A breath of fresh air

Submission content Introduction: This is a story about the day I wheeled a patient outside. I know, it sounds somewhat underwhelming. But little did I know that this short trip down a hospital corridor and beyond the entrance foyer would mark a profound shift in perspective both for me and my patient, which I hope will influence me for the rest of my career. Main Body: "Paul" was in his 50s and severely afflicted by COVID-19, resulting in a protracted ICU admission with a slow and arduous ventilator wean. Throughout his time on the unit, Paul had seen no daylight;no view of the outside world. He was struggling to make progress and was becoming exasperated. His deteriorating mood in turn affected his sleep, which further undermined his progress. Due to COVID-19, visiting was not permitted and Paul's cuffed tracheostomy meant that he couldn't speak to his family. One day, witnessing Paul's psychological decline, I asked him if he fancied a trip outside. Despite initial reluctance, he eventually gave in to some gentle persuasion from the staff nurse, with whom he had developed a close bond. So there we went;Paul, his nurse and me. And as we wheeled his bed through the door into open air, Paul's whole demeanour suddenly changed. He appeared as though the weight of the world had been lifted from his shoulders and his face lit up with awe, a tear emerging in the corner of his eye. In that moment he rediscovered life. Not as a hospital patient, but as a person. Watching the world go by, he remembered what it was like to be a member of the human race, not the subject of endless tests and treatments. He tasted freedom. Conclusion(s): Awakened by his experience of the forgotten outside world, when we eventually returned to the ICU Paul was an entirely different man. To Paul, the trip outside symbolised progress. After weeks of frustration and despair, he finally had a purpose;a motivation to get better. Meanwhile, I was having my own quiet realisation. I now understood what it truly meant to deliver holistic care. It can become all too easy to focus on the clinical aspects;to obsess about the numbers. But in fact, often what matter most to patients are the 'little things', to which no amount of medication is the solution. I now try to consider during my daily review: what matters to this patient? How are they feeling? What are they thinking? What else can I do to help their psychological recovery? And as for me personally? Having witnessed Paul's reaction to the outside world, I suddenly became aware of how little attention I normally pay to the world around me. How little I appreciate the simple ability to walk outside, and the fundamental things we take for granted. Now, when I'm feeling annoyed or frustrated about something trivial, I stop and think of Paul. I then thank my lucky stars for what I have to be grateful for. Ultrasound Ninja.

Integration of climate, transmission, and spread of dengue hemorrhagic fever in endemic areas

Introduction. Dengue Hemorrhagic Fever (DHF) is still a public health problem even in the era of the COVID-19 pandemic in 2020, including in Indonesia. This study aimed to analyze the incidence of DHF based on the integration of climatic factors, including rainfall, humidity, air temperature, and duration of sunlight and their distribution. Materials and Methods. This was an ecological time series study with secondary data from the Surabaya City Health Office covering the incidence of DHF and larva-free rate and climate data on rainfall, humidity, air temperature, and duration of sunlight obtained from the Meteorology and Geophysics Agency (BMKG). Silver station in Surabaya, the distribution of dengue incidence during 2018-2020. Results and Discussion. The results showed that humidity was correlated with the larvae-free rate. Meanwhile, the larva-free rate did not correlate with the number of DHF cases. DHF control is estimated due to the correlation of climatic factors and the incidence of DHF, control of vectors and disease agents, control of transmission media, and exposure to the community. Conclusions. The integration of DHF control can be used for early precautions in the era of the COVID-19 pandemic by control-ling DHF early in the period from January to June in Surabaya. It is concluded that humidity can affect the dengue outbreak and it can be used as an early warning system and travel warning regarding the relative risk of DHF outbreak.Copyright © the Author(s), 2023.

Mechanistic investigation of direct photodegradation of chloroquine phosphate under simulated sunlight.

Chloroquine phosphate (CQ) is an antiviral drug for Coronavirus Disease 2019 and an old drug for treatment of malaria, which has been detected in natural waters. Despite its prevalence, the environmental fate of CQ remains unclear. In this study, the direct photodegradation of CQ under simulated sunlight was investigated. The effect of various parameters such as pH, initial concentration and environmental matrix were examined. The photodegradation quantum yield of CQ (4.5 × 10-5-0.025) increased with the increasing pH value in the range of 6.0-10.0. The electron spin resonance (ESR) spectrometry and quenching experiments verified that the direct photodegradation of CQ was primarily associated with excited triplet states of CQ (3CQ*). The common ions had negligible effect and humic substances exhibited a negative effect on CQ photodegradation. The photoproducts were identified using high-resolution mass spectrometry and the photodegradation pathway of CQ was proposed. The direct photodegradation of CQ involved the cleavage of the C-Cl bond and substitution of the hydroxyl group, followed by further oxidation to yield carboxylic products. The photodegradation processes were further confirmed by the density functional theory (DFT) computation for the energy barrier of CQ dichlorination. The findings contribute to the assessment of the ecological risk associated with the overuse of Coronavirus drugs during global public health emergencies.

Decreased level of vitamin D in Post- COVID-19 patients compared to a control group

Before the COVID-19 pandemic started Vitamin D was discussed as a preventative strategy in acute respiratory tract infections. There is a growing evidence of beneficial effects of vitamin D supplementation in COVID-19 patients. The term post-COVID-19 syndrome (PCS) describes new, returning or ongoing symptoms more than 12 weeks after COVID-19 infection which cannot be explained by any other disorders or illnesses. The most common symptoms of PCS includes fatigue, difficulty breathing, memory/concentration/sleep problems persistent cough, muscle aches, depression, and others. We conducted a retrospective analysis of vitamin D level in a PCS cohort without hospitalisation. Taking of blood samples was part of the routine assessment in PCS consultation hours. We found significant lower vitamin D levels in the PCS cohort compared to a non-COVID control group. Within the non-COVID cohort there were no differences regarding vitamin D levels. Our results recorded for the first-time decreased vitamin D values in a PCS cohort compared to a control group. There are several potential reasons for these observations. The decrease could be the consequence of overcoming the infection by consumption of vitamin D. The reduction could also be the consequence of a longer duration of illness without exposure to sunlight or malnutrition. Similarly, reduced outdoor exercise during the pandemic with its restriction could have influenced vitamin D levels. Finally, reduced physical activity because of ongoing PCS symptoms like fatigue or exercise intolerance might be a possible explanation for the drop in vitamin D levels.

Covid-19 Mppt Algorithm Application to Solar Energy Conversion System

Alternative energy alternatives to traditional energy sources like coal and fossil fuels include solar PV and wind energy conversion systems. The solar and wind energy conversion system's maximum power may be obtained by activating the converters. There are several MPPT (Maximum Power Point Tracking) regulating methods for solar and wind energy conversion systems. For solar PV energy conversion systems, this study suggests two MPPT controlling techniques: Covid-19 MPPT and FLC-based MPPT. The two MPPT methods that are suggested are put into practise using MATLAB. The first Covid-19 approach that has been developed combines aspects of hill climbing and progressive conductance methods. Calculate the direction of the perturbation for the PV modules' operation using the incremental conductance approach. The method of ascending hills is straightforward and involves fewer variables. When dI/dV equals the incremental conductance, the Maximum Power Point (MPP) is attained using the incremental conductance approach. In the hill climbing approach, the MPP is determined by comparing the power in the present and the past. Both incremental conductance and change of power are taken into account in the proposed Covid-19 MPPT regulating approach to obtain the MPP. With this hybrid approach, solar PV generates the most electricity possible under all conditions of temperature and irradiance. As a result, the planned Covid-19 technique moves forward as intended and swiftly reaches the MPP.Copyright © 2022, Anka Publishers. All rights reserved.

Vitamin D: Physiology, clinical applications, dietary sources, and requirements

Vitamin D, the sunshine vitamin, is essential for bone health and reducing risk of acute and chronic diseases, including autoimmune diseases, cancers, heart disease, type II diabetes, neurocognitive dysfunction and infectious diseases including COVID-19. Vitamin D deficiency is one of the most common nutritional deficiencies worldwide. Vitamin D status is determined by measuring 25-hydroxyvitamin D in the blood. To maintain a normal level of at least 30ngmL−1 (75nmolL−1) as recommended by the Endocrine Society Guidelines on Vitamin D, infants up to 1 year need 400–1000IUs, children 600IU–1000IU, adults 1500–2000IU of vitamin D daily. Obese adults require 2–3 times more vitamin D to satisfy their requirement because of the vitamin D being diluted in the body fat and not available. This can be accomplished by receiving sensible sun exposure in combination with ingesting foods that either naturally contain or are fortified with vitamin D along with a vitamin D supplement. © 2023 Elsevier Ltd. All rights reserved

Tillandsia-Inspired Composite Materials for Atmospheric Water Harvesting

Atmospheric water harvesting (AWH) is a potentially promising small-scale approach to alleviate the water crisis in arid or semiarid regions. Inspired by the asymmetric structure of tillandsia leaves, a plant species native to semiarid regions, we report the development of a bioinspired composite (BiC) to draw moisture for AWH applications. With the advent of the post-COVID era, the nonwoven materials in used masks are discarded, landfilled, or incinerated along with the masks as medical waste, and the negative impact on the environment is inevitable. The nonwoven sheet has porosity, softness, and certain mechanical strength. We innovatively developed BiCs, immobilizing hygroscopic salt with a nonwoven mask for fast vapor liquefaction and using a polymer network to store water. The resulting BiC material manages to achieve a high-water adsorption capacity of 1.24 g g-1 under a low-moderate humidity environment and a high-water release ratio of ca. 90% without the use of photothermal materials, while maintaining high structural integrity in cyclic testing. © 2023 American Chemical Society.

Daylight photodynamic therapy at home

Daylight photodynamic therapy (DPDT) is an established treatment for field-change actinic keratoses (AK) with high rates of satisfaction and success. In recent times there has been a push within the healthcare industry to reduce avoidable clinic time and complement it with community-based healthcare, including self-administration therapies. The importance of 'decentralized' healthcare and at-home therapies has been emphasized by the recent COVID-19 pandemic - access to treatments is restricted and many patients are not receiving the appropriate care in an attempt to minimize hospital-based treatments. In this project, we deconstructed DPDT and by utilizing principles of design and the concept of realistic medicine, transformed it into a user-friendly, environmentally conscious and engaging at-home therapeutic option. Information on protocols and best practice was obtained from clinical colleagues and a map of the patient pathway was outlined. The treatment was broken down and re-formed into simple steps, taking care with the number of instructions to prevent confusion. The physical form of the at-home kit was designed to facilitate the required materials for DPDT, while being simple and methodical to follow. Steps were separated into individual numbered sections, with only the materials needed at each step visible. Simple graphics are displayed alongside relevant instructions, with colouring to highlight importance. The at-home kit was iteratively improved with input from end users. As part of this initiative the DPDT athome kit is designed and prototyped in order to be posted directly to the user. In trialling this kit preclinically, the theoretical patient journey could be visualized, starting with the unboxing of the kit, then followed by the guides and directed procedure. Through feedback, iterations to the design have subsequently been made that efficiently translate the clinical procedure into a successful at-home design. One of the key principles of realistic medicine to consider is the reduction of waste. In this kit we have, where possible, used recycled and recyclable materials, and are in the process of incorporating medically approved biodegradable gloves, which will instantly reduce a high fraction of the nonrecyclable excess. Implementation of the kit in routine clinical practice will provide important feedback allowing further iterations to the design of the kit. Involving patients directly with the development work and continuously responding to the patient experience will significantly improve the final design of the at-home kit. Helping to implement an option to take this important treatment away from a hospitalized environment represents a paradigm shift in the possible delivery of DPDT and can be useful to optimize treatment delivery on a per-patient basis.

Impact of COVID‐19‐Related Air Traffic Reductions on the Coverage and Radiative Effects of Linear Persistent Contrails Over Conterminous United States and Surrounding Oceanic Routes

The radiative effects of the large‐scale air traffic slowdown during April and May 2020 due to the international response to the COVID‐19 pandemic are estimated by comparing the coverage (CC), optical properties, and radiative forcing of persistent linear contrails over the conterminous United States and two surrounding oceanic air corridors during the slowdown period and a similar baseline period during 2018 and 2019 when air traffic was unrestricted. The detected CC during the slowdown period decreased by an area‐averaged mean of 41% for the three analysis boxes. The retrieved contrail optical properties were mostly similar for both periods. Total shortwave contrail radiative forcings (CRFs) during the slowdown were 34% and 42% smaller for Terra and Aqua, respectively. The corresponding differences for longwave CRF were 33% for Terra and 40% for Aqua. To account for the impact of any changes in the atmospheric environment between baseline and slowdown periods on detected CC amounts, the contrail formation potential (CFP) was computed from reanalysis data. In addition, a filtered CFP (fCFP) was also developed to account for factors that may affect contrail formation and visibility of persistent contrails in satellite imagery. The CFP and fCFP were combined with air traffic data to create empirical models that estimated CC during the baseline and slowdown periods and were compared to the detected CC. The models confirm that decreases in CC and radiative forcing during the slowdown period were mostly due to the reduction in air traffic, and partly due to environmental changes.Alternate :Plain Language SummaryContrails produced by aircraft flying in cold but humid air both warm the atmosphere by reducing infrared radiation emitted back into space and cool it by increasing reflected sunlight. Due to the decrease in air traffic during the first months of the COVID pandemic, fewer satellite‐detectable contrails were produced compared to pre‐pandemic times, and thus the radiative effects of contrails were also diminished. But changes in the overall temperature and humidity at aircraft cruise altitudes also affect contrail formation and might explain at least some of the observed decrease in contrail coverage during April and May 2020. Analysis of satellite imagery showed that the thickness and ice‐crystal size of the contrails during the COVID period did not change much from pre‐pandemic contrails. The regional contrail coverage was accurately simulated from a combination of the estimated air traffic activity at cruise altitude and the probable frequency of when atmospheric conditions were favorable for contrail formation. This simulation confirms that most of the decrease in contrails and their radiative effects during the COVID‐related slowdown period were due to the reduction in air traffic, and to a lesser extent to changes in temperature and humidity at cruise altitude during April and May 2020.

Study of the Relationships between COVID-19, Associated Diseases, and Vitamins

Background: Some vitamins play a beneficial role in the immune system and certain diseases may be associated with an increase in the number of COVID-19 cases and mortality. Objective(s): In this work, we aim to verify a possible relationship between vitamin A, vitamin D, sunlight, and COVID-19 cases and mortality. We also aim to study the relationship between chronic diseases and COVID-19 in the world. Method(s): We consulted online databases (Johns Hopkins, World Life Expectancy, NASA, and World Health Organization) and used SPSS (v23) for statistical analysis. Result(s): We found that countries with the highest number of cases and deaths by COVID-19 are the countries with the highest death rates from different types of cancer and multiple sclerosis. Besides, the relationship between cancer death rate and COVID-19 is not biased by the life expectancy. We also found that the low solar incidence and low vitamins A and D levels can be related to the number of cases and deaths by COVID-19. Conclusion(s): Our findings suggest a relationship between different cancer types and multiple sclerosis death rates and COVID-19. We also recommend that vitamins D and A may play a protective role in COVID-19 infection.Copyright © 2021 Bentham Science Publishers.

Influence of sunlight on the association between 25-hydroxyvitamin D levels and sleep quality in Brazilian adults: A population-based study.

OBJECTIVES: This study aimed to evaluate the association of vitamin D with sleep quality during the COVID-19 pandemic and the influence of daily sunlight on this association. METHODS: This cross-sectional, population-based study among adults stratified by multistage probability cluster sampling was conducted from October to December 2020 in the Iron Quadrangle region of Brazil. The outcome was sleep quality, evaluated by the Pittsburgh Sleep Quality Index. Vitamin D (25-hydroxyvitamin D) concentrations were determined by indirect electrochemiluminescence and a deficiency was classified as 25(OH)D < 20 ng/mL. To assess sunlight, the average daily sunlight exposure was calculated and was classified as insufficient when less than 30 min/d. Multivariate logistic analysis was used to estimate the association between vitamin D and sleep quality. A directed acyclic graph was used to select minimal and sufficient sets of adjustment variables for confounding from the backdoor criterion. RESULTS: In a total of 1709 individuals evaluated, the prevalence of vitamin D deficiency was 19.8% (95% CI, 15.5-24.9%), and the prevalence of poor sleep quality was 52.5% (95% CI, 48.6-56.4%). In multivariate analysis, vitamin D was not associated with poor sleep quality in individuals with sufficient sunlight. Moreover, in individuals with insufficient sunlight, vitamin D deficiency was associated with poor sleep quality (odds ratio [OR], 2.02; 95% CI, 1.10-3.71). Furthermore, each 1-ng/mL increase in vitamin D levels reduced the chance of poor sleep quality by 4.2% (OR, 0.96; 95% CI, 0.92-0.99). CONCLUSIONS: Vitamin D deficiency was associated with poor sleep quality in individuals with insufficient exposure to sunlight.

COVID-19 Containment Measures-a Step Back for Walking Mobility? A 2-Year, 60-Country Analysis of the Apple Mobility Data.

BACKGROUND: COVID-19 containment measures curb viral spread but may hamper walking mobility. As a low daily step count is associated with increased noncommunicable diseases and mortality, assessing the relationship between pandemic responses and walking mobility can help trade-off public health measures. We investigated the association between containment stringency and walking mobility across 60 countries in the period between January 21, 2020 and January 21, 2022 and modeled how this could impact mortality hazard. METHODS: Walking mobility was measured through the Apple Mobility Trends, containment measures stringency index through the Oxford COVID-19 response tracker (which considers local policies on closures, healthcare, and economy), and meteorological data by National Oceanic and Atmospheric Administration weather stations. Walking mobility was regressed over stringency in a mixed-effect model with weather variables as covariates. The impact of stringency on all-cause mortality due to reduced mobility was modeled based on regression results, prepandemic walking mobility, and the association between step count and all-cause mortality hazard. RESULTS: Across the 60 countries, the average stringency was 55 (9) (mean [SD]) out of 100. Stringency was negatively associated with walking mobility; a log-linear model fitted data better than a linear one, with a regression coefficient for stringency on ln (walking mobility) (95% confidence interval) of  -1.201 × 10-2 (-1.221 × 10-2 to -1.183 × 10-2). Increasing stringency, thus decreasing walking mobility, nonlinearly incremented the modeled all-cause mortality hazard by up to ∼40%. CONCLUSIONS: In this study, walking mobility was negatively associated with containment measures stringency; the relationship between stringency, mobility, and the subsequent impact on health outcomes may be nonlinear. These findings can help in balancing pandemic containment policies.

Disposable face masks release micro particles to the aqueous environment after simulating sunlight aging: Microplastics or non-microplastics?

This study focuses on characterizing microplastics and non-microplastics released from surgical masks (SMs), N95 masks (N95), KN95 masks (KN95), and children's masks (CMs) after simulating sunlight aging. Based on micro-Raman spectrum analysis, it was found that the dominant particles released from masks were non-microplastics (66.76–98.85%). Unfortunately, CMs released the most microplastics, which is 8.92 times more than SMs. The predominant size range of microplastics was 30–500 µm, and the main polymer types were PP and PET. Compared with the whole SMs, the microplastic particles released from the cutting-SMs increased conspicuously, which is 12.15 times that of the whole SMs. The main components of non-microplastics include β-carotene, microcrystalline cellulose 102, and eight types of minerals. Furthermore, non-microplastics were mainly fibrous and fragmented in appearance, similar to the morphology of microplastics. After 15 days of UVA-aging, the fibers of the face layers had cracks to varying degrees. It was estimated that these four types of masks can release at least 31.5 trillion microplastics annually in China. Overall, this study demonstrated that the masks could release a large quantity of microplastics and non-microplastics to the environment after sunlight aging, deserving urgent attention in the future study. © 2022 Elsevier B.V.

An investigation into the aging of disposable face masks in landfill leachate

Due to the excessive use of disposable face masks during the COVID-19 pandemic, their accumulation has posed a great threat to the environment. In this study, we explored the fate of masks after being disposed in landfill. We simulated the possible process that masks would experience, including the exposure to sunlight before being covered and the contact with landfill leachate. After exposure to UV radiation, all three mask layers exhibited abrasions and fractures on the surface and became unstable with the increased UV radiation duration showed aging process. The alterations in chemical groups of masks as well as the lower mechanical strength of masks after UV weathering were detected to prove the happened aging process. Then it was found that the aging of masks in landfill leachate was further accelerated compared to these processes occurring in deionized water. Furthermore, the carbonyl index and isotacticity of the mask samples after aging for 30 days in leachate were higher than those of pristine materials, especially for those endured longer UV radiation. Similarly, the weight and tensile strength of the aged masks were also found lower than the original samples. Masks were likely to release more microparticles and high concentration of metal elements into leachate than deionized water after UV radiation and aging. After being exposed to UV radiation for 48 h, the concentration of released particles in leachate was 39.45 muL/L after 1 day and then grew to 309.45 muL/L after 30 days of aging. Seven elements (Al, Cr, Cu, Zn, Cd, Sb and Pb) were detected in leachate and the concentration of this metal elements increased with the longer aging time. The findings of this study can advance our understanding of the fate of disposable masks in the landfill and develop the strategy to address this challenge in waste management. Copyright © 2023 Elsevier B.V.

The One-Hundred-Year Anniversary of the Discovery of the Sunshine Vitamin D3: Historical, Personal Experience and Evidence-Based Perspectives.

The discovery of a fat-soluble nutrient that had antirachitic activity and no vitamin A activity by McCollum has had far reaching health benefits for children and adults. He named this nutrient vitamin D. The goal of this review and personal experiences is to give the reader a broad perspective almost from the beginning of time for how vitamin D evolved to became intimately involved in the evolution of land vertebrates. It was the deficiency of sunlight causing the devastating skeletal disease known as English disease and rickets that provided the first insight as to the relationship of sunlight and the cutaneous production of vitamin D3. The initial appreciation that vitamin D could be obtained from ultraviolet exposure of ergosterol in yeast to produce vitamin D2 resulted in the fortification of foods with vitamin D2 and the eradication of rickets. Vitamin D3 and vitamin D2 (represented as D) are equally effective in humans. They undergo sequential metabolism to produce the active form of vitamin D, 1,25-dihydroxyvitamin D. It is now also recognized that essentially every tissue and cell in the body not only has a vitamin D receptor but can produce 1,25-dihydroxyvitamin D. This could explain why vitamin D deficiency has now been related to many acute and chronic illnesses, including COVID-19.

Low incidence of vitamin D levels deficiency in anesthesiology residents: A cross-sectional, retrospective study

Background: Vitamin D deficiency is now a major global health problem. The prevalence of vitamin D deficiency in Indonesia is 60-90% in various studies. Age, race, sunscreen use, medication, and malabsorption diseases are all factors that affect vitamin D levels. Recent studies also show the relation between COVID-19 and vitamin D deficiency in severity and disease mortality. Vitamin D deficiency causes skeletal and extra-skeletal consequences. With limited studies on vitamin D levels of anesthesiology residents in Indonesia, we aim to determine the average vitamin D level and the affecting factors in this population. Materials and Methods: Sixty-nine anesthesiology residents working in a tertiary care hospital were enrolled in this study. The participants were asked to complete the questionnaire, and blood samples were drawn to measure serum 25(OH)D. The factors that influence vitamin D levels were recorded for analysis. Statistical analysis was performed using SPSS version 20. Results: The mean vitamin D level in anesthesiology residents was 39.99 ng/mL. There were no significant relationships between vitamin D levels among anesthesiology residents with vitamin D consumption, high-calcium foods, frequency of exercise, history of COVID-19 infection, comorbidities, and duration of exposure to sunlight. Conclusion: Prevalence of vitamin D deficiency/insufficiency was low among anesthesiology residents. Vitamin D levels were optimal in professionals who are taking vitamin D supplements. © 2022 National Journal of Clinical Anatomy ;Published by Wolters Kluwer - Medknow.

Top lesson from COVID for solar geoengineering: anticipatory research is needed

This perspective article argues that anticipatory research into possible "emergency" response measures such as solar geoengineering will increase knowledge, and thus confidence, in any future decisions to either deploy or reject these technologies. Similarities between COVID and climate can reveal some perspective on the benefits of anticipatory vaccine research for anticipatory for solar geoengineering research. Although we deeply hope governments will aggressively reduce emissions and scale up adaptation efforts in time to avoid the worst climate impacts, we argue that the benefits of anticipatory solar geoengineer research currently outweigh the risks of not moving research forward.

Self-cleaning wearable masks for respiratory infectious pathogen inactivation by type I and type II AIE photosensitizer.

Although face masks as personal protective equipment (PPE) are recommended to control respiratory diseases with the on-going COVID-19 pandemic, improper handling and disinfection increase the risk of cross-contamination and compromise the effectiveness of PPE. Here, we prepared a self-cleaning mask based on a highly efficient aggregation-induced emission photosensitizer (TTCP-PF6) that can destroy pathogens by generating Type I and Type II reactive oxygen species (ROS). The respiratory pathogens, including influenza A virus H1N1 strain and Streptococcus pneumoniae (S. pneumoniae) can be inactivated within 10 min of ultra-low power (20 W/m2) white light or simulated sunlight irradiation. This TTCP-PF6-based self-cleaning strategy can also be used against other airborne pathogens, providing a strategy for dealing with different microbes.

How does Austria sleep? Sleeping habits and sleep problems before and during Corona

In the talk I discuss the sleeping habits and sleep problems before and during the Corona pandemic. An alarming increase in sleep problems from 6-year-old primary school children to adolescents and older adults is shown. Half of the interviewed adult Austrians (N=968) sleep less than 7 hours and only 31% classify themselves as "good sleepers". Changes due to the Corona pandemic and lockdown measures are also found across different cultural groups (Austria/Germany, Brazil, Greece, Cuba, Ukraine) and show, on the one hand, a high level of anxiety due to the pandemic (78% of respondents). In addition, in non-system-relevant jobs we see a consistent later going to bed and an extension of sleep times on working days (13 min daily), which in total lead to a reduced "social jetlag". People in system-relevant jobs also go to bed later and get up later, but show no increase in sleep time on weekdays and even a reduction in sleep time on days off (cf. Florea et al., 2021);overall, they also show a reduction in social jetlag, albeit to a lesser extent. We find cultural differences only of a general nature in the sense that people in Greece and Ukraine go to bed and get up later than the other cultural groups studied. Among children and adolescents (N= 2,232), we find 74.8% less physical activity during the Corona pandemic, 44.2% less exposure to daylight and 85% a strong increase in smartphone/tablet use during the pandemic or lock-downs. In addition, a shift of the sleep-wake rhythm to later times (for 94%) & more bedtime, and yet a subjective deterioration in sleep quality is also evident in that data. An alarming number of 33.3-45.3% depending on the age group now even subjectively report sleep problems during the pandemic (cf. Bothe et al., in preparation).

Assessment of Knowledge and Lifestyle Pattern during COVID-19 Pandemic in Al-Qunfudhah’s Locality: In Saudi Arabia

BACKGROUND: The COVID-19 pandemic continues to pose significant challenges to nations. The Saudi Arabia government aimed to mitigate the spread of COVID-19 through different health strategies and policies that influence the population’s health and lifestyle. AIM: This study aimed to assess the knowledge and awareness of the adult Saudi Arabian people and residents on the coronavirus pandemic and examine their association with dietary habits. METHODS: A cross-sectional study was conducted in Al-Qunfudhah’s locality – Kingdom of Saudi Arabia from September 13 to October 15. Data collection was implemented using a questionnaire divided, into four sections: The first section was directed at the sociodemographic characteristics of the participants;the second was dedicated to assessing the individual’s knowledge about COVID-19;the third section for assessing the lifestyle pattern of COVID-19;the fourth assessed the dietary intake using food frequency questionnaires. RESULTS: A total of 400 respondents;Saudis (78%) and residential population (22%) were included in this study. Knowledge about COVID-19 was high (94%) among the participants, primarily obtained from the traditional media platforms and social media. The majority (91%) of the respondents have complied with regular usage of precautionary tools, in addition, physical activity and exposure to sunlight were practiced regularly during the lockdown, by (43%), (49.8%.), respectively. Approximately half of the participants (56.5 %) experienced a change in food habits during the period of confinement. The results revealed a correlation between nutritional awareness and food consumption style for fruits, dietary fibers, traditional drinks, fish, and nuts. CONCLUSION: The respondents have adopted healthier dietary behaviors during the COVID-19 confinement through a closer approach toward the Med Diet. The knowledge of eating habits and the practice of physical activity should guide the authorities and educational agencies to propose strategies that could encourage a balanced and healthy diet (MD) and physical activity practice.