Institutions
|
About Us
|
Help
|
Gaeilge
0
1000
Home
Browse
Advanced Search
Search History
Marked List
Statistics
A
A
A
Author(s)
Institution
Publication types
Funder
Year
Limited By:
Author = McAloon, Conor G.;
11 items found
Sort by
Title
Author
Item type
Date
Institution
Peer review status
Language
Order
Ascending
Descending
25
50
100
per page
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Displaying Results 1 - 11 of 11 on page 1 of 1
Marked
Mark
COVID-19 epidemiological parameters summary document
(2020)
More, Simon John; McAloon, Conor G.; Griffin, John M.; Casey, Miriam; Barber, Ann; Lane...
COVID-19 epidemiological parameters summary document
(2020)
More, Simon John; McAloon, Conor G.; Griffin, John M.; Casey, Miriam; Barber, Ann; Lane, Elizabeth; Byrne, Andrew W.; Collins, Áine B.; McEvoy, David; Hunt, Kevin; Butler, Francis; Wall, Patrick G.
Abstract:
In response to the coronavirus (COVID-19) outbreak, the Irish Epidemiological Modelling Advisory Group (IEMAG) for COVID-19 was established to assist the Irish National Public Health Emergency Team (NPHET) in their decision-making during the pandemic. A subcommittee from IEMAG (the epidemiological parameters team) was tasked with researching the various parameters, leading to the development of a series of synthesis documents relevant to the parameterisation of a COVID-19 transmission model for Ireland. These parameters include: • R0/R • Latent period & relative importance of pre-symptomatic period • Incubation period • Generation time & serial interval • Proportion of infected who are asymptomatic, by age • Length of infectious period in asymptomatic people and in symptomatic people who do not isolate • Time from onset of symptoms to diagnosis/test results and to hospitalisation • Length of hospital stay and admission to ICUs • Relative infectiousness of asymptomatic versus...
http://hdl.handle.net/10197/11639
Marked
Mark
Evaluation of national surveillance methods for detection of Irish dairy herds infected with Mycobacterium avium ssp. paratuberculosis
(2019)
Sergeant, E.S.G.; McAloon, Conor G.; Tratalos, Jamie A.; More, Simon John; et al.
Evaluation of national surveillance methods for detection of Irish dairy herds infected with Mycobacterium avium ssp. paratuberculosis
(2019)
Sergeant, E.S.G.; McAloon, Conor G.; Tratalos, Jamie A.; More, Simon John; et al.
Abstract:
The aim of this study was to evaluate the utility and cost-effectiveness of a range of national surveillance methods for paratuberculosis in Irish dairy herds. We simulated alternative surveillance strategies applied to dairy cattle herds for the detection of Mycobacterium avium ssp. paratuberculosis (MAP)-infected herds (case-detection) or for estimation of confidence of herd freedom from infection (assurance testing). Strategies simulated included whole-herd milk or serum serology, serology on cull cows at slaughter, bulk milk tank serology, environmental testing, and pooled fecal testing. None of the strategies evaluated were ideal for widespread national case-detection surveillance. Herd testing with milk or serum ELISA or pooled fecal testing were the most effective methods currently available for detection of MAP-infected herds, with median herd sensitivity >60% and 100% herd specificity, although they are relatively expensive for widespread use. Environmental sampling show...
http://hdl.handle.net/10197/10579
Marked
Mark
Incubation period of COVID-19: a rapid systematic review and meta-analysis of observational research
(2020)
McAloon, Conor G.; Collins, Áine B.; Hunt, Kevin; Barber, Ann; Byrne, Andrew W.; Butler...
Incubation period of COVID-19: a rapid systematic review and meta-analysis of observational research
(2020)
McAloon, Conor G.; Collins, Áine B.; Hunt, Kevin; Barber, Ann; Byrne, Andrew W.; Butler, Francis; Casey, Miriam; Griffin, John M.; Lane, Elizabeth; McEvoy, David; Wall, Patrick G.; Green, M. (Martin); O'Grady, Luke; More, Simon John
Abstract:
Objectives: The aim of this study was to conduct a rapid systematic review and meta-analysis of estimates of the incubation period of COVID-19. Design: Rapid systematic review and meta-analysis of observational research. Setting: International studies on incubation period of COVID-19. Participants: Searches were carried out in PubMed, Google Scholar, Embase, Cochrane Library as well as the preprint servers MedRxiv and BioRxiv. Studies were selected for meta-analysis if they reported either the parameters and CIs of the distributions fit to the data, or sufficient information to facilitate calculation of those values. After initial eligibility screening, 24 studies were selected for initial review, nine of these were shortlisted for meta-analysis. Final estimates are from meta-analysis of eight studies. Primary outcome measures: Parameters of a lognormal distribution of incubation periods. Results: The incubation period distribution may be modelled with a lognormal distribution with ...
http://hdl.handle.net/10197/11488
Marked
Mark
Inferred duration of infectious period of SARS-CoV-2: rapid scoping review and analysis of available evidence for asymptomatic and symptomatic COVID-19 cases
(2020)
Byrne, Andrew W.; McEvoy, David; Collins, Áine B.; Hunt, Kevin; Casey, Miriam; Barber, ...
Inferred duration of infectious period of SARS-CoV-2: rapid scoping review and analysis of available evidence for asymptomatic and symptomatic COVID-19 cases
(2020)
Byrne, Andrew W.; McEvoy, David; Collins, Áine B.; Hunt, Kevin; Casey, Miriam; Barber, Ann; Butler, Francis; Lane, Elizabeth; McAloon, Conor G.; Wall, Patrick G.; More, Simon John; et al.
Abstract:
Objectives. Our objective was to review the literature on the inferred duration of the infectious period of COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, and provide an overview of the variation depending on the methodological approach. Design. Rapid scoping review. Literature review with fixed search terms, up to 1 April 2020. Central tendency and variation of the parameter estimates for infectious period in (A) asymptomatic and (B) symptomatic cases from (1) virological studies (repeated testing), (2) tracing studies and (3) modelling studies were gathered. Narrative review of viral dynamics. Information sources. Search strategies developed and the following searched: PubMed, Google Scholar, MedRxiv and BioRxiv. Additionally, the Health Information Quality Authority (Ireland) viral load synthesis was used, which screened literature from PubMed, Embase, ScienceDirect, NHS evidence, Cochrane, medRxiv and bioRxiv, and HRB open databases. Resu...
http://hdl.handle.net/10197/11464
Marked
Mark
Modeling of alternative testing strategies to demonstrate freedom from Mycobacterium avium ssp. paratuberculosis infection in test-negative dairy herds in the Republic of Ireland
(2019)
Meyer, Anne; McAloon, Conor G.; Tratalos, Jamie A.; More, Simon John; et al.
Modeling of alternative testing strategies to demonstrate freedom from Mycobacterium avium ssp. paratuberculosis infection in test-negative dairy herds in the Republic of Ireland
(2019)
Meyer, Anne; McAloon, Conor G.; Tratalos, Jamie A.; More, Simon John; et al.
Abstract:
In light of the various adverse effects of Johne's disease on animal productivity and the debate on the role of its causative organism, Mycobacterium avium ssp. paratuberculosis, in the etiology of Crohn's disease, major dairy-producing countries around the world have implemented national control programs aimed at reducing the prevalence of this infection in cattle. A pilot control program was initiated in Ireland in 2013, with a key objective to provide farmers with test-negative dairy herds with tools and knowledge to increase their confidence of freedom over time. The aim of this study was to estimate the confidence of freedom obtained in test-negative Irish dairy herds over time with various sampling scenarios and to evaluate the cost-effectiveness of alternative scenarios for achieving an acceptable level of confidence of freedom in herds with no evidence of infection. A stochastic model was developed to simulate repeated annual testing of individual animals using ELI...
http://hdl.handle.net/10197/10580
Marked
Mark
The effect of growth rate on reproductive outcomes in replacement dairy heifers in seasonally calving, pasture-based systems
(2019)
Hayes, Ciara J.; McAloon, Conor G.; Carty, Catherine I.; Ryan, Eoin Gerard; Mee, John F...
The effect of growth rate on reproductive outcomes in replacement dairy heifers in seasonally calving, pasture-based systems
(2019)
Hayes, Ciara J.; McAloon, Conor G.; Carty, Catherine I.; Ryan, Eoin Gerard; Mee, John F.; O'Grady, Luke
Abstract:
The effect of average daily gain (ADG) on reproductive outcomes in replacement dairy heifers was investigated. All heifers were managed in the typical Irish spring calving, pasture-based system, where the herd calves in 1 block between January and April and the majority of the diet comprises grazed grass. Heifer calves (n = 399) from 7 herds were weighed at birth and at the beginning of the breeding season, and ADG was calculated. Service dates and pregnancy diagnosis results were recorded, and conception dates were calculated. Days open (DO) was defined as the number of days between the beginning of the breeding season and conception. Genetic data were retrieved from the Irish Cattle Breeding Federation database. A Cox proportional hazard model was constructed to identify variables with a significant effect on DO. An accelerated failure time model was used to predict survival curves and median survival times for different combinations of the significant variables. The ADG ranged fr...
http://hdl.handle.net/10197/10334
Marked
Mark
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O'Grady, Luke; G...
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O'Grady, Luke; Garcia, AnaBelen; Doherty, Michael L.
Abstract:
Bovine paratuberculosis is a disease characterized by chronic granulomatous enteritis causing protein-losing enteropathy. Adverse effects on animal productivity are key drivers in the attempt to control paratuberculosis at the farm level. Economic models require an accurate estimation of the production effects associated with paratuberculosis. The aim of this study was to conduct a systematic review and meta-analysis to investigate the effect of paratuberculosis on milk production. A total of 20 effect estimates from 15 studies were included in the final meta-analysis. Substantial between-study heterogeneity was observed. Subgroup analysis by case definition and study design was carried out to investigate heterogeneity. The majority of between-study variation was attributed to studies that defined cases on serology. Calculation of a pooled effect estimate was only appropriate for studies that defined cases by organism detection. A reduction in milk yield, corrected for lactation num...
http://hdl.handle.net/11019/2018
Marked
Mark
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O’Grady, Luke; Garcia...
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O’Grady, Luke; Garcia, AnaBelen; Doherty, Michael L.
Abstract:
Bovine paratuberculosis is a disease characterized by chronic granulomatous enteritis causing protein-losing enteropathy. Adverse effects on animal productivity are key drivers in the attempt to control paratuberculosis at the farm level. Economic models require an accurate estimation of the production effects associated with paratuberculosis. The aim of this study was to conduct a systematic review and meta-analysis to investigate the effect of paratuberculosis on milk production. A total of 20 effect estimates from 15 studies were included in the final meta-analysis. Substantial between-study heterogeneity was observed. Subgroup analysis by case definition and study design was carried out to investigate heterogeneity. The majority of between-study variation was attributed to studies that defined cases on serology. Calculation of a pooled effect estimate was only appropriate for studies that defined cases by organism detection. A reduction in milk yield, corrected for lactation num...
http://hdl.handle.net/11019/2095
Marked
Mark
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O’Grady, Luke; Garcia...
The effect of paratuberculosis on milk yield—A systematic review and meta-analysis
(2020)
McAloon, Conor G.; Whyte, Paul; More, Simon J.; Green, Martin J.; O’Grady, Luke; Garcia, AnaBelen; Doherty, Michael L.
Abstract:
Bovine paratuberculosis is a disease characterized by chronic granulomatous enteritis causing protein-losing enteropathy. Adverse effects on animal productivity are key drivers in the attempt to control paratuberculosis at the farm level. Economic models require an accurate estimation of the production effects associated with paratuberculosis. The aim of this study was to conduct a systematic review and meta-analysis to investigate the effect of paratuberculosis on milk production. A total of 20 effect estimates from 15 studies were included in the final meta-analysis. Substantial between-study heterogeneity was observed. Subgroup analysis by case definition and study design was carried out to investigate heterogeneity. The majority of between-study variation was attributed to studies that defined cases on serology. Calculation of a pooled effect estimate was only appropriate for studies that defined cases by organism detection. A reduction in milk yield, corrected for lactation num...
http://hdl.handle.net/11019/2283
Marked
Mark
The Herd-Level Sensitivity of Abattoir Surveillance for Bovine Tuberculosis: Simulating the Effects of Current and Potentially Modified Meat Inspection Procedures in Irish Cattle
(2019)
Willeberg, Preben W.; McAloon, Conor G.; Houtsma, Erik; Higgins, Isabella M.; Clegg, Tr...
The Herd-Level Sensitivity of Abattoir Surveillance for Bovine Tuberculosis: Simulating the Effects of Current and Potentially Modified Meat Inspection Procedures in Irish Cattle
(2019)
Willeberg, Preben W.; McAloon, Conor G.; Houtsma, Erik; Higgins, Isabella M.; Clegg, Tracy Ann; More, Simon John
Abstract:
The European Food Safety Authority (EFSA) has published a series of opinions to assess the impact of changing from the current meat inspection procedures (CMI) to visual-only inspection (VOI) procedures. Concern has been raised that changes from CMI to VOI would adversely affect the effectiveness of surveillance for bovine tuberculosis (bTB) in EU member states, both for countries with and without official status of bTB freedom (OTF and non-OTF countries, respectively). This study was conducted to estimate the impact of a change from CMI to VOI in abattoirs on herd-level detection sensitivity in Ireland, a non-OTF country. Using national Irish data, we identified all herds that sold at least one animal to slaughter during 2010-12 whilst unrestricted for bTB. For each of these herds, we calculated the number of cattle sent to slaughter whilst unrestricted, the number of factory lesion tests (FLT) that had been performed, and estimated the apparent within-herd prevalence (APwh). A FLT...
http://hdl.handle.net/10197/10108
Marked
Mark
The prevalence, temporal and spatial trends in bulk tank equivalent milk fat depression in Irish milk recorded herds.
(2018)
Carty, Catherine I.; Fahey, Alan G.; Sheehy, Morgan R.; Taylor, Steve; Lean, Ian J.; Mc...
The prevalence, temporal and spatial trends in bulk tank equivalent milk fat depression in Irish milk recorded herds.
(2018)
Carty, Catherine I.; Fahey, Alan G.; Sheehy, Morgan R.; Taylor, Steve; Lean, Ian J.; McAloon, Conor G.; O'Grady, Luke; Mulligan, Finbar J.
Abstract:
Milk fat is important in terms of economic value and in its potential to provide information concerning cow diet and health. Under current milk payment schemes in Ireland farmer income is directly linked to milk fat production.
University College Dublin
Devenish Nutrition
http://hdl.handle.net/10197/9382
Displaying Results 1 - 11 of 11 on page 1 of 1
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Institution
Teagasc (3)
University College Dublin (8)
Item Type
Journal article (7)
Other (4)
Peer Review Status
Peer-reviewed (3)
Unknown (8)
Year
2020 (6)
2019 (4)
2018 (1)
built by Enovation Solutions