scholarly journals Correction to: Implementation of a Respiratory Disease Forecasting Model Using LSTM for Central Taiwan

Author(s):  
Kieu Lan Phuong Nguyen ◽  
Ho-Wen Chen ◽  
Chao-Tung Yang ◽  
Endah Kristiani
Plant Disease ◽  
2020 ◽  
Author(s):  
Bruce Gossen ◽  
Cyril Selasi Tayviah ◽  
Mary Ruth McDonald

Stemphylium leaf blight (SLB), caused by Stemphylium vesicarium, is an important foliar disease of onion in northeastern North America. The pathogen produces conidia and ascospores, but the relative contributions of these spore types to epidemics in onion is not known. An effective disease forecasting model is needed to predict disease risk and to time fungicide applications. Determining the abundance of ascospores and conidia during the growing season couldwill contribute to a disease forecasting model. Air-borne ascospores and conidia of S. vesicarium were trapped during the growing season of 2015 and 2016 at an onion trial site in southern Ontario, Canada, using a Burkard 7-day volumetric sampler. Meteorological data wereas recorded hourly. Ascospore numbers peaked before the crop was planted and declined rapidly with time and at daily mean air temperatures > 15 °C. Conidia were present throughout the growing season and appear to be closely related to the development of SLB on onion. Daily spore concentrations were variable, but 59 to 73% of ascospores and ~60% of conidia were captured between 0600 to1200 h. Spore concentrations increased 24 to 72 h after rainfall and . Other variables associated with moisture, such as precipitation and leaf wetness duration, were consistently and positively associated with increases in numbers of conidia and subsequent SLB incidence . The first symptoms of SLB coincided with high numbers of conidia, rainfall, leaf wetness duration ≥ 8 h and days with average daily temp ≥ 18°C oC. The number of air-borne ascospores was very low by the time SLB symptoms were observed. Ascospores may initiate infection on alternative hosts in early spring, while conidia are the most important inoculum or the epidemic on onions.


2017 ◽  
Vol 50 (17-18) ◽  
pp. 885-899 ◽  
Author(s):  
Muhammad Ehetisham-ul-Haq ◽  
Abdul Rashid ◽  
Muhammad Kamran ◽  
Muhammad Idrees ◽  
Shaukat Ali ◽  
...  

2021 ◽  
Author(s):  
Dave Osthus

AbstractInfectious disease forecasting is an emerging field and has the potential to improve public health through anticipatory resource allocation, situational awareness, and mitigation planning. By way of exploring and operationalizing disease forecasting, the U.S. Centers for Disease Control and Prevention (CDC) has hosted FluSight since the 2013/14 flu season, an annual flu forecasting challenge. Since FluSight’s onset, forecasters have developed and improved forecasting models in an effort to provide more timely, reliable, and accurate information about the likely progression of the outbreak. While improving the predictive performance of these forecasting models is often the primary objective, it is also important for a forecasting model to run quickly, facilitating further model development, improvement, and scalability. In this vein I introduce Inferno, a fast and accurate flu forecasting model inspired by Dante, the top performing model in the 2018/19 FluSight challenge. When compared to all models that participated in FluSight 2018/19, Inferno would have placed 2nd in both the national and state challenges, behind only Dante. Inferno, however, runs in minutes and is trivially parallelizable, while Dante takes hours to run, representing a significant operational improvement with minimal impact to performance. A future consideration for forecasting competitions like FluSight will be how to encourage improvements to secondarily important properties of forecasting models, such as runtime, generalizability, and interpretability.


2000 ◽  
Vol 125 (6) ◽  
pp. 729-735 ◽  
Author(s):  
Ji Heun Hong ◽  
Douglas J. Mills ◽  
C. Benjamin Coffman ◽  
James D. Anderson ◽  
Mary J. Camp ◽  
...  

Experiments were conducted to compare changes in quality of slices of red tomato (Lycopersicon esculentum Mill. `Sunbeam') fruit from plants grown using black polyethylene or hairy vetch mulches under various foliar disease management systems including: no fungicide applications (NF), a disease forecasting model (Tom-Cast), and weekly fungicide applications (WF), during storage at 5 °C under a modified atmosphere. Slices were analyzed for firmness, soluble solids content (SSC), titratable acidity (TA), pH, electrolyte leakage, fungi, yeasts, and chilling injury. With both NF and Tom-Cast fungicide treatments, slices from tomatoes grown with hairy vetch (Vicia villosa Roth) mulch were firmer than those from tomatoes grown with black polyethylene mulch after 12 days storage. Ethylene production of slices from fruit grown using hairy vetch mulch under Tom-Cast was ≈1.5- and 5-fold higher than that of slices from WF and NF fungicide treatments after 12 days, respectively. The percentage of water-soaked areas (chilling injury) for slices from tomatoes grown using black polyethylene mulch under NF was over 7-fold that of slices from tomatoes grown using hairy vetch under Tom-Cast. When stored at 20 °C, slices from light-red tomatoes grown with black polyethylene or hairy vetch mulches both showed a rapid increase in electrolyte leakage beginning 6 hours after slicing. However, slices from tomatoes grown using the hairy vetch mulch tended to have lower electrolyte leakage than those grown with black polyethylene mulch. These results suggest that tomatoes from plants grown using hairy vetch mulch may be more suitable for fresh-cut slices than those grown using black polyethylene mulch. Also, use of the disease forecasting model Tom-Cast, which can result in lower fungicide application than is currently used commercially, resulted in high quality fruit for fresh-cut processing.


2009 ◽  
Vol 99 (7) ◽  
pp. 796-801 ◽  
Author(s):  
J. Khan ◽  
A. Qi ◽  
M. F. R. Khan

Cercospora leaf spot, caused by Cercospora beticola, is the most damaging foliar disease of sugar beet in Minnesota (MN) and North Dakota (ND). Research was conducted to characterize the temporal progression of aerial concentration of C. beticola conidia in association with the environment and disease severity in sugar beet. In 2003 and 2004, volumetric spore traps were placed within inoculated sugar beet plots to determine daily dispersal of conidia at Breckenridge, MN, and St. Thomas, ND. Plots were rated weekly for disease severity. At both locations, conidia were first collected in early July 2003 and late June in 2004. Peaks of conidia per cubic meter of air were observed with maxima in late August 2003 and in early September 2004 at both locations. Peaks of airborne conidium concentration were significantly correlated with the average temperature of daily hours when relative humidity was greater than 87%. Weekly mean hourly conidia per cubic meter of air was significantly (P < 0.01) associated with disease severity during both years and across locations. This study showed that C. beticola conidial numbers may be used to estimate potential disease severity that, with further research, could be incorporated in a disease forecasting model to rationalize Cercospora leaf spot management.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dave Osthus ◽  
Kelly R. Moran

AbstractInfluenza forecasting in the United States (US) is complex and challenging due to spatial and temporal variability, nested geographic scales of interest, and heterogeneous surveillance participation. Here we present Dante, a multiscale influenza forecasting model that learns rather than prescribes spatial, temporal, and surveillance data structure and generates coherent forecasts across state, regional, and national scales. We retrospectively compare Dante’s short-term and seasonal forecasts for previous flu seasons to the Dynamic Bayesian Model (DBM), a leading competitor. Dante outperformed DBM for nearly all spatial units, flu seasons, geographic scales, and forecasting targets. Dante’s sharper and more accurate forecasts also suggest greater public health utility. Dante placed 1st in the Centers for Disease Control and Prevention’s prospective 2018/19 FluSight challenge in both the national and regional competition and the state competition. The methodology underpinning Dante can be used in other seasonal disease forecasting contexts having nested geographic scales of interest.


2012 ◽  
Vol 46 (5) ◽  
pp. 4-5
Author(s):  
MIRIAM E. TUCKER
Keyword(s):  

2014 ◽  
Vol 71 (5) ◽  
pp. 267-274
Author(s):  
Judith A. Schneider Spence ◽  
Andreas J. Bircher ◽  
Kathrin Scherer Hofmeier

Während eine allergologische Abklärung im Work-Up eines Asthma bronchiale inbegriffen sein sollte, wird die chronisch obstruktive Pneumopathie nicht spontan mit einer atopischen Diathese in Zusammenhang gebracht. Anamnese, Klinik, das Vorhandensein weiterer atopischer Krankheiten sowie Prickteste und die serologische Messung von spezifischen IgE-Antikörpern geben Hinweise auf eine allergische Genese einer akuten oder chronischen Lungenkrankheit. Der Stickoxidwert in der Ausatemluft (FeNO-Messung) kann durch die Infiltration von Eosinophilen in die Bronchialwand beim allergischen Phänotyp des Asthma bronchiale erhöht sein (TH2-gewichteter Phänotyp). Eine Abhängigkeit der Beschwerden vom Arbeitsplatz muss evaluiert werden. Neben dem allergischen Typ des Asthma bronchiale soll auch an eine Aspirin-exacerbated-respiratory disease (AERD) gedacht werden. Aufgrund der überlappenden pathophysiologischen Grundlagen und der Symptomatik zwischen Asthma bronchiale und der chronisch obstruktiven Pneumopathie ist die Zuweisung zum Allergologen allenfalls auch bei einem COPD-Patienten indiziert.


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