Niall Delappe

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Shigella sonnei is a significant cause of gastroenteritis in both developing and industrialized countries. Definition of the diversity and antimicrobial susceptibility of S. sonnei isolates may be helpful in the management of individual cases and outbreaks. Antimicrobial susceptibility testing and pulsed-field gel electrophoresis (PFGE) were performed with(More)
During investigation of an episode of Salmonella enterica serovar Kedougou contamination of mushrooms, multiple closely related isolates were obtained from mushrooms and mushroom-growing materials. Contamination apparently originated from sugar beet lime, an alkaline material used in mushroom growing. No associated cases of human infection were detected.
Salmonella enterica serovar Typhimurium is frequently isolated from humans and animals. Phage typing is historically the first-line reference typing technique in Europe. It is rapid and convenient for laboratories with appropriate training and experience, and costs of consumables are low. Phage typing and pulsed-field gel electrophoresis (PFGE) were(More)
Salmonella enterica subsp. enterica serovar Typhimurium is a common zoonotic pathogen encountered in Irish pigs and the pork industry and its characterisation using highly discriminatory typing methods is necessary for epidemiological studies, outbreak investigation and control. Multiple locus variable number of tandem repeat analysis (MLVA), phage typing(More)
Listeria monocytogenes is an important foodborne human pathogen. Human infection is associated with high mortality rates. Epidemiological investigation and molecular subtyping can be useful in linking human illness with specific sources of infection. This retrospective study describes the use of PFGE to examine relationships of 222 isolates from human and(More)
OBJECTIVES To employ a combination of phenotypic and genotypic subspecies typing methods to aid in an epidemiological investigation of an outbreak of Salmonella bredeney involving ten persons. METHODS Isolates were characterised by employing antibiogram typing, in addition to two genotyping techniques, including pulsed field gel electrophoresis (PFGE),(More)
BACKGROUND In Ireland, salmonellosis is the second most common cause of bacterial gastroenteritis. A new electronic system for reporting (Computerised Infectious Disease Reporting--CIDR) of Salmonella cases was established in 2004. It collates clinical (and/or laboratory) data on confirmed and probable Salmonella cases. The authors studied the completeness(More)
Between 1998 and 2003, 5,161 isolates (3,182 human) of Salmonella enterica were received by the National Salmonella Reference Laboratory of Ireland. Serotyping, antimicrobial susceptibility testing and phage typing were performed by standard methods. The number of isolates of S. enterica serovar Typhimurium decreased from 579 (80%) in 1998 to 208 (19%) in(More)
Resistance or susceptibility of Salmonella enterica to streptomycin is widely used as an epidemiological marker. However, there is no clear consensus on the interpretation of streptomycin susceptibility test results. Comparison of results obtained with the Clinical and Laboratory Standards Institute (CLSI) disk diffusion method, the minimum inhibitory(More)
Listeria monocytogenes is a Gram-positive opportunistic pathogen that is the causative agent of listeriosis. Here, we report the draft genome sequences of 25 L. monocytogenes strains isolated from patients with clinical listeriosis in the Republic of Ireland between 2013 and 2015.