proposed for nanomaterial-involved activities. Methods. This study is based on the published guidelines of different organizations on safe handling of nanomaterials. The search for documents was provided using the keywords \'Exposure controls\', \'Good practices\', \'Working safely\', \'Safe practices\', \'Handling safely\', \'Safety guide\' and \'Safety and health\', combined with \'Nanomaterials\', \'Nanotechnology\' and \'Nanoparticles\' on different databases and websites. Results. Thirty-one guidelines from 27 organizations were included. Most of the guidelines recommended engineering controls, administrative controls and personal protective equipment (PPE). Changing the physical form of nanomaterials or the process, using prevention through design (PtD) and using green chemistry principals were other suggestions to reduce exposure to nanomaterials. Conclusions. Considering the difficulty of implementation and case specificity of the solutions of the first two priorities of the hierarchy of controls (elimination and substitution), the emphasis of the guidelines on the next three priorities for controlling exposure to nanomaterials is understood. The type and method of using PPE and engineering controls should be resolved by referring to cutting-edge articles.

UNASSIGNED: The objective of this study was to detect success and failure factors for the implementation of passive exoskeletons in agriculture. Exoskeletons have been shown to reduce musculoskeletal loads during lab-based manual tasks, but long-term implementation experiences in agriculture are lacking.
UNASSIGNED: We analyzed four intervention studies in agriculture focusing on methodological and contextual reasons why the trials were successful or unsuccessful. The study context, attempted intervention, and data collection of each field trial is compared. In the absence of long-term studies investigating the implementation and effectiveness of exoskeletons in agriculture, a set of multi-week pilot trials were initiated among German market vegetable farms and French vineyards from 2019 to 2022. Participant ratings, farm characteristics (e.g. employment duration and payment scheme) and intervention implementation characteristics (e.g. participation in implementation or language barriers) were analyzed using a mixed-methods approach to identify success and failure factors.
UNASSIGNED: The comparison of the studies showed that despite the organizational issues, there were several practical issues that limit the success of exoskeleton use in agriculture. We observed that participant rejection of the intervention is a major barrier to successfully conducting long-term field trials in agriculture. Factors like pain, discomfort, heat stress, or a lack of perceived benefits have been identified as failure factors but also the implementation process itself.
UNASSIGNED: In addition to careful targeting of trial sites and inclusion of participatory elements in the implementation plan, successful implementation of exoskeletons in agriculture requires fundamental human factors development of the exoskeletons themselves. This will require better matching the physical needs of the workers, the production needs of the tasks, and compatibility with the environment.

Approximately 15% of wastes generated in hospitals is hazardous. Improper handling of this waste renders the remaining fraction infectious which is perilous to the health of hospital workers, patients, visitors and even communities. Sufficient data on medical waste management practices particularly in low-income countries such as Ghana is required for effective monitoring and policy making. This study sought to assess the waste generation rates, waste management practices, frequency of sharp injuries and the knowledge of health-care workers on waste management guidelines in Ho Teaching Hospital in Ghana. Data was collected through observations and questionnaire administration from 100 health-care workers. The results revealed that the total amount of wastes generated was 1.70kg/patient/day (490.62 kg/day) comprising of 57.48%, 33.98% and 8.54% of general, infectious and hazardous wastes respectively. Further investigations showed that 52% of the health-care workers knew about the existence of a hospital waste management policy and 89% attested that they had received training on medical waste management. The existing waste management committee was however, non-functional. Waste segregation at source and the use of color-coded waste receptacles were not strictly followed. Contaminated general wastes were landfilled whiles hazardous wastes were either incinerated or buried. Only 11% of the waste handlers were always completely dressed in personal protective equipment and about 77% of the waste handlers always sustained sharp injuries. Incentivizing the waste management team to ensure strict adherence to a waste management plan would improve waste management at the hospital.

Recently published researches show that 59% of all transmission came from asymptomatic transmission and at the time of diagnosis health-care workers (HCWs) tend to present without respiratory symptoms. These evidences have raised questions on whether an essential policy for use of personal protective equipment (PPE) is the best approach in HCW and other people or not. Therefore, this study conducted to investigate the effectiveness of using face masks and PPE in reducing the spread of COVID-19 in health-care and non-health-care settings. This systematic review and meta-analysis study was prepared according to the preferred reporting items for systematic review and meta-analysis statement and guided by meta-analysis of observational studies recommendations. Searches in databases were conducted from December 2019 to July 2021. Random-effects meta-analysis was performed to investigate the effect of using face masks and PPE on spread of COVID-19. Heterogeneity among studies was assessed using Cochran\'s Q test and the I 2 metrics. In total, 9920 individuals from 14 studies were included in this study. In all settings, application of PPE or any type of masks was associated with reduction in risk of COVID-19 (odds ratio [OR] = 0.44; 95% confidence interval [CI]: [0.29, 0.65]; I 2 = 85.21%). In the HCW subgroup, the protective effect had a combined OR of 0.33 (95% CI: (0.15,0.73), I 2 = 82.61%). Six studies were found protective effects of wearing mask in non-HCWs (OR = 0.58, 95% CI: (0.31, 1.06), I 2 = 85.63%). Results suggest that there is association between face mask/PPE use and reduction of COVID-19.

We present an unusual case of monkeypox (MPOX) virus transmission to a dermatology resident during examination of affected patients. Viral DNA sequencing led to the identification of the most likely contact. This case, along with a review of all published cases so far, emphasizes the possible hazard of MPOX transmission to health care personnel, even when wearing personal protective equipment. It also emphasizes the need for maintaining high index of suspicion when examining patients with new dermatological lesions and strict compliance with the revised Centers for Disease Control and Prevention recommendations for specimen collection from such patients.

The discrepancy between formal arrangements to ensure health security, as assessed in the Global Health Security Index, and COVID-19 outcomes points to a broader problem where formal risk recognition is de-coupled from potentially resource-intensive follow-up policy implementation. Germany is an extreme example of this. Pre-COVID-19, Germany\'s Federal Office of Civilian Protection conducted two pandemic preparation exercises based on scenarios which closely mirrored the current COVID-19 pandemic: (a) a multi-jurisdictional, multi-agency crisis management exercise assuming a global influenza pandemic and (b) a joint federal and expert-agency based risk-analysis assuming the outbreak of a modified severe acute respiratory symptom virus. While informing legal and institutional reforms, key recommendations on storing personal protective equipment (PPE) and disinfectants for front-line staff were subsequently ignored. PPE shortages initially put staff at risk, led to export restrictions on PPE, and later on hampered the country\'s ability to address a second wave of the pandemic. This short paper calls for a fuller exploration of factors which hinder \'\'implementation post-cognition.\'\'.

BACKGROUND: The COVID-19 pandemic is causing management difficulties in the Tunisian healthcare system inventory management and the supply of Personal Protective Equipment (PPE).
OBJECTIVE: Calculate the number of PPE needed for MAMI Hospital Ariana (dedicated hospital to COVID patients) to avoid stock-outs.
METHODS: This study proposed a calculation method of the PPE needs for the intensive care and pneumology departments. We developed a mathematical formulation of the number of PPE needed according to the number of visits per medical and other teams, their types, the number of patients, and the validity of each type of PPE.
RESULTS: Considering as input data: the number of visits for the different intervening teams (medical, paramedical, worker or other), the capacity of the different services (number of beds), the average length of stay of patients, the validity duration of an equipment and urgent visits, the developed model generates the required number of PPE (especially surgical masks, FFP2 masks, disposables gowns and coveralls). This allows to calculate the number of personal protective equipment (PPE) needed by the Mami hospital\'s pharmacy in this period of COVID-19 crisis.
CONCLUSIONS: Our configurable application allowed us to calculate PPE requirements for the intensive care and pneumology departments and estimate their use duration.

COVID-19 has caused a worldwide epidemic, essentially forcing healthcare workers to adapt and innovate in an effort to provide quality patient care while also protecting themselves from potential infection. Current clinical guidelines do not recommend the routine placement of tracheostomies in COVID-19 positive patients. Inevitably, patients who require intubation secondary to COVID-19 related pulmonary infections may require prolonged ventilation, placing the patients at risk for tracheal and laryngeal stenosis, vocal cord paralysis, and ventilation-associated pneumonias among other complications. This case study demonstrates the successful performance of a surgical tracheostomy in a COVID-19 positive patient while additionally discussing the personal protective equipment used by the anesthesia and surgical teams and reviewing recommendations for anesthetic care during tracheostomy in a COVID-19 positive patient.

Aim To investigate the relationship between adherence to preventive behaviors and risk of COVID-19 infection. Methods In this case-control study, 491 participants were selected through convenience sampling. First, the samples of the case group (COVID-19 patients) were selected, and then the control group was matched with the case group based on age, gender, and occupation. The criteria for diagnosing COVID-19 for the case group were self-reported positive PCR test or lung involvement on a chest CT scan. Descriptive statistics were used to summarize the results, and an odds ratio was calculated to quantify the magnitude of the association using a 95% confidence interval (CI) and a p<0.05. Results The results showed that, compared to those who always wear a mask, the risk of contracting SARS-CoV-2 was 3.153 times higher in those who used no masks (95% CI: 0.953-10.434) and 3.779 times higher in those who used masks occasionally (95% CI:1.929-7.37). The participants who never observed physical distancing and handwashing were 2.25 times more likely to get COVID-19 than those who always observed (95% CI:1.719-4.954; OR=2.258). Conclusion Participants who fail in following the protective measures, especially wearing a mask regardless of its type, had a higher risk of COVID-19 infection. Therefore, it is recommended to use a mask consistently, especially during the peak of COVID-19 waves.