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2020, Virology Current Research
Examining a sample of still unfolding epidemiological data relating to the worldwide epidemic of Covid-19, we conclude that a connection with an atmospheric in fall appears increasingly probable.
2020 •
Journal of Epidemiology and Global Health
COVID-19: The Second Wave is not due to Cooling-down in Autumn2021 •
2021 •
In December 2019, the coronavirus disease (COVID-19) was discovered in China, causing many cases and deaths. Several studies have explored the role of environmental factors in the spread of COVID-19, emphasizing the effect of two weather parameters, humidity and temperature. Those parameters are evidently vital affecting outbreaks of infectious respiratory diseases, like influenza, yet such an effect on COVID-19 remains controversial. This review explores the relation between the change in weather-related factors and the transmission of the COVID-19. With seasonal variation from winter to summer and in the absence of adopting thorough public health measures, elevated temperature and humidity might not limit the COVID-19 cases. Hence, we need multidisciplinary strategies and interventions to limit the burden of this pandemic over the healthcare systems.
The American Journal of Tropical Medicine and Hygiene
Asymmetric Relationship between Ambient Air Temperature and Incidence of COVID-19 in the Human Population2022 •
The complexity of transmission of COVID-19 in the human population cannot be overstated. Although major transmission routes of COVID-19 remain as human-to-human interactions, understanding the possible role of climatic and weather processes in accelerating such interactions is still a challenge. The majority of studies on the transmission of this disease have suggested a positive association between a decrease in ambient air temperature and an increase in human cases. Using data from 19 early epicenters, we show that the relationship between the incidence of COVID-19 and temperature is a complex function of prevailing climatic conditions influencing human behavior that govern virus transmission dynamics. We note that under a dry (low-moisture) environment, notably at dew point temperatures below 0°C, the incidence of the disease was highest. Prevalence of the virus in the human population, when ambient air temperatures were higher than 24°C or lower than 17°C, was hypothesized to be...
2022 •
Successive waves of infection by SARS-CoV-2 have left little doubt that this virus will transition to an endemic disease 1,2. Projections of the endemic seasonality of SARS-CoV-2 transmission are crucial to informed public health policy 3. Such projections are not only essential to well-timed interventions and the preparation of healthcare systems for synchronous surges with other respiratory viruses 4, but also to the elimination of seasonality as a confounder in the identification of surges that are occurring due to viral evolution, changes in host immunity, or other non-seasonal factors. However, the less than two-year duration of SARS-CoV-2 circulation, pandemic dynamics, and heterogeneous implementation of interventions have grievously complicated evaluations of its seasonality 5. Here we estimate the impending endemic seasonality of SARS-CoV-2 in global population centers via a novel phylogenetic ancestral and descendent states approach 6 that leverages long-term data on the i...
Environmental Research
COVID-19 and climatic factors: A global analysis2020 •
Background:It is unknown if COVID-19 will exhibit seasonal pattern as other diseases e.g., seasonal influenza. Similarly, some environmental factors (e.g., temperature, humidity) have been shown to be associated with transmission of SARS-CoV and MERS-CoV, but global data on their association with COVID-19 are scarce.Objective: To examine the association between climatic factors and COVID-19.Methods: We used multilevel mixed-effects (two-level random-intercepts) negative binomial regression models to examine the association between 7- and 14-day-lagged temperature, humidity (relative and absolute), wind speed and UV index and COVID-19 cases, adjusting for Gross Domestic Products, Global Health Security Index, cloud cover (%), precipitation (mm), sea-level air-pressure (mb), and daytime length. The effects estimates are reported as adjusted rate ratio (aRR) and their corresponding 95% confidence interval (CI).Results: Data from 206 countries (until April 20, 2020) with ≥100 reported cases each showed no association between COVID-19 cases and 7-day-lagged temperature, relative humidity, UV index, and wind speed, after adjusting for potential confounders, but a positive association with 14-day-lagged temperature and a negative association with 14-day-lagged wind speed. Compared to an absolute humidity <5g/m3, an absolute humidity of 5-10g/m3 was associated with a 23% (95% CI:6-42%) higher rate of COVID-19 cases, while absolute humidity >10g/m3 did not have a significant effect. These findings were robust in the 14-day-lagged analysis.Conclusion: Our results of higher COVID-19 cases (through April 20) at absolute humidity of 5-10g/m3 may be suggestive of a ‘sweet point’ for viral transmission, however only controlled laboratory experiments can decisively prove it.
During the COVID-19 pandemic, analyses on global data have not reached unanimous consensus on whether warmer and humid weather curbs the spread of the SARS-CoV-2 virus. We conjectured that this lack of consensus is due to the discrepancy between global environmental data such as temperature and humidity being collected outdoors, while most infections have been reported to occur indoors, where conditions can be different. Thus, we have methodologically investigated the effect of temperature and relative humidity on the spread of expired respiratory droplets from the mouth, which are assumed to be the main cause of most short-range infections. Calculating the trajectory of individual droplets using an experimentally validated evaporation model, the final height and distance of the evaporated droplets is obtained, and then correlated with global COVID-19 spread. Increase in indoor humidity is associated with reduction in COVID-19 spread, while temperature has no statistically significa...
J. Econ. Lib. vol 9, n. 4, pp. 229-243
SEASONAL DYNAMICS OF COVID-19 IN THE YEAR 2020 AND 20212023 •
This study analyzes the effects of Coronavirus disease 2019 (COVID-19) between April-June 2020 and April-June 2021 in Italy. The findings suggest that the temporal dynamics of COVID-19 is affected by seasonality generating a reduction of effects in summer season. Results are discussed to explain the transmission dynamics of COVID-19 in environment to show lessons learned to face next pandemic similar to COVIOD_19.
International Journal of Environmental Research and Public Health
Modeling and Preliminary Analysis of the Impact of Meteorological Conditions on the COVID-19 EpidemicSince the COVID-19 epidemic outbreak at the end of 2019, many studies regarding the impact of meteorological factors on the attack have been carried out, and inconsistent conclusions have been reached, indicating the issue’s complexity. To more accurately identify the effects and patterns of meteorological factors on the epidemic, we used a combination of logistic regression (LgR) and partial least squares regression (PLSR) modeling to investigate the possible effects of common meteorological factors, including air temperature, relative humidity, wind speed, and surface pressure, on the transmission of the COVID-19 epidemic. Our analysis shows that: (1) Different countries and regions show spatial heterogeneity in the number of diagnosed patients of the epidemic, but this can be roughly classified into three types: “continuous growth”, “staged shock”, and “finished”; (2) Air temperature is the most significant meteorological factor influencing the transmission of the COVID-19 epidem...
Indian Journal of Animal Research
Accessing drop in milk production in cattle due to cold climate and subsequent nutrient amelioration in temperate KashmirThe American journal of physiology
Regulation of ET-1 biosynthesis in cerebral microvascular endothelial cells by vasoactive agents and PKC1999 •
Journal of Pediatric Surgery
Acute symptomatic hyponatremia and cerebral salt wasting after head injury: An important clinical entity2001 •
2012 •
Investigações em Ensino de Ciências
Percepções Sobre Limites e Possibilidades Para Adoção Da Interdisciplinaridade Na Formação De Professores De Ciências2019 •
Le Journal de Physique IV
Magnons dans les super-réseaux ferromagnétiques à 3 - couches1992 •
Journal of Global Health
Research priorities to reduce the impact of COVID-19 in low- and middle-income countries2022 •
2020 •
Journal of Neurology
The progression of non-motor symptoms in Parkinson’s disease and their contribution to motor disability and quality of life2012 •
2016 •
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture
Research Concerning the Agrochemical Optimization of the Fertilization System for Wheat Crops in the Transylvanian Plain2013 •
1980 •
CHI'E Jurnal Pendidikan Bahasa Jepang (Journal of Japanese Learning and Teaching)
Error Analysis of Kara and Node Usage in JLMC (Japanese Language Management Center) Students2021 •
Jurnal Pendidikan Khusus
Penerapan Media Gamifikasi Terhadap Kemampuan Membaca Permulaan Anak Autis Kelas Rendah DI Sekolah Luar Biasa2017 •
International Journal of Polymer Science
Graphene Oxide-PES-Based Mixed Matrix Membranes for Controllable Antibacterial Activity against Salmonella typhi and Water Treatment2018 •
Revista de Comunicación
Quiebras de la cronología y sentido: una aproximación narratológica a De la vida de las marionetas2019 •