scholarly journals Association between Hospital Visits for Superficial Fungal Infections and Climatological Factor

2020 ◽  
pp. 35-41
Author(s):  
Hyun-Min Seo ◽  
Se Kwang Park ◽  
Se Uk Oh ◽  
Ju Wang Jang ◽  
Joung Soo Kim
Keyword(s):  
Relative Humidity ◽  
Fungal Infection ◽  
Fungal Infections ◽  
National Sample ◽  
Effect Of Temperature ◽  
Tinea Unguium ◽  
Average Temperature ◽  
Hospital Visits ◽  
Epidemiological Characteristics ◽  
The Relationship

Background: No cohort studies exist on the effect of temperature and humidity on the number of visits to hospitals by patients with superficial fungal infections. Objective: The aim of our study was to investigate the relationship between climatological factors and superficial fungal infection-related hospital visits. Methods: This study was a retrospective cohort study based on the National Health Insurance Service-National Sample Cohort (NHIS-NSC) database of patients with superficial fungal infection, from 2003 to 2012. We analyzed epidemiological characteristics and types of superficial fungal infection using descriptive statistics. We extracted climatological variables including temperature, relative humidity, precipitation, wind speed, possible duration of sunshine, and duration of sunshine from the Korea Meteorological Administration. Results: 116,903 patients presented with superficial fungal infections in the NHIS-NSC database. The most common type of superficial fungal infection-related hospital visits was tinea unguium (46.72%), followed by tinea pedis (28.38%), tinea corporis (9.19%), and tinea cruris (7.52%). Significant positive linear associations were found between mean daily superficial fungal infection-related hospital visits and daily average temperature (p < 0.001) and relative humidity (p < 0.001). Conclusion: The data from this study indicated that high temperature and high relative humidity may exacerbate superficial fungal infections.

scholarly journals The Effect of Temperature and Humidity May Reduce the Growth Rate of the Coronavirus Disease 2019 Epidemic

2020 ◽  
Author(s):  
Lei Qin ◽  
Qiang Sun ◽  
Jiani Shao ◽  
Yang Chen ◽  
Xiaomei Zhang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Relative Humidity ◽  
Effect Of Temperature ◽  
Average Temperature ◽  
Temperature And Humidity ◽  
Scatter Plots ◽  
Low Humidity ◽  
Average Relative Humidity ◽  
Effects Of Temperature ◽  
The Relationship

Abstract Background: The effects of temperature and humidity on the epidemic growth of coronavirus disease 2019 (COVID-19)remains unclear.Methods: Daily scatter plots between the epidemic growth rate (GR) and average temperature (AT) or average relative humidity (ARH) were presented with curve fitting through the “loess” method. The heterogeneity across days and provinces were calculated to assess the necessity of using a longitudinal model. Fixed effect models with polynomial terms were developed to quantify the relationship between variations in the GR and AT or ARH.Results: An increased AT dramatically reduced the GR when the AT was lower than −5°C, the GR was moderately reduced when the AT ranged from −5°C to 15°C, and the GR increased when the AT exceeded 15°C. An increasedARH increased theGR when the ARH was lower than 72% and reduced theGR when the ARH exceeded 72%.Conclusions: High temperatures and low humidity may reduce the GR of the COVID-19 epidemic. The temperature and humidity curves were not linearly associated with the COVID-19 GR.

scholarly journals Effects of Climate on Incidence of Campylobacter spp. in Humans and Prevalence in Broiler Flocks in Denmark

2004 ◽  
Vol 70 (12) ◽  
pp. 7474-7480 ◽  
Author(s):  
Mary Evans Patrick ◽  
Lasse Engbo Christiansen ◽  
Michael Wainø ◽  
Steen Ethelberg ◽  
Henrik Madsen ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Linear Models ◽  
Public Health Problem ◽  
Effect Of Temperature ◽  
Maximum Temperature ◽  
Future Research ◽  
Combined Effects ◽  
Average Temperature ◽  
Effects Of Temperature ◽  
Single Predictor

ABSTRACT Campylobacter infections are increasing and pose a serious public health problem in Denmark. Infections in humans and broiler flocks show similar seasonality, suggesting that climate may play a role in infection. We examined the effects of temperature, precipitation, relative humidity, and hours of sunlight on Campylobacter incidence in humans and broiler flocks by using lag dependence functions, locally fitted linear models, and cross validation methods. For humans, the best model included average temperature and sunlight 4 weeks prior to infection; the maximum temperature lagged at 4 weeks was the best single predictor. For broilers, the average and maximum temperatures 3 weeks prior to slaughter gave the best estimate; the average temperature lagged at 3 weeks was the best single predictor. The combined effects of temperature and sunlight or the combined effects of temperature and relative humidity predicted the incidence in humans equally well. For broiler flock incidence these factors explained considerably less. Future research should focus on elements within the broiler environment that may be affected by climate, as well as the interaction of microclimatic factors on and around broiler farms. There is a need to quantify the contribution of broilers as a source of campylobacteriosis in humans and to further examine the effect of temperature on human incidence after this contribution is accounted for. Investigations should be conducted into food consumption and preparation practices and poultry sales that may vary by season.

scholarly journals Impact of climate and governments measures on COVID-19 spread : Evidence from data

2021 ◽  
Author(s):  
Kassimou Abdoul Haki Maoude ◽  
Chaffa Odjouwoni Lucien Chaffa ◽  
Idossou Marius Adom
Keyword(s):  
Wind Speed ◽  
Threshold Effect ◽  
Sir Model ◽  
Effect Of Temperature ◽  
Lower Growth ◽  
Average Temperature ◽  
Negative Effect ◽  
The One ◽  
The Relationship ◽  
Positive Effect

Abstract This paper investigates the effects of climate and governments responses on the spread of the COVID-19. Our strategy is empirical. Our model is based on an accounting equation derived from the SIR model, and estimates the relationship between the growth of the daily COVID-19 confirmed cases on the one hand, and climatic variables (such as the daily average temperature and the wind speed) and governments responses to COVID-19 on the other hand. We also develop a theoretical approach to test the presence of a threshold in the effect of the temperature on the COVID-19 spread. Using a panel data on a sample of 294 territories overs 106 days (from 22 January, 2020 to 06 May, 2020), we find significant negative effect of temperature and temperature variability and significant positive effect of wind speed and precipitation on the growth of the COVID-19 confirmed cases. We also find that governments responses are associated to a lower growth of confirmed cases. But we do not find any universally applicable threshold effect in the relationship between the average temperature and the confirmed cases growth.JEL Classification: C12, C15, C23, C60

scholarly journals A retrospective study: meteorological factors and COVID-19

2020 ◽  
Author(s):  
Cai Chen ◽  
Xiyuan Li ◽  
Xiangwei Meng ◽  
Zhixiang Ma ◽  
Wei Li ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Correlation Coefficient ◽  
Meteorological Factors ◽  
Rank Correlation ◽  
Effect Of Temperature ◽  
Maximal Effect ◽  
Global Epidemic ◽  
Average Temperature ◽  
Daily Average ◽  
Daily Average Temperature

Abstract Background: With the outbreak of novel coronavirus, the global epidemic prevention form is severe. Purpose: This paper aimed to investigate the association between meteorological factors (temperature, precipitation and relative humidity) and the daily new cases in Wuhan. Methods: generalized linear model was built to evaluate the link between daily average temperature and the new cases COVID-19. Spearman rank correlation coefficient was used to investigate the association between temperature, relative humidity, precipitation and the daily new cases COVID-19. Result: The correlation coefficient for daily average temperature, relative humidity, precipitation and NCP were 0.11, -0.083 and 0.17, respectively. The maximal effect of temperature on the new cases NCP appeared on Lag0. Conclusion: The variation of temperature had an effect on the daily new cases.

Study on Test Materials with the Relationship between Growth and Development Characteristics and Temperature and Relative Humidity of Jacaranda mimosifolia

2013 ◽  
Vol 743 ◽  
pp. 189-194
Author(s):  
Ying Sun ◽  
Fan Li ◽  
Jin An Shi
Keyword(s):  
Relative Humidity ◽  
Growth And Development ◽  
Test Material ◽  
Predominant Role ◽  
Average Temperature ◽  
Monthly Average ◽  
Basic Law ◽  
Significant Difference ◽  
The Relationship ◽  
Jacaranda Mimosifolia

Jacaranda mimosifolia of 55-year-old in Sichuan Neijiang was selected as test material. Through the observation of its growth and development by 2011 and the analysis of temperature and relative humidity, this study discussed its basic law of growth and development and the relationship between temperature and RH factor. By analysis of variance, there was no significant difference in monthly average temperature and RH between 2011 and the climate in Neijiang, the temperature and RH of 2011 could reflect the situation of Neijiang regional climatic. The results showed that the average annual growth of J. mimosifolia new shoot was 32.4cm and the average thickness was 11.2mm, and appeared thrice sprouting and twice flowering phenomenon per year. Combined the characteristics of growth and development of J. mimosifolia, the length and thickness of spring shoot, summer shoot and autumn shoot were both extremely different (P<0.01), and two florescence appeared in Spring and Autumn when the temperature was not different significantly. Therefore, temperature played an apparently predominant role in its growth and development.

scholarly journals Imaging Characteristics of Invasive Pulmonary Fungal Infection Secondary to Hematological Diseases and Comparison before and after Treatment

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Jun-Wei Wang ◽  
Fang-Fang Yang ◽  
Chuan-Yu Zhang ◽  
Ji-Zheng Lin ◽  
He-Xiang Wang ◽  
...  
Keyword(s):  
Fungal Infection ◽  
Fungal Infections ◽  
Negative Group ◽  
Blood Diseases ◽  
Positive Group ◽  
Hematological Diseases ◽  
Pulmonary Fungal Infections ◽  
Epidemiological Characteristics ◽  
Mass Type

Fungal infections have become crucial factors that threaten the prognosis and survival of blood disease patients. Here, we aim to analyze the epidemiological characteristics and early and advanced CT (computed tomography) manifestations of patients with invasive pulmonary fungal infections secondary to blood system diseases. 65 hospitalized patients from October 2018 to October 2020 with invasive pulmonary fungal infections secondary to blood diseases were enrolled. Blood diseases were recorded according to clinical and imaging data, and the serum galactomannan test (GM test) was conducted. Two senior radiologists analyzed the CT data and recorded the distribution of the lesions and CT signs. We analyzed and counted the first chest CT scan images of patients with nodule/mass type secondary to hematological diseases and invasive pulmonary fungal infection. The first CT nodules or mass-type lesions were statistically significant in nodule size, the number of lesions, distribution, and accompanying signs. Pulmonary fungal infection was common in both lungs during 7-day, 14-day, and 30-day follow-up CT. We also found that the nodular mass type was the main manifestation in the positive group of the GM test. Both the positive group and the negative group had the highest incidence of nodules. The incidence of air crescent signs in nodules or mass lesions in the positive group was higher than in the negative group, and the difference was statistically significant. To conclude, follow-up CT signs after antifungal treatment were highly sensitive to the early diagnosis of hematological diseases and secondary invasive pulmonary Eumycetes infection, which could be used for clinical treatment to provide help. GM test results were also related to CT manifestations such as air crescent sign, cavity, and halo sign.

scholarly journals Relationship Between Acanthosis Nigricans and Fungal Infection: Clinical and Histopathological findings

2021 ◽  
pp. 1-7
Author(s):  
Joon Woo Jung ◽  
Eun Hye Hong ◽  
Eun Joo Park ◽  
Kwang Joong Kim ◽  
Kwang Ho Kim
Keyword(s):  
Fungal Infection ◽  
Medical Records ◽  
Acanthosis Nigricans ◽  
Fungal Infections ◽  
Fungal Spores ◽  
Skin Condition ◽  
Skin Changes ◽  
Clinical Difference ◽  
Cutaneous Fungal Infection ◽  
The Relationship

Background: Acanthosis nigricans (AN) is a skin condition that presents clinically with hyperpigmented, hyperkeratotic, and velvety skin changes, especially in the intertriginous areas. The intertriginous areas are also susceptible to superficial cutaneous fungal infections. The potential relationship between AN and cutaneous fungal infection has not been investigated. Objective: The aim of this study was to determine the relationship, if any, between AN and fungal infection, both clinically and pathologically. Methods: A retrospective review was performed using electronic medical records and histology of biopsy slides obtained from 29 patients who were diagnosed with AN by two dermatopathologists. Comparison was made between the clinical and pathological findings of AN with fungal infection (ANFI+) and AN without fungal infection (ANFI-). Results: Among the 29 patients with AN, fungal spores were detected on the biopsy slides of 18 patients (62.1%) and appeared in the epidermal furrow more often than in the epidermal ridge. No significant clinical difference was found between the ANFI+ and ANFI- groups; however, in the ANFI+ group, lesions were more prevalent in the neck area (p = 0.048). In addition, the ANFI+ biopsy slides revealed more papillomatosis than ANFI- biopsy slides (p = 0.006). Conclusion: Fungal infection tends to appear in combination with AN when more severe papillomatosis is also present.

scholarly journals The Effect of Temperature Upon Transmission Of COVID-19 : Australia And Egypt Case Study

2020 ◽  
Author(s):  
Adly Anis
Keyword(s):  
Air Temperature ◽  
Effect Of Temperature ◽  
Average Temperature ◽  
Monthly Temperature ◽  
Virus Activity ◽  
The Relationship ◽  
Transmission Speed

Abstract Background: Several previous studies have recognized the effect of air temperature on the survival and transmission of viruses and germs. The current study investigated the effect of air temperature on the transmission of coronavirus covid-19 by monthly temperature averages maps analyzing.Methods: The study demonstrated the relationship between temperature and transmission speed of Covid-19 virus, It confirmed that the most appropriate average temperature for virus activity and transmission ranges between 13-24 ° C, by analyzing the maps of monthly temperature averages in Egypt and Australia.Results: The study reached, through cartographic analysis, to confirm the relationship between temperature and increase in the number of confirmed cases of covid-19, This study confirmed that the most appropriate average temperature for virus activity and transmission ranges between 13-24 ° C, by analyzing the maps of monthly temperature averages in Egypt and Australia.Conclusions: Results support that the most appropriate average temperature for the survival transmission of COVID-19 ranges between 13-24 ° C. Australia and Egypt are models to confirm the relationship between temperature and COVID-19 activity and spread.

scholarly journals The Effect of Temperature Upon Transmission Of COVID-19 Australia And Egypt Case Study.

2020 ◽  
Author(s):  
Adly Anis
Keyword(s):  
Air Temperature ◽  
Social Distance ◽  
Close Contact ◽  
Effect Of Temperature ◽  
Average Temperature ◽  
Monthly Temperature ◽  
Virus Activity ◽  
The Relationship ◽  
Transmission Speed

Abstract BackgroundSeveral previous studies have recognized the effect of air temperature on the survival and transmission of viruses and germs. The current study investigated the effect of air temperature on the transmission of coronavirus covid-19 by monthly temperature averages maps analyzing.MethodsThe study demonstrated the relationship between temperature and transmission speed of Covid-19 virus, It confirmed that the most appropriate average temperature for virus activity and transmission ranges between 13-24 ° C, by analyzing the maps of monthly temperature averages in Egypt and Australia.ResultsThe study reached, through cartographic analysis, to confirm the relationship between temperature and increase in the number of confirmed cases of covid-19, This study confirmed that the most appropriate average temperature for virus activity and transmission ranges between 13-24 ° C, by analyzing the maps of monthly temperature averages in Egypt and Australia. But the effect of the climate does not prevent the virus from being transmitted from one person to another through close contact or use of personal tools infected with the Corona virus, or crowding in air-conditioned places.Therefore, failure of individuals to follow the instructions for social distance and wearing a mask will lead to the transmission of the virus, even in hot climates.ConclusionsResults support that the most appropriate average temperature for the survival transmission of COVID-19 ranges between 13-24 ° C. Australia and Egypt are models to confirm the relationship between temperature and COVID-19 activity and spread.

scholarly journals A Retrospective Analysis of Influence of Environmental/Air Temperature and Relative Humidity on Sars-CoV-2 Outbreak

2020 ◽  
Vol 14 (3) ◽  
pp. 1705-1714
Author(s):  
Md. Arifur Rahman ◽  
Md. Golzar Hossain ◽  
Atul Chandra Singha ◽  
Md. Sayeedul Islam ◽  
Md Ariful Islam
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Negative Relationship ◽  
Rank Correlation ◽  
Effect Of Temperature ◽  
Upper Respiratory Tract ◽  
Viral Spread ◽  
Wide Range ◽  
The World ◽  
The Relationship

Coronaviruses are a family of viruses causing mild to severe upper respiratory tract syndrome. Recent pandemic threat caused by SARS-CoV-2 first appeared in Wuhan, China in December 2019. Whether the COVID-19 might be affected by warming global temperatures like some of previous pandemic flues. Therefore, the current study aims to analyze the effect of temperature and relative humidity (RH) on the spreading of the SARS-CoV-2 infection. The confirmed cases of COVID-19 in 31 different provinces in China and 274 provinces and/or countries were obtained from an online database. The real time temperature and humidity of the respective regions were taken from another online weather reporting data source. Spearman [R(s)] rank correlation was performed to identify the relationship between the variables (e.g., temperature, number of confirmed cases etc.). The overall spreading of SARS-CoV-2 in relations to temperature was inversely correlated. Among 29 of 31 provinces of China the overall correlation coeffient of the relationship between temperature and viral spread was negative [-R(s)] where in 15 provinces the correlation was at significant level (p<0.05). Furthermore, there was a significant negative relationship observed between the SARS-CoV-2 spreading and air temperature throughout the 274 provinces and/or countries of the world. However, there was no significant co-relationship between humidity and COVID-19 spreading either in China or among countries and/or various regions of the world. The SARS-CoV-2 infection seems to be spread in a wide range of temperature throughout the world. Thus, several factors including temperature, may influnce the SARS-CoV-2 spreading. As a results, relatively elevated air temperature could not completely prevent viral spread but it might be one of the important detrimental factors for SARS-CoV-2 rapid spread.

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