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Background: Approximately two years ago, COVID-19 was declared a global pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and through genomic surveillance, we have seen the emergence of variants of SARS-CoV-2. In the United States, over 78 million cases and >900,000 deaths attributable to COVID-19 have been reported. SCD was identified as a risk factor for severe COVID-19 disease in adults and pediatric patients. The emergence of novel SARs- CoV-2 variants has led to challenges in diagnosis, treatment, and prediction of long-term sequelae in individuals with SCD and COVID-19. Aim(s): We compare the overall seasonal variation of COVID-19 variants and patterns of healthcare utilization and clinical presentation over time in pediatric patients with SCD and COVID-19 at Children's National Hospital (CNH). Method(s): Our single-center, observational cohort study included 193 pediatric patients with SCD (0-21 years) with PCR-confirmed SARSCoV- 2 infection between March 31, 2020, and January 31, 2022. Per the SECURE SCD Registry definitions, clinical severity was classified as asymptomatic, mild, moderate, and severe. Result(s): A total of 193 unique patients with SCD and positive SARS-CoV-2 PCRs between March 2020-January 2022 were included in our registry. Most patients were female (51.8%), and the mean age was 11.2 years (SD 6.5 years). Most of the cohort resides in Maryland (N=135), and HbSS was the dominant genotype (69.4%). During the alpha dominant variant of the COVID-19 pandemic (March 2020- June 2021) there were 70 cases, followed by 40 cases during the Delta variant (July 2021- December 19, 2021), and 83 cases during the Omicron variant dominance (from December 20, 2021-January 31,2022). There were 149 patients (77%) that presented to the emergency department (ED) or were hospitalized. There were a total of 80 hospitalizations (41.5%), and a relative comparison showed that the percentage of hospitalizations was highest during the delta wave (47.5%) and lowest during the omicron wave (36.1%) (p= 0.407). ED-only utilization was highest in the era of omicron (43.4%, N=36), followed by delta (32.5%, N=13), and then alpha (30%, N=21)(p=0.197). The most common SCD-related complication was vaso-occlusive (VOC) pain (33%, N=64) which accounted for half of all hospital admissions (51%, N=41 of 80). Acute chest syndrome (ACS) was reported in 40% (N=32) of admitted patients and was highest in the alpha era (54.8%, N=17). The use of blood transfusion therapy was highest in the alpha (N=17) and delta (N=14) variants, while Remdesivir use was highest in omicron (N=15). A total of 6 patients received monoclonal antibodies (Delta, N=4;omicron, N=2). Throughout all the variants, there was a significant difference in COVID-19 clinical severity (p>0.005). Of the patients classified as asymptomatic (13%, N=25), seventy-two percent (n=18) were diagnosed during the alpha variant. Mild severity was the most prevalent (69%, N=134), with the omicron variant having the highest cases (51.5%, N=69). Severe cases were observed in all variants (6.7%, N=13) but were most prevalent during the alpha variant (46.2%, N=6). Summary - Conclusion(s): Interestingly, while the relative percentage of hospitalizations was lowest during the omicron wave, it saw the highest percentages of ER utilization. Overall, COVID-19 remains mild in pediatric patients with SCD, and notably, there was higher health care utilization in the omicron era.
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The additional impact of emission-reduction measures in North China (NC) during autumn and winter on the air quality of downwind regions is an interesting but less addressed topic. The mass concentrations of routine air pollutants, the chemical compositions, and sources of fine particles (PM2.5) for January 2018, 2019, and 2020 at a megacity of Central China were identified, and meteorology-isolated by a machine-learning technique. Their variations were classified according to air mass direction. An unexpectedly sharp increase in emission-related PM2.5 by 22.7% (18.0 mug m-3) and 25.7% (19.4 mug m-3) for air masses from local and NC in 2019 was observed compared to those of 2018. Organic materials exhibited the highest increase in PM2.5 compositions by 6.90 mug m-3 and 6.23 mug m-3 for the air masses from local and NC. PM2.5 source contributions related to emission showed an upsurge from 1.39 mug m-3 (biomass burning) to 24.9 mug m-3 (secondary inorganic aerosol) in 2019 except for industrial processes, while all reduced in 2020. From 2018 to 2020, the emission-related contribution of coal combustion to PM2.5 increased from 10.0% to 19.0% for air masses from the local area. To support the priority natural gas quotas in northern China, additional coal in cities of southern China was consumed, raising related emissions from transportation activities and road dust in urban regions, as well as additional biofuel consumption in suburban or rural regions. All these activities could explain the increased primary PM2.5 and related precursor NO2. This study gave substantial evidence of air pollution control measures impacting the downwind regions and promote the necessity of air pollution joint control across the administration.Copyright © 2023 Elsevier Ltd
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One of the leading causes of the increase in the intensity of dengue fever transmission is thought to be climate change. Examining panel data from January 2000 to December 2021, this study discovered the nonlinear relationship between climate variables and dengue fever cases in Bangladesh. To determine this relationship, in this study, the monthly total rainfall in different years has been divided into two thresholds: (90 to 360 mm) and (<90 or >360 mm), and the daily average temperature in different months of the different years has been divided into four thresholds: (16degreeC to <=20degreeC), (>20degreeC to <=25degreeC), (>25degreeC to <=28degreeC), and (>28degreeC to <=30degreeC). Then, quasi-Poisson and zero-inflated Poisson regression models were applied to assess the relationship. This study found a positive correlation between temperature and dengue incidence and furthermore discovered that, among those four average temperature thresholds, the total number of dengue cases is maximum if the average temperature falls into the threshold (>28degreeC to <=30degreeC) and minimum if the average temperature falls into the threshold (16degreeC to <=20degreeC). This study also discovered that between the two thresholds of monthly total rainfall, the risk of a dengue fever outbreak is approximately two times higher when the monthly total rainfall falls into the thresholds (90 mm to 360 mm) compared to the other threshold. This study concluded that dengue fever incidence rates would be significantly more affected by climate change in regions with warmer temperatures. The number of dengue cases rises rapidly when the temperature rises in the context of moderate to low rainfall. This study highlights the significance of establishing potential temperature and rainfall thresholds for using risk prediction and public health programs to prevent and control dengue fever.Copyright © 2023 Shamima Hossain.
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Background: The new novel Coronavirus 2019 (nCOV-19 or COVID-19) has caused an unprecedented pandemic in humans. All nations have heightened their surveillances after the quick diagnosis of potential cases of the COVID-19. Objective(s): Recent statistics have mentioned that virus outbreak in tropical countries is relatively low compared to cold nations. To support this conclusion, we considered the six main tropical regions to investigate the pandemic distribution at the initial phase. Method(s): Chi-square test was applied to understand the correlation between outbreak and temperature changes. Significant probability P-value was set to P<0.01. P-values were calculated to both positive and death cases. Result(s): Out of 1211562 infected cases, 41776 cases (3.45%) were registered at hightemperature countries (P<0.0001) and 1161786 cases (96.55%) at other countries like European countries or the USA. Moreover, only 1433 mortality cases (2.2%) happened, and the remaining 97.8% of mortality happened among other nations. Conclusion(s): Similar to other respiratory viruses like flu and influenza, there is a low outbreak of COVID-19 in tropical nations compared to the other countries. Apart from weather conditions, it is also recommended to follow the serious preventive measures imposed by governments to survive this novel epidemic.Copyright © 2020
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Background:Antenatal care (ANC) is a form of preventive medicine, pregnancy-specific, and general health advice effectively given in the antenatal period. ANC is conducted by healthcare personnel on pregnant women at regular intervals to protect and improve maternal and neonatal health. Objectives: The study aimed to know if the COVID-19 pandemic affects the coverage rate of ANC visits of pregnant women. Materials and methods: This is a retrospective cross-sectional study conducted at Al-Andalus Primary Healthcare Center which is located in the center of Al-Ramadi city, Iraq. We reviewed the records of all ANC first, second, and total visits of the months February, May, and October during the years 2019, 2020, and 2021. Results: The study showed the coverage rate of ANC visits was statistically significantly declined with the restrictions imposed in response to the COVID-19 pandemic. At the end of 2021, there are some elevation in the coverage rate of ANC visits.. Conclusion: The study concluded that the lockdown period in the pandemic state due to COVID-19 led to a significant decline in the coverage rate of ANC visits. © 2022, Al-Anbar Medical Journal.
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The study was aimed to investigate the seasonal variation of hemoglobin A1c (HbA1c) in adults with type 1 diabetes (T1D) and the impact of coronavirus disease 2019 (COVID-19) by comparing 2019 and 2021 data and differences in treatment modes. This was a single-center retrospective observational study including 52 adult patients with T1D who regularly visited hospital in 2019 and 2021. Twenty-five patients used multiple daily injections (MDI)/self-measurement of blood glucose (SMBG), 16 used MDI/intermittently scanned continuous glucose monitoring (isCGM), 9 used sensor-augmented pump (SAP), and 2 used continuous subcutaneous insulin infusion (CSII)/isCGM. The mean HbA1c level was calculated for each month. The correlation between monthly means of temperature and HbA1c was investigated. Similar analyses were performed for the MDI/SMBG, MDI/isCGM, and SAP + CSII/isCGM groups. HbA1c levels in 2019 decreased in summer and increased in winter and showed a significant negative correlation with temperature (r = -0.652, p = 0.022). However, HbA1c in 2021 showed no seasonal variation and no correlation with temperature (r = -0.134, p = 0.678) and tended to decline after the three emergency declarations. HbA1c in the MDI/SMBG group showed the same trend as the whole group in 2019 and 2021. However, the effect of seasonal variation in HbA1c was lower in the MDI/isCGM group and the lowest in the SAP + CSII/isCGM group in 2019. The impact of emergency declaration on HbA1c level was small for the MDI/isCGM group and smaller for the SAP + CSII/isCGM group in 2021. The COVID-19 pandemic has affected the seasonal variation of HbA1c levels in T1D; the variation differed according to the treatment mode.
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The sediments underneath Mexico City have unique mechanical properties that give rise to strong site effects. We investigated temporal changes in the seismic velocity at strong-motion and broadband seismic stations throughout Mexico City, including sites with different geologic characteristics ranging from city center locations situated on lacustrine clay to hillside locations on volcanic bedrock. We used autocorrelations of urban seismic noise, enhanced by waveform clustering, to extract subtle seismic velocity changes by coda wave interferometry. We observed and modeled seasonal, co- and post-seismic changes, as well as a long-term linear trend in seismic velocity. Seasonal variations can be explained by self-consistent models of thermoelastic and poroelastic changes in the subsurface shear wave velocity. Overall, sites on lacustrine clay-rich sediments appear to be more sensitive to seasonal surface temperature changes, whereas sites on alluvial and volcaniclastic sediments and on bedrock are sensitive to precipitation. The 2017 Mw 7.1 Puebla and 2020 Mw 7.4 Oaxaca earthquakes both caused a clear drop in seismic velocity, followed by a time-logarithmic recovery that may still be ongoing for the 2017 event at several sites or that may remain incomplete. The slope of the linear trend in seismic velocity is correlated with the downward vertical displacement of the ground measured by interferometric synthetic aperture radar, suggesting a causative relationship and supporting earlier studies on changes in the resonance frequency of sites in the Mexico City basin due to groundwater extraction. Our findings show how sensitively shallow seismic velocity and, in consequence, site effects react to environmental, tectonic and anthropogenic processes. They also demonstrate that urban strong-motion stations provide useful data for coda wave monitoring given sufficiently high-amplitude urban seismic noise.
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COVID-19 belongs to the group of acute respiratory infections and it is often complicated with pneumonia. This study aimed to investigate manifestations of community-acquired pneumonia (CAP) epidemic process during the COVID-19 epidemic in the Russian Federation. We analyzed the official statistical data reporting the incidence of CAP in the Russian Federation in 2013-2020 and incidence of COVID-19 as registered in March-July 2020. The mean average annual CAP incidence rate that we calculated and the 2020 CAP incidence prediction allowed assessing the relationship between CAP and COVID-19. It is shown that the long-term dynamics of the incidence of CAP in the Russian Federation is characterized by a pronounced upward trend with an average annual growth rate of 6.4%. The share of adult population among the CAP cases is the largest;on average, it is 64.7% (95% CI [63.1;66.3]). In 2020, against the background of SARS-CoV-2 circulation, the discrepancy between the actual incidence of CAP and the predicted figures reached and exceeded 558% (in July 2020). As the COVID-19 epidemic developed, the incidence of CAP was registered to increase. There was established a direct and significant correlation between the incidence of CAP and COVID-19 (rxy = 0.932;p <0.01).Copyright © 2022 Obstetrics, Gynecology and Reproduction. All rights reserved.
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Enteroviruses, beyond poliovirus, are important pathogens. Several non-polio enteroviruses (NPEVs) are causing epidemics all around the world. Limited data is available on the prevalence and diversity of these viruses from India. Objective(s): Detection and characterization of NPEVs in respiratory samples during the COVID-19 pandemic period. Material(s) and Method(s): COVID-19 negative samples from acute respiratory infections (ARI) [n = 105] and severe-acute respiratory infections (SARI) [n = 148] during the period 2021-22 were screened for NPEVs. Detection was carried out using the one step RT-PCR method targeting the 5'UTR region followed by molecular analysis. Results and Conclusion(s): Total positivity of NPEVs was noted in 35.23% and 31.08% of the ARI and SARI cases, respectively. Comparison within the two groups studied, showed significant difference in the age-wise distribution for cases>18 years of age. Year round seasonality for ARI cases while autumn seasonality for SARI cases was observed. Sequencing of representative samples of ARI cases showed prevalence of Rhinovirus A (RVA), Rhinovirus B (RVB), Rhinovirus C (RVC) and Echovirus, while predominance of RVC followed by RVA was observed for the SARI cases. Phylogenetic analysis of all the strains showed clustering of RVC strains in different clusters. Divergence was also noted in RVA and RVB strains studied. Circulation of a rare Echovirus-29 strain was noted in the ARI cases. The study highlighted significant divergence in the Rhinovirus strains studied. It warrants the need for surveillance of NPEVs, whole-genome sequencing of the circulating strains for better understanding of biodiversity among the NPEVs and the potential health burden.
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INTRODUCTION AND OBJECTIVE: Nutrition therapy for stone prevention is indicated if risks are diet-related. Dietary recommendations (DRs) include higher fluid intake, lower salt intake, lower dietary acid load, and normal calcium (neither excessive nor insufficient). Adherence is challenging to assess and optimally includes multiple measures including patient-reported outcomes. We assessed adherence to individualized targeted DRs issued in our multidisciplinary stone prevention clinic. METHOD(S): From 1/2020-1/2021 we invited patients to complete a questionnaire 1 month after their appointment. They were to estimate the number of days within the last week they followed specific DRs prescribed them and number of days they followed all DRs. Questionnaires were sent by mail with postage-paid return envelopes. This was a quality improvement project;patients were offered to respond anonymously. RESULT(S): Respondents (n=132) represented 29% of patients who were sent questionnaires and were 50% female (61+/-13 y). Of those providing clinical details, 77% were recurrent stone formers;46% were on stone medication(s). There were no adherence differences for men vs. women, recurrent vs. one-time stone formers, nor for those on stone-related medications vs. not. Overall, adherence to eating more F/ V was lower (4.7 vs. 5.5 d/week for all other DRs, p<0.004). We separated responses by receipt: summer/fall (April to mid-November) and winter/spring (mid-November to April), and by pre- vs. post- COVID (before/after March 2020). F/V intake was significantly lower during winter/spring than summer/fall (4.4 vs. 5.5 d/week, p=0.009). Related to the COVID pandemic, patients reported lower adherence to all DRs after the pandemic start (5.0 vs. 5.9 d/week, P=0.009 for difference from before). CONCLUSION(S): Overall, adherence to eating more F/V was significantly lower than for other DRs and was lower yet during winter/ spring. The COVID pandemic did not affect F/V intake specifically but did reduce adherence to all DRs. F/V are important in stone prevention because they provide HCO3 precursors that increase urine citrate and pH. F/V also provide other stone inhibitors, including phytate (which in urine inhibits calcium stone formation) and prebiotics, some of which enhance oxalate-degrading gut bacteria. Moreover, F/V intake can account for up to 30% of urine output and thus may help meet fluid recommendations. Barriers to F/V intake, which may include seasonal variations in cost and availability, should be addressed .
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Background: Evidence suggests association between long-term exposure to air pollutants and increased risk of becoming infected with SARS-CoV- 2, the causative agent of COVID-19, and increased severity of COVID-19. However, it remains unclear whether breathing more polluted air over many years affects susceptibility to infection or only affects disease severity, with uncertainty around the intensity of these associations. It has been estimated that anthropogenic emissions have contributed to over 10% of the over 660 million cases of SARS-CoV-2 and the over 7.5 million COVID-19 deaths reported worldwide over the course of the pandemic. Furthermore, as the world continues to warm and if air pollution levels increase, then so might the burden of respiratory infectious disease, including COVID-19. Method(s): Here we explore the potential impact of long-term exposure to increasing levels of particulate matter 2.5 microns or less in diameter (PM2.5) (+1 to +5 mug/m3) assuming an association on either (1) SARS-CoV-2 susceptibility or (2) COVID-19 disease severity by projecting SARS-CoV-2 infections and COVID-19-related hospital admissions over a two-year period. Simulations were conducted using a SARS-CoV-2 transmission model in a global setting capturing age and comorbidity risk, considering seasonality, emerging variants, and vaccination and treatment options. We model linear, log, and log10 relationships between these associations. Result(s): We show that if long-term exposure to higher levels of air pollution only affects COVID-19 severity, then as expected, the projected number of COVID-19-related hospitalisations would proportionally increase. However, if exposure directly affects the susceptibility of becoming infected, then while infections would be higher, hospitalizations would also be even higher due to the potential for onward transmission. This aligns with associations between air pollution and other respiratory infections and their associated health outcomes. Conclusion(s): The anticipated additional impact air pollution is having on the public health burden of respiratory infectious disease, like COVID-19, should be considered in strategic action plans to mitigate and adapt to changing levels of air pollution. It is important to better understand at which point air pollution affects SARS-CoV-2 infection acquisition through to disease progression, to enable improved protection and to better support those most vulnerable. Modelled impact of air pollution on COVID-19. The projected cumulative impact of long-term exposure to incrementally higher PM2.5 levels (+1 to +5 mug/m3) affecting either SARS-CoV-2 susceptibility or COVID-19 disease severity on cumulative SARS-CoV-2 infections and COVID-19-related hospital admissions over a two-year period in a global setting of 100,000 people. Age and comorbidity risk are captured, seasonality considered, and it is assumed SARS-CoV-2 variants of concern (with 10% more infectious and 20% more immune-evading than the previous variant, and Omicron-level severity) emerge every six months, and COVID-19 vaccination and treatment (monoclonalantibody PrEP and antivirals) are implemented for all those eligible. While the associations between PM2.5 exposure and either SARS-CoV-2 susceptibility or COVID-19 disease severity remains unclear and there is much uncertainty around estimated assumptions, here we show a modelled log10 relationship between these two potential associations. COVID-19: coronavirus disease 2019. PM2.5: particulate matter 2.5 microns or less in diameter. PrEP: pre-exposure prophylaxis. SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.
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Background: In many countries, non-pharmaceutical interventions to limit severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission resulted in significant reductions in other respiratory viruses. However, similar data from Africa are limited. We explored the extent to which viruses such as influenza and rhinovirus co-circulated with SARS-CoV-2 in The Gambia during the COVID-19 pandemic. Methods: Between April 2020 and March 2022, respiratory viruses were detected using RT-PCR in nasopharyngeal swabs from 1397 participants with influenza-like illness. An assay to detect SARS-CoV-2 and a viral multiplex RT-PCR assay was used as previously described to detect influenza A and B, respiratory syncytial virus (RSV) A and B, parainfluenza viruses 1-4, human metapneumovirus (HMPV), adenovirus, seasonal coronaviruses (229E, OC43, NL63) and human rhinovirus. Result(s): Overall virus positivity was 44.2%, with prevalence higher in children <5 years (80%) compared to children aged 5-17 years (53.1%), adults aged 18-50 (39.5%) and >50 years (39.9%), p<0.0001. After SARS-CoV-2 (18.3%), rhinoviruses (10.5%) and influenza viruses (5.5%) were the most prevalent. SARS-CoV-2 positivity was lower in children <5 (4.3%) and 5-17 years (12.7%) than in adults aged 18-50 (19.3%) and >50 years (24.3%), p<0.0001. In contrast, rhinoviruses were most prevalent in children <5 years (28.7%), followed by children aged 5-17 (15.8%), adults aged 18-50 (8.3%) and >50 years (6.3%), p<0.0001. Four SARS-CoV-2 waves occurred, with 36.1%-52.4% SARS-CoV-2 positivity during peak months. Influenza infections were observed in both 2020 and 2021 during the rainy season as expected (peak positivity 16.4%-23.5%). Peaks of rhinovirus were asynchronous to the months when SARS-CoV-2 and influenza peaked. Conclusion(s): Our data show that many respiratory viruses continued to circulate during the COVID-19 pandemic in The Gambia, including human rhinoviruses, despite the presence of NPIs during the early stages of the pandemic, and influenza peaks during expected months.Copyright: © 2023 Jarju S et al.
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INTRODUCTION AND OBJECTIVE: Low value health care is defined as care in which the potential to cause harm is greater than benefit. We hypothesize that rationing of health care services during the pandemic decreased the delivery of low value services. METHOD(S): Data was retrieved from the Mass General Brigham Research Patient Data Registry. High value care services were defined by U.S. Preventive Services Task Force guidelines, while low value care services were adapted for claims as described in the literature. Twenty-one services (4 high value and 17 low value) had adequate volume for analysis. Three month periods were considered, consisting of the pandemic period (Q4: 3/2/20 to 6/1/20) and control periods preceding the pandemic (Q1: 12/1/18 to 3/1/19;Q2: 3/2/19 to 6/1/19;and Q3: 12/1/19 to 3/1/20). Ratio measures of services per period were used to account for seasonality and differences in frequency.The 2019 high value (H) care ratio (Y0H = NHQ2/NHQ1) illustrates relative service counts during a typical year and the 2020 ratio (Y1H = NHQ4/NHQ3) represents the change due to the pandemic. Difference in ratios YH=Y1H-Y0H less than zero reflects a reduction in high value services during the pandemic. The same calculation was made for low value (L) procedures;YL=Y1LY0L. The difference between YL and YH is the difference in differences (DID) estimator and illustrates the differential decline in services. YH- YL greater than zero suggests that low value care declined to a greater degree than high value care. Subdivision DID in ratio analyses were performed for cancer and non-cancer care. RESULT(S): Included in this analysis were 3,271,957 patients. Mean age was 51.4 years, 59.1% of patients were female, and 71.7% were non-Hispanic. Of 21 identified services, 18 had a reduction in volume during the pandemic. The YL for PSA testing in men older than 75 was -0.81. The DID in ratios of all care was 0.08 (p<0.01), suggesting a modest decline in low-value care (Figure 1). The reduction was more pronounced for cancer care with a DID in ratios of 3.39 (p<0.01). CONCLUSION(S): We observed a reduction in both low and high value care with a greater reduction in low value services, especially for cancer care. Limitations include use of data from a single health system, limited number of services, and short time periods given the rapid onset of the pandemic.
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Background: Rabies which is 100 fetal but preventable is caused by bite of rabid animals particularly dogs. Animal bites cases are major public health problem in India and also in the UT of Jammu & Kashmir. Objective(s): To study the trend and seasonal Variation of animal bite cases attending the Anti Rabies clinic (from 2009 to 2022), run by Department of Community Medicine, Government Medical College Srinagar at SMHS Hospital. Material(s) and Method(s): The retrospective Cross sectional study conducted at Anti-Rabies Clinic of SMHS Hospital, a tertiary care associated Hospital of Government Medical College Srinagar. Data was collected from the record of Animal bite register at Anti rabies clinic after proper permission from the incharge of the clinic. Data was entered and analyzed on Excel soft ware. Result(s): More than 70,000 number of animal bites cases were reported at the Anti-Rabies clinic from the year 2009 to 2022. there has been a rise of cases from the year 2009 to 2018 with a slight decrease in the year 2019-20. About 97% of all animal bites were dog bites. Majority of the cases (>60%) were category of three (3) exposure. One year analysis for seasonal variation shows that incidence was more in March and May-June. Conclusion(s): the present study showed that animal bites cases were rising with little decrease in the year 2019-20 as may be due to lesser animal human interaction due to Covid-19 restrictions. Keeping in view the present trend it is expected that the Animal bite cases will show rising trend in coming years. Multidisciplinary approach is advocated to control the increasing trend.
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We aim to explore the seasonal influences of meteorological factors on COVID-19 era over two distinct locations in Bangladesh using a generalized linear model (GLM) and wavelet analysis. GLM model findings show that summer humidity drives COVID-19 transmission to coastal and inland locations. During the summer in the coastal area, a 1 °C earth's skin temperature increase causes a 41.9% increase in COVID (95% CL 86.32%-2.54%) transmission compared to inland. Relative humidity was recorded as the highest at 73.97% (95% CL, 99.3%, and 48.63%) for the coastal region, while wind speed and precipitation reduced confirmed cases by -38.62% and -22.15%, respectively. Wavelet analysis showed that coastal meteorological parameters were more coherent with COVID-19 than inland ones. The outcomes of this study are consistent with subtropical climate regions. Seasonality and climatic similarity should address to estimate COVID-19 trends. High societal concern and strong public health measures may decrease meteorological effect on COVID-19. [ FROM AUTHOR] Copyright of Geocarto International is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)
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To analyze the population density, seasonal fluctuation of Aedes albopictus in Haizhu District, Guangzhou from 2017 to 2021, so as to provide a scientific basis for the monitoring and prevention and control of mosquito vector density of dengue fever. The data of dengue fever cases and Aedes surveillance data in Haizhu District, Guangzhou from 2017 to 2021 were collected, and the data of 2017-2019 and 2020-2021 were grouped to compare and analyze the characteristics of dengue epidemic and the density fluctuation of Aedes mosquitoes. A total of 517 dengue cases were reported in Haizhu District, Guangzhou from 2017 to 2021, of which only 7 cases were reported from 2020 to 2021, and the peak period of reported cases every year was August to November. Before the COVID-19 pandemic, there was a positive correlation between the number of local cases and the number of imported cases(rs=0.63, P<0.05) and BI(rs=0.73, P<0.05). The peak density of Aedes was from May to October, and the differences of mean BI(X~2=1 143.40,P<0.001), MOI(X~2=188.30,P<0.001), and SSI(X~2=4 499.43,P<0.001)before and after the COVID-19 pandemic were statistically significant. In general, before and after the COVID-19 pandemic, the density of Aedes in high-risk areas was higher than that in low-risk areas. After COVID-19 pandemic, the number of reported cases and the density of Aedes in Haizhu District decreased, but the density of Aedes in the high-risk area was still higher than that in low-risk areas, and a certain risk of outbreak still existed, so the government should continue to take more precise measures to strictly prevent dengue epidemic.
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Acid deposition and particulate matter (PM) pollution have declined considerably in China. Although metal(loid) and acid deposition and PM have many common sources, the changes of metal(loid) deposition in China in the recent decade have not been well explored by using long-term monitoring. Therefore, we analyzed the dry and wet deposition of eleven metal(loid)s (including Al, As, Ba, Cd, Cu, Cr, Fe, Mn, Pb, Sr, and Zn) from 2017 to 2021 at Mount Emei, which is adjacent to the most economic-developed region in western China (Sichuan Basin (SCB)). Anthropogenic emissions contributed to over 80% of the annual wet deposition fluxes of metal(loid)s and acids (SO4 2-, NO3 -, and NH4 +) at Mount Emei, and the major source regions were the SCB, the Yunnan-Guizhou Plateau, and Gansu Province. Metal(loid) and acid deposition had similar seasonal variations with higher wet deposition fluxes in summer but higher wet deposition concentrations and dry fluxes in winter. The seasonal variations were partially associated with higher precipitation but lower pH in summer (968 mm and 5.52, respectively) than in winter (47 mm and 4.73, respectively). From 2017 to 2021, metal(loid) deposition did not decline as substantially as acid deposition (5.6%-30.4%). Both the annual total deposition fluxes and concentrations of Cr, Cu, Sr, Ba, and Pb were even higher in 2020-2021 than in 2017-2018. The inter-annual and seasonal changes implied the responses of metal(loid) deposition to anthropogenic emission changes were buffered (e.g., transformation, dilution, and degradation) by precipitation rates, acidity, natural emissions, and chemical reactions in the atmosphere, among others.Copyright © 2023 Elsevier Ltd
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Background: In the northern hemisphere, Respiratory Syncytial Virus (RSV) is more frequently detected from December to February. In Italy, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) presented a peak in incidence from the end of December 2021 to February 2022. Aim(s): To evaluate how SARS-CoV-2 pandemic has influenced RSV circulation. Method(s): We evaluated 389 children, aged 0-18 years, admitted for respiratory tract infections from September 2021 to January 2022 throughout Italy, from the north to the south. Children underwent nasal washing from 1 to 3 days after hospitalization. A (RT)-PCR was developed for detecting 15 respiratory viruses, including RSV, influenza virus A and B, human coronavirus OC43, 229E, NL-63 and HUK1, adenovirus, rhinovirus, parainfluenza virus 1-3, human bocavirus and human metapneumovirus. Result(s): We detected a virus in 338 children (86.9%): RSV was found in 267 (68.7%), other viruses in 71 (18.3%). 51 children (13.1%) resulted negative. Dividing our observational period in two-week timeframes, we found that RSV showed an early peak from October to the first half of December 2021 compared to its usual seasonality. In a previous study, we have demonstrated that RSV circulation was incredibly low from September 2020 to January 2021, in contrast with what we found in the same period in 2021-2022. Comparing RSV and SARS-CoV-2 incidences, we found that these two viruses spread in opposite ways: when SARS-CoV-2 present an incidence peak, RSV circulation reduced and viceversa. Conclusion(s): The relationship between RSV and SARS-CoV-2 showed that viral interference plays a crucial role in their epidemiology.