COVID-19 Infection Control Research Articles

Assessing the influence of nursing home size and care models on COVID-19 case and mortality rates

IntroductionThis study examines the impact of COVID-19 on older adults in traditional nursing homes, Green Houses (GHs), and Continuing Care Retirement Communities-Nursing Homes (CCRCNHs). MethodsCOVID-19 cases and deaths from CMS and LTCFocus data across 11 states from 6/2020 to 9/2022 were used, and Poisson regressions to compare care settings while adjusting for covariates. ResultsCCRCNH and GH residents were older (84.4 and 83.1 years) than those in traditional NHs (77.5 and 77.6 years, p < 0.0001), with more female and White individuals. COVID-19 risk was higher in CCRCNHs (RR 1.51, 95 % CI 1.10–2.07), large NHs (RR 1.57, 95 % CI 1.14–2.15), and highest in small NHs (RR 1.80, 95 % CI 1.32–2.47). Mortality rates across NH types showed no significant difference. ConclusionThe study shows that smaller, person-centered GHs are more effective in controlling COVID-19 infection, suggesting a need to rethink care models to incorporating GH features for better outcomes.GEORGE2 07-AUG-2024 11:31.

KNOWLEDGE AND BEHAVIOR OF HATTA HOSPITAL HEALTH CARE PROFESSIONALS REGARDING COVID-19 INFECTION PREVENTION AND CONTROL

Healthcare-associated infection represents a public health problem in all countries. COVID-19 patients can rapidly overwhelm the capacities of healthcare systems. As more patients are hospitalized, healthcare workers (HCW) at the frontline of care are at the greatest risk of infection. This study aimed to assess the knowledge and self-reported behavior of healthcare professionals in Hatta Hospital regarding COVID-19 infection prevention and control (IPC) during this emerging infectious disease pandemic. A descriptive cross-sectional study was conducted in Hatta hospital, United Arab Emirates (UAE) among one hundred HCWs using a self-administered questionnaire based on UAE National and World Health Organization (WHO) IPC guidelines. Of the study participants, 66% received COVID-19 IPC training inside Hatta hospital. The mean knowledge and behavior scores were 75.7% ± 9.4 and 87.6% ± 5.9, respectively. Knowledge score and behavior score were not related to gender (p= 0.232, 0.091, respectively ) and to work position (p= 0.882, 0.994, respectively), however, they were related to the previous contact with COVID -19 patients (p= 001, 0.011, respectively ). Nonetheless, gaps in IPC knowledge and behavior have been identified and need improvement. This includes donning and doffing of PPE and optimal use of protective measures especially respirators (N95 or FFP2).

Emergency Knowledge Translation, COVID-19 and indoor air: evaluating a virtual ventilation and filtration consultation program for community spaces in Ontario

BackgroundAn October, 2021 review of Public Health Ontario's COVID-19 guidance for congregate settings such as shelters and long-term care homes demonstrated that this guidance did not include references to ventilation or filtration. In April 2022, an interdisciplinary team with expertise in indoor air quality (IAQ), engineering, epidemiology, community programming and knowledge translation launched a virtual ventilation and filtration consultation program for community spaces in Toronto, Ontario. The program gives people working in community spaces direct access to IAQ experts through 25-min online appointments. The program aims to help reduce the risk of COVID-19 transmission in community spaces, and was designed to help compensate for gaps in public health guidance and action.MethodsRepresentatives from participating organizations (n. 27) received a link to an online survey via email in April 2023. Survey questions explored the impacts of the program on topics such as: purchase and use of portable air filters; maintenance and use of bathroom fans; and, maintenance and modification of HVAC systems. Survey participation was anonymous, and no demographic information was collected from participants.ResultsRepresentatives from 11 organizations completed the survey (40%). Of those who responded, nine (82%) made changes as a result of the program, with eight (73%) making two or more changes such as purchasing portable air filters and increasing routine maintenance of HVAC systems.ConclusionsWhen presented with brief access to expert support and tailored plain language guidance, people working in community spaces increased their use of ventilation and filtration strategies for COVID-19 infection prevention and control.

Healthcare workers’ compliance with COVID-19 prevention and control measures at De Martino Hospital, Mogadishu, Somalia: a cross-sectional study

BackgroundHealthcare workers are a high-risk group for COVID-19 and protecting them is crucial for healthcare delivery. Limited studies have explored compliance with infection prevention and control (IPC) practices among Somali healthcare workers. This study aimed to determine compliance with IPC practices among healthcare workers in De Martino Public Hospital, Somalia.MethodsA cross-sectional study was conducted at the De Martino Public Hospital, Mogadishu, Somalia from August to October 2022, with the participation of 204 healthcare workers (response rate = 97%). Compliance was assessed using responses to 25 questions on a five-point Likert-type scale, and a median score of 20 was used to dichotomize compliance scores. A chi-square test and logistic regression analysis were performed to check the associations between healthcare workers’ socio-demographic information, IPC-related factors, work conditions and practices on COVID-19, and IPC compliance during healthcare interventions using SPSS 23 version.ResultsIn total, 58.3% of the participants had good compliance with IPC. There were significant associations between IPC compliance and the type of healthcare worker (doctors and doctor assistants: 72.3%, nurses and paramedical staff: 67.3%, non-clinical staff: 5.7%, p < 0.01). After adjusting for potential confounding factors, compared to non-clinical staff, doctors and doctor assistants (OR: 12.11, 95% CI: 2.23–65.84) and nurses and paramedical staff (OR: 21.38, 95% CI: 4.23–108.01) had higher compliance with IPC measures. There were no significant associations between compliance and sex, marital status, vaccination status, or smoking (p > 0.05 for all).ConclusionsLow levels of compliance with COVID-19 IPC measures were observed among hospital workers. Prioritizing awareness campaigns and behavior change interventions, especially among non-clinical staff, is crucial for effective COVID-19 infection prevention and control within hospitals.

The Use of Online Consultation Systems or Remote Consulting in England Characterized Through the Primary Care Health Records of 53 Million People in the OpenSAFELY Platform: Retrospective Cohort Study.

The National Health Service (NHS) Long Term Plan, published in 2019, committed to ensuring that every patient in England has the right to digital-first primary care by 2023-2024. The COVID-19 pandemic and infection prevention and control measures accelerated work by the NHS to enable and stimulate the use of online consultation (OC) systems across all practices for improved access to primary care. We aimed to explore general practice coding activity associated with the use of OC systems in terms of trends, COVID-19 effect, variation, and quality. With the approval of NHS England, the OpenSAFELY platform was used to query and analyze the in situ electronic health records of suppliers The Phoenix Partnership (TPP) and Egton Medical Information Systems, covering >53 million patients in >6400 practices, mainly in 2019-2020. Systematized Medical Nomenclature for Medicine-Clinical Terminology (SNOMED-CT) codes relevant to OC systems and written OCs were identified including eConsultation. Events were described by volumes and population rates, practice coverage, and trends before and after the COVID-19 pandemic. Variation was characterized among practices, by sociodemographics, and by clinical history of long-term conditions. Overall, 3,550,762 relevant coding events were found in practices using TPP, with the code eConsultation detected in 84.56% (2157/2551) of practices. Activity related to digital forms of interaction increased rapidly from March 2020, the onset of the pandemic; namely, in the second half of 2020, >9 monthly eConsultation coding events per 1000 registered population were registered compared to <1 a year prior. However, we found large variations among regions and practices: December 2020 saw the median practice have 0.9 coded instances per 1000 population compared to at least 36 for the highest decile of practices. On sociodemographics, the TPP cohort with OC instances, when compared (univariate analysis) to the cohort with general practitioner consultations, was more predominantly female (661,235/1,087,919, 60.78% vs 9,172,833/17,166,765, 53.43%), aged 18 to 40 years (349,162/1,080,589, 32.31% vs 4,295,711/17,000,942, 25.27%), White (730,389/1,087,919, 67.14% vs 10,887,858/17,166,765, 63.42%), and less deprived (167,889/1,068,887, 15.71% vs 3,376,403/16,867,074, 20.02%). Looking at the eConsultation code through multivariate analysis, it was more commonly recorded among patients with a history of asthma (adjusted odds ratio [aOR] 1.131, 95% CI 1.124-1.137), depression (aOR 1.144, 95% CI 1.138-1.151), or atrial fibrillation (aOR 1.119, 95% CI 1.099-1.139) when compared to other patients with general practitioner consultations, adjusted for long-term conditions, age, and gender. We successfully queried general practice coding activity relevant to the use of OC systems, showing increased adoption and key areas of variation during the pandemic at both sociodemographic and clinical levels. The work can be expanded to support monitoring of coding quality and underlying activity. This study suggests that large-scale impact evaluation studies can be implemented within the OpenSAFELY platform, namely looking at patient outcomes.

COVID-19 infection prevention and control program for aged care providers: a quasi-experimental study of Telegram-based training

ABSTRACT Given the high turnover of care workers in residential aged care facilities, continuous training on infection prevention and control (IPC) remains essential even after the COVID-19 pandemic. This study examined the impact of a Telegram-based training on aged care providers’ IPC knowledge, attitudes, self-efficacy. A two-arm, pre-post quasi-experimental study with repeated measures at week 2 (T1) and week 4 (T2) was conducted for seventy-two (72) participants from 14 residential aged care facilities in Malaysia, with 60 completing the study (30 per arm). All instructional activities and data collection for both groups were delivered through Telegram. The intervention group received a 2-day synchronous workshop (3 h/day) alongside e-materials for a 10-unit IPC module. Primary outcomes were measured using a knowledge test, COVID-19 Elderly Caregiver Questionnaire (attitude component), and an adapted General Self-Efficacy Scale. Telegram’s acceptability was also assessed using an adapted Technology Acceptance Model questionnaire. Results showed that the intervention group had a faster knowledge transfer (91.3%–93.5%; T0-T2 = ∆22.9; p ≤ .002;), higher knowledge scores (∆7.2–16; p ≤ .002; large effect sizes 0.9–1.7), and a small-to-modest increments in self-efficacy (∆13.2; p = .002) and attitude (∆5.2; p = .045). Integrating synchronous sessions into an online program improved knowledge transfer, enhanced self-efficacy and promoted positive attitudes by enabling real-time interpersonal communication and instant feedback. Telegram proved effective for mobile learning in aged care settings with limited resources.

Implementation of COVID-19 infection control best practices in nursing homes amid the pandemic

BackgroundThe COVID-19 pandemic has claimed around 170,000 lives among nursing home residents and staff in the United States through April 2023. In a cluster randomized controlled trial (RCT) with 136 nursing homes, we delivered training to improve COVID-19 infection control best practices. We sought to assess the implementation of infection control practices in participating nursing homes.MethodsConcurrent with the delivery of the RCT (January-November 2021), we surveyed nursing home administrators (NHAs, n = 38) at baseline and 6-month follow-up. Using validated items from the Centers for Disease Control and Prevention (CDC), the surveys inquired about 80 infection control best-practice activities (yes/no). The survey also asked seven scales corresponding to inner setting factors that may have impacted implementation. We assessed changes in infection control practices and inner setting factors between baseline and 6-month follow-up.ResultsOverall, the implementation of 11 best practices changed over time. NHAs reported an increase in the availability of informational materials for residents and families (84% vs. 100%, p = 0.031), the use of alcohol-based hand sanitizer over soap (76% vs. 97%, p = 0.008), and the development of contingency plans for increased postmortem care (53% vs. 82%, p = 0.013). The implementation of four best-practice visitation policies and three communal restrictions decreased between baseline and 6-month follow-up (all p < 0.05). Regarding inner setting factors, only culture stress (perceived strain, stress, and role overload) increased between surveys (mean scores: 3.14 vs. 3.58, p = 0.004).ConclusionThis study was among the first to report changes in implementing COVID-19 infection control best practices in nursing homes amid the pandemic. Culture stress was an important inner setting factor that may have impacted implementation activities.Trial registrationNCT04499391Date of registrationAugust 3rd, 2020

Novel investigation on adsorption analysis of safranal interacting with boron nitride and aluminum nitride fullerene-like cages: Drug delivery system

This study illustrates the effective control of COVID-19 infection through the adsorption of safranal (SAF) on B16N16 and Al16N16 fullerene-like cages. The SAF adsorption onto the B16N16 and Al16N16 surfaces in gas, water (H2O), and chloroform (CHCl3) environments were assessed using density functional theory (DFT) and time-dependent (TD) density functional theory methods, analyzing the substrates and their complexes. The Al16N16/SAF complex exhibited the most negative binding energy and structural stability in the water phase compared to the B16N16/SAF complex at the PBE0-D3 level. The thermodynamic parameters indicated that the adsorption of SAF onto the fullerene-like cages is exothermic, particularly for the Al16N16/SAF complex. Additionally, the interaction of SAF with the fullerene-like cages in the water phase is more pronounced than in gas and chloroform environments. The complexes' energy gap (Eg) decreases in all three environments compared to the perfect systems, with a significant reduction of over 21 % in all phases. This substantial decrease in the energy gap suggests that the complexes have increased reactivity and sensitivity to SAF, likely due to a significant change in electronic conductivity. The results of molecular docking indicate that the Al16N16/SAF complex in the water phase exhibited a strong binding affinity compared to the other compounds studied. These findings suggest that the Al16N16/SAF complex holds promise as a potential inhibitor for COVID-19 and as a valuable material for biomedical applications and drug delivery systems.

Factors influencing nurses' compliance related to the use of personal protective equipment during the COVID-19 pandemic: A descriptive cross-sectional study.

To determine how nurses' experiences with the coronavirus disease (COVID-19) pandemic affected their knowledge, awareness, and compliance related to the use of personal protective equipment (PPE) during the COVID-19 pandemic in South Korea. A descriptive cross-sectional study. A total of 247 nurses in South Korea participated in this study between May 10 and 19, 2023. An online self-report questionnaire was used to collect data on demographic and occupational characteristics, COVID-19 experience, knowledge, awareness, and compliance related to the use of PPE. Factors affecting compliance were analysed using hierarchical multiple linear regression. Mean age of the nurses was 31.92, and 94.3% were women. Most had a bachelor's degree or higher and the mean clinical experience as a nurse was 6.45 years. Knowledge of the use of PPE was 8.45 out of 10, awareness was 3.52 out of 5, and compliance was 4.28 out of 5. Knowledge and awareness were correlated with compliance related to PPE use. Awareness (β = 0.234, p < 0.001), knowledge (β = 0.218, p < 0.001), experience caring for COVID-19 patients (β = 0.234, p = 0.004), optional fourth dose vaccine (β = 0.150, p = 0.017), clinical experience (β = 0.140, p = 0.022), and COVID-19 infection control education (β = 0.115, p = 0.037) were found to have a significant impact on compliance. During the COVID-19 pandemic, nurses' knowledge and awareness of PPE use was a crucial factor in compliance. factors such as clinical experience, experience in caring for COVID-19 patients, optional vaccination, and completion of COVID-19 education also influenced compliance. We hope that these factors can provide a basis for developing training programs for nurses to respond to future emerging infectious diseases.

Description of control measures, attitudes, and behaviours at a scientific conference with a confirmed COVID-19 case but no reported onward transmission, November 2021 England

BackgroundCOVID-19 (coronavirus disease 2019) outbreaks in workplace settings have been investigated to understand how transmission occurred. However, there is limited data looking at COVID-19 transmission in conference settings in England, particularly where an outbreak did not occur. The aim of this work was to investigate COVID-19 infection risk factors and control measures at a large conference, with a known case but no reported onward transmission to inform prevention of future outbreaks of respiratory infections in conferences and similar settings. MethodsThis cross-sectional study was part of a wider COVID-19 Outbreak Investigation to Understand Transmission (COVID-OUT) study. A two-day in-person conference on SARS-CoV-2 transmission and environment was held at a university conference centre on 17–November 18, 2021, in England, with about 100 delegates. A questionnaire survey was conducted among 50 conference attendees to identify any confirmed cases and understand transmission, history of COVID-19 symptoms, testing and vaccination. ResultsOne person met the definition of a confirmed case at the conference. This case was most likely infectious when attending the conference, however there were no known secondary cases. All respondents reported receiving at least two doses of a COVID-19 vaccine before the conference and an increased frequency of handwashing/sanitising hands during the study period in comparison to before the pandemic. Prior to the conference, a COVID-19 risk assessment including a review of the ventilation at the site was completed. All attendees were advised to take an LFD test before travelling to the conference, wear face coverings, and maintain 1-m distance during the conference. ConclusionA multipronged approach, encouraging attendee behaviours (regular hand washing, mask wearing, being vaccinated against COVID-19) and introducing control measures at the conference site (ventilation, sufficient spacing capacity, combined with prior knowledge of COVID-19 transmission, were effective in limiting the spread of COVID-19 in this setting.

RT-PCR Testi ile doğrulanmış COVID-19 olgularında hızlı antikor testi uyumluluğunun değerlendirilmesi

INTRODUCTION: It was aimed to determine the reliability of rapid antibody detection test (RADT) results and compatibility with RT-PCR assay in the screening and control of COVID-19 infection. METHODS: The retrospective study was performed with the permission of the Ministry of Health and the local ethics committee of our hospital. Between May 2020 and August 2021, 624 health staffs laboratory results were recorded. Data processing hospital (HIS) and laboratory information system (LIS) records of our hospital were used as data collection method. The level of agreement between tests was estimated using Cohen's κ index. Statistical analyzes were performed using SPSS open source software. RESULTS: The mean age of the participants in the study was 28,46 ± 2,35. 54% were female (337), 46% (n=287) were male, and they had no additional disease. Both rapid antibody testing and RT-PCR tests were negative in 86% (n=540) of all tests. Two nasopharyngeal specimens were collected from each case to perform the RADT and RT-PCR. 13,6% (n=102) of the included patients had positive RT-PCR results. The RADT detected 84 of the 102 RT-PCR-positive cases and there were no false positive results. Overall sensitivity and specificity were 84,7% and 100%, respectively. Sensitivity was found &gt;95% in symptomatic cases. DISCUSSION AND CONCLUSION: The Weimi Bio-Tech COVID-19 Ag RADT can be useful in screening for COVID-19, especially in cases in the first or second weeks of symptomatic infection.

The Unprecedented Omicron Surge in Hong Kong: A More Natural or More Man-Induced Tragedy?

COVID-19 infection control in Hong Kong was effective through strict anti-pandemic measures in the first four waves beginning in 2020, although it hurt not only physiological and psychological health but also social and economic activities. However, there was an uncontrollable boom in local Omicron cases and deaths from late January 2022, particularly among the senior population. Epidemiologists bemoaned the low vaccination rate among older adults which attributed to the rapid contagion. This analysis looks into a nexus of causes, and discusses the roles of manpower, medical resources, management, healthcare policies, and the balance between anti-pandemic tactics and individual health. Fundamentally, trust in the government is indispensable to success in combating public health disasters. Medical veterans urge a comprehensive inquiry in order to improve the healthcare system and hence cope with future infectious diseases, which authorities should respond to positively and promptly. Keywords: epidemiology, infectious disease, novel coronavirus, pandemic, public health, SARS-CoV-2

Exploring the impact of recent COVID-19 infection on perfusion and functional parameters derived from gated myocardial perfusion imaging in patients undergoing evaluation for coronary artery disease.

This study seeks to evaluate how recent COVID-19 infection affects myocardial perfusion and functional parameters derived from gated myocardial perfusion imaging in patients undergoing evaluation for coronary artery disease. The goal is to enhance our understanding of COVID-19's influence on the cardiovascular system. Conducted at Farshchian Heart Hospital from 2022 to 2023, this case-control study enrolled patients suspected of coronary artery disease, stratified into two groups: those with confirmed COVID-19 infection within the past 6months (study group) and those without prior COVID-19 infection (control group). Employing a 2-day protocol, stress testing and gated SPECT MPI were performed. Statistical analysis included descriptive statistics, Chi-square test, Student's t test, and Mann-Whitney U test. Among the 86 patients included, 43 were in each group. Significantly higher summed stress core and summed difference score values were observed in the study group compared to the control group (p < 0.05). In addition, the study group exhibited significantly altered global left ventricular ejection fraction, end-diastolic volume, and end-systolic volume (p < 0.05). Non-perfusion findings, including transient ischemic dilation and transient right ventricular visualization, were more prevalent in the study group. Recent COVID-19 infection is associated with impaired myocardial perfusion and altered functional parameters as detected by MPI. These findings underscore the intricate interplay between COVID-19 and cardiovascular health, emphasizing the importance of comprehensive evaluation and management strategies to address cardiac complications in affected individuals. Further research is warranted to elucidate the underlying mechanisms and optimize patient care in the context of COVID-19-associated cardiovascular manifestations.

Norwegian Child Welfare Managers’ perceptions of the impacts of COVID-19 infection control measures upon service functionality: A longitudinal study

This article examines Norway’s child welfare service managers’ perceptions of infection control measures on service functionality. The longitudinal study entailed nine rounds of surveys (N = 153–214) with child welfare managers between April 2020 and September 2021, collected by the Norwegian Directorate for Children Youth and Family Affairs after the onset of the Norwegian lockdown of March 2020. The findings suggest links between the strictness of measures and ability of child welfare services to ensure appropriate service delivery. Lockdown caused significant difficulties for many municipalities, while milder measures had less impact. We discuss some implications for practice with children and families.

The impact of facility and staff characteristics on infection control of COVID-19: Perceptions of elder care home managers in Stockholm, Sweden.

To examine the perceptions of managers of elder care homes on the impact of facility and staff characteristics on infection control of COVID-19. Case study. Six purposively sampled care home managers in the city of Stockholm were interviewed. Through content analysis, three categories and nine subcategories were identified. According to the interviewed care home managers, a home-like environment that allows for isolation of residents and possibilities for staff to get changed and store personal protective equipment outside each resident's room was considered ideal. Experienced employees were reported as invaluable when facing an infectious outbreak. A mix of permanent and temporary staff was considered essential although some thought that temporary staff who work in multiple care homes might negatively influence the spread of infection. Language barriers among staff were considered an obstacle when trying to disseminate information.

Mitigation behaviour analysis to understand the effectiveness of COVID-19 infection control policies in Riau.

To analyse mitigation behaviour in understanding the effectiveness of coronavirus disease-2019 infection control programme. The quantitative, descriptive study was conducted in the Riau province of Indonesia from April to May 2020. After approval from the Faculty of Medicine, Riau University, and comprised individuals of either gender aged 15-69 years. Data was collected using a closed questionnaire generated on Google Forms and distributed through social media using WhatsApp. Data was analysed using SPSS 27. Of the 440 subjects, 304(69.1%) were women, 185(42%) were in the late adolescent age group, and 345(78.4%) had education up to the college level. The mitigation behaviour was appropriate in 263(59.8%) cases at the individual level and 233(53%) at the community level. The mitigation behaviour towards coronavirus disease-2019 infection prevention was appropriate in majority of the subjects at both individual and community levels.

Strategic Optimization of Patient Flow and Staffing Schemes during the COVID-19 Pandemic through Operations Management in a Neonatal Intensive Care Unit.

The COVID-19 pandemic posed challenges in making time-bound hospital management decisions. The University of the Philippines -Philippine General Hospital (UP-PGH) is a tertiary COVID-19 referral center located in Manila, Philippines. The mismatch of increasing suspected or confirmed COVID-19 infected mothers with few documented cases of infected infants has caused significant patient overflow and manpower shortage in its NICU. We present an evaluated scheme for NICU bed reallocation to maximize capacity performance, staff rostering, and resource conservation, while preserving COVID-19 infection prevention and control measures. Existing process workflows translated into operational models helped create a solution that modified cohorting and testing schemes. Staffing models were transitioned to meet patient flow. Outcome measurements were obtained, and feedback was monitored during the implementation phase. The scheme evaluation demonstrated benefits in (a) achieving shorter COVID-19 subunit length of stay; (b) better occupancy rates with minimal overflows; (c) workforce shortage mitigation with increased non-COVID workforce pool; (d) reduced personal protective equipment requirements; and (e) zero true SARS-CoV-2 infections. Designed for hospital operations leaders and stakeholders, this operations process can aid in hospital policy formulation in modifying cohorting schemes to maintain quality NICU care and service during the COVID-19 pandemic.

Knowledge, attitude, and wearing of personal protective equipment among dental hygienists in regions during the COVID-19 era

Objectives: This study aimed to understand the knowledge, attitude, and wearing of four types of personal protective equipment among dental hygienists based on to the COVID-19 infection control guidelines and to provide basic data on the need to wear these equipment by dental hygienists in dental medical institutions. Methods: Between March 31 and April 26, 2022, 285 dental hygienists working at dental institutions in Busan and Gyeongsang Provinces participated in the study. Results: The higher the knowledge on personal protective equipment, the higher the glove-wearing rate; and the higher the attitude toward personal protective equipment, the higher the KF94 mask-wearing rate. Furthermore, the higher the rate of wearing face shields, the higher the rate of wearing gloves and full-body protective suits; and the higher the rate of wearing gloves, the higher the rate of wearing a full-body protective suit. Conclusions: To prevent cross-infection by dental hygienists in dental medical institutions, it is necessary to have the four types of personal protective equipment at all times and to strengthen comprehensive education on these equipment.

The potential active compounds of Jatropha multifida Linn. as an anti-COVID-19 mouthwash: In silico study

Background: Povidone-iodine 1% mouthwash is one of the products recommended for preventing and controlling COVID-19 infection in dental procedures. Jatropha multifida Linn. has the same antiseptic effect as povidone-iodine. Purpose: The objective is to determine the effectiveness and interaction effect of secondary metabolites from the latex of Jatropha multifida Linn. and povidone-iodine against the main protease (MPro) SARS-CoV-2 and the SARS-CoV-2 spike protein - ACE2 receptors. Methods: The in silico test was used in this study and carried out using the Molegro Virtual Docker software for molecular docking and BIOVIA Discovery Studio and PyMOL for visualization. Results: The results show that secondary metabolite compounds contained in the latex of Jatropha multifida Linn. have a better effectiveness potential in relation to MPro SARS-CoV-2 and SARS-CoV-2 spike protein - ACE2 receptors than povidone-iodine. Conclusion: The latex of Jatropha multifida Linn. shows potential as a preventive and curative therapy for COVID-19 in the in silico study.

SARS-CoV-2 seroprevalence screening study of a children's hospital health care workers.

Health care workers (HCWs) are front line responders to the COVID-19 pandemic, but limited data is available for pediatric HCWs, as the research response has largely focused on adult patients and medical personnel that treat these patients. We conducted a cross-sectional study of SARS-CoV-2 seroprevalence and risk factors in HCWs at a Children's Hospital in CO, USA from September 2020 to April 2021. Pediatric HCWs were defined as clinical care providers and administrative staff. Seroprevalence was determined using the Epitope SARS-CoV-2 anti-Nucleocapsid IgG assay (San Diego, CA) and the Euroimmun SARS-CoV-2 anti-Spike Protein IgG assay. Risk factors and vaccination status were assessed via questionnaire. Overall, 110 HCWs were enrolled, 79 subjects were positive for anti-S antibodies and negative for anti-N antibodies, indicating COVID-19 vaccination. 31 subjects had neither anti-N or anti-S antibodies, indicating no exposure to SARS-CoV-2 and no vaccination. 3/110 had a nucleocapsid serology consistent with a SARS-CoV-2 prior infection. Seroprevalence was observed at 2.7%. It was noted that asthma requiring medication was associated with positive serostatus. During the winter 2020/21, SARS-CoV-2, we found a 2.7% seroprevalence of pediatric HCW at a children's hospital in Colorado. We compared this with publicly available seroprevalence data for seroprevalence rates of pediatric HCWs globally. This suggests that this specific children's hospital COVID-19 personal protective equipment (PPE) and infection control guidelines were effective in limiting SARS-CoV-2 in hospital transmission at the children's hospital prior to the presence of the Delta variant.