Patrick Wall

ORCID: 0000-0001-5233-8714
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About
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Research Areas
  • Salmonella and Campylobacter epidemiology
  • Food Safety and Hygiene
  • Viral gastroenteritis research and epidemiology
  • COVID-19 epidemiological studies
  • Consumer Attitudes and Food Labeling
  • Risk Perception and Management
  • Enterobacteriaceae and Cronobacter Research
  • Health disparities and outcomes
  • Nutritional Studies and Diet
  • COVID-19 Digital Contact Tracing
  • Agriculture Sustainability and Environmental Impact
  • Listeria monocytogenes in Food Safety
  • Bacteriophages and microbial interactions
  • Parasitic Infections and Diagnostics
  • Zoonotic diseases and public health
  • Psychological Well-being and Life Satisfaction
  • Obesity, Physical Activity, Diet
  • Climate Change Communication and Perception
  • COVID-19 and healthcare impacts
  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • Animal Disease Management and Epidemiology
  • Travel-related health issues
  • Escherichia coli research studies
  • COVID-19 and Mental Health

University College Dublin
2015-2024

Zhejiang Gongshang University
2024

Sun Yat-sen University
2024

University of Leeds
2017-2024

National University of Ireland
2019-2020

Estación Experimental del Zaidín
2017

Agriculture and Agri-Food Canada
2017

Aberystwyth University
2017

Mater Misericordiae Hospital
2009

Diageo (Ireland)
2008

Objectives Our objective was to review the literature on inferred duration of infectious period COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, and provide an overview variation depending methodological approach. Design Rapid scoping review. Literature with fixed search terms, up 1 April 2020. Central tendency parameter estimates for in (A) asymptomatic (B) symptomatic cases from (1) virological studies (repeated testing), (2) tracing (3) modelling...

10.1136/bmjopen-2020-039856 article EN cc-by-nc BMJ Open 2020-08-01

Objectives The aim of this study was to determine the relative infectiousness asymptomatic SARS-CoV-2 infected persons compared with symptomatic individuals based on a scoping review available literature. Design Rapid peer-reviewed literature from 1 January 5 December 2020 using LitCovid database and Cochrane library. Setting International studies SARS-CoV-2. Participants Studies were selected for inclusion if they defined asymptomatics as separate cohort distinct presymptomatics provided...

10.1136/bmjopen-2020-042354 article EN cc-by-nc-nd BMJ Open 2021-05-01

<h3>Abstract</h3> <b>Objectives</b>: To identify the source of an international outbreak food poisoning due to Salmonella agona phage type 15 and measure how long underlying cause persisted. <b>Design</b>: Case-control study 16 primary household cases 32 controls similar age dietary habit. Packets implicated foodstuff manufactured on a range days were examined for salmonella. All isolates epidemic further characterised by pulsed field gel electrophoresis. <b>Results</b>: 27 identified, which...

10.1136/bmj.313.7065.1105 article EN BMJ 1996-11-02

This is a case-control study aimed at identifying risk factors for intestinal infection with Campylobacter jejuni. Cases were defined as subjects diarrhoea occurring in community cohorts or presenting to General Practitioners (GPs) jejuni stools. Controls selected from GP lists cohorts, matched by age, sex, and practice. Travel abroad consumption of chicken restaurant statistically significantly associated being case. There was no significant other than restaurants nor reported domestic...

10.1017/s0950268801006057 article EN Epidemiology and Infection 2001-10-01

The microbial contamination of air filters and possible links to contaminated product in a powdered milk protein-processing facility were investigated. Over 10-month period, seven filters, the environment, analyzed for presence Cronobacter spp. effects filter installation, maintenance, subsequent dissemination A total 30 isolates characterized by pulsed-field gel electrophoresis (PFGE). PFGE revealed three clonal populations distributed throughout manufacturing site. This study highlights...

10.1128/aem.00745-08 article EN Applied and Environmental Microbiology 2008-07-19

Abstract Objective To estimate the proportion of pre-symptomatic transmission SARS-CoV-2 infection that can occur and timing relative to symptom onset. Setting/design Secondary analysis international published data. Data sources Meta-analysis COVID-19 incubation period a rapid systematic review serial interval generation time, which are separately. Participants Studies were selected for if they had transparent methods data provided enough information simulate full distributions or time....

10.1101/2020.05.08.20094870 preprint EN cc-by-nd medRxiv (Cold Spring Harbor Laboratory) 2020-05-11

To examine the relationship between type of skin incision and postoperative wound complications in an obese population.A hospital-based perinatal database was used to identify women with a body mass index (BMI) greater than 35 undergoing their first cesarean delivery. Hospital outpatient medical records were reviewed for following variables: age, insurance status, BMI, gestational age at delivery, birth weight, smoking history, prior abdominal surgery, existing comorbidities, preoperative...

10.1016/s0029-7844(03)00861-5 article EN Obstetrics and Gynecology 2003-11-01

Nucleotide polymorphism associated with the O-antigen-encoding locus, rfb, in Enterobacter sakazakii was determined by PCR-restriction fragment length analysis. Based on analysis of these DNA profiles, 12 unique banding patterns were detected among a collection 62 strains from diverse origins. Two common profiles identified and designated serotypes O:1 O:2. sequencing 12,500-bp region flanked galF gnd 11 open reading frames, all same transcriptional direction. Analysis proximal both...

10.1128/aem.02302-07 article EN Applied and Environmental Microbiology 2008-04-26

ObjectiveTo examine the use of nutrition and health claims on packaged foods commonly eaten in Ireland.DesignAn assessment labels food products that are Ireland to determine level claims. Where present, exact text as observed was recorded for seventeen different categories categorised accordance with EU Regulation 1924/2006 made foods.SettingFour retailers Dublin, Ireland.ResultsOf surveyed, 47·3 % carried a claim 17·8 claim. Frozen fruit & vegetables Breakfast cereals were highest...

10.1017/s1368980009991613 article EN public-domain Public Health Nutrition 2009-09-28

The world of communication has changed significantly in the last decade as a result evolution social media. Food crisis managers and communicators should be cognizant messages presented to public by all media channels during crisis. Using 2008 Irish dioxin contamination incident an example, quantitative content analysis was carried out investigate relationship between traditional Messages published printed newspapers ( n = 141), blogs forums 107), Twitter 68) were analysed sourcing practice,...

10.1177/0963662512472315 article EN Public Understanding of Science 2013-02-01

Social media is a particular communication platform which has witnessed an exponential growth in use and influence recent years, democratising the process, offering risk communicators way of putting into practice those principles are advocated to be at core management communication. However, little known about stakeholders' willingness embrace this new form food crisis. The current study presented exploratory investigation opinions Irish stakeholders on position crisis, with focus...

10.1080/13669877.2014.961517 article EN Journal of Risk Research 2014-09-26
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