D
David Melka
Researcher at Center for Food Safety and Applied Nutrition
Publications - 25
Citations - 1600
David Melka is an academic researcher from Center for Food Safety and Applied Nutrition. The author has contributed to research in topics: Outbreak & Salmonella. The author has an hindex of 15, co-authored 25 publications receiving 1294 citations. Previous affiliations of David Melka include Food and Drug Administration.
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Journal ArticleDOI
Photogenerated Charge Carriers and Reactive Oxygen Species in ZnO/Au Hybrid Nanostructures with Enhanced Photocatalytic and Antibacterial Activity
Weiwei He,Hyun-Kyung Kim,Hyun-Kyung Kim,Wayne G. Wamer,David Melka,John H. Callahan,Jun-Jie Yin +6 more
TL;DR: The successful deposition of Au NPs, having sizes smaller than 3 nm, onto ZnO NPs is demonstrated and these materials have great potential for use in water purification and antibacterial products.
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Practical value of food pathogen traceability through building a whole-genome sequencing network and database
Marc W. Allard,Errol Strain,David Melka,Kelly Bunning,Steven M. Musser,Eric W. Brown,Ruth Timme +6 more
TL;DR: The FDA has created a United States-based open-source whole-genome sequencing network of state, federal, international, and commercial partners to provide an international rapid surveillance system for pathogen traceback, critical to support an effective public health response to bacterial outbreaks.
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Whole Genome and Core Genome Multilocus Sequence Typing and Single Nucleotide Polymorphism Analyses of Listeria monocytogenes Isolates Associated with an Outbreak Linked to Cheese, United States, 2013
Yi Chen,Yan Luo,Heather A. Carleton,Ruth Timme,David Melka,Tim Muruvanda,Charles Wang,George Kastanis,Lee S. Katz,Lauren Turner,Angela Fritzinger,Terence Moore,Robert Stones,Joseph Blankenship,Monique Salter,Mickey E. Parish,Thomas S. Hammack,Peter Evans,Cheryl L. Tarr,Marc W. Allard,Errol Strain,Eric W. Brown +21 more
TL;DR: The data suggest that SNP/allele counts should always be combined with WGS clustering analysis generated by phylogenetically meaningful algorithms on a sufficient number of isolates, and the SNP-allele threshold alone does not provide sufficient evidence to delineate an outbreak.
Journal ArticleDOI
Listeria monocytogenes in Stone Fruits Linked to a Multistate Outbreak: Enumeration of Cells and Whole-Genome Sequencing
Yi Chen,Laurel S. Burall,Yan Luo,Ruth Timme,David Melka,Tim Muruvanda,Justin Payne,Charles Wang,George Kastanis,Anna Maounounen-Laasri,Antonio J. De Jesus,Phillip Curry,Robert Stones,Okumu K'Aluoch,Eileen Liu,Monique Salter,Thomas S. Hammack,Peter Evans,Mickey E. Parish,Marc W. Allard,Atin R. Datta,Errol Strain,Eric W. Brown +22 more
TL;DR: The diversity among the outbreak-associated isolates and the inclusion of PFGE-matched, but epidemiologically unrelated, isolates demonstrate the high resolution of WGS.
Journal ArticleDOI
Ecological prevalence, genetic diversity, and epidemiological aspects of Salmonella isolated from tomato agricultural regions of the Virginia Eastern Shore.
Rebecca L. Bell,Jie Zheng,Erik Burrows,Sarah M. Allard,Charles Wang,Christine E. Keys,David Melka,Errol Strain,Yan Luo,Marc W. Allard,Steven L. Rideout,Eric W. Brown +11 more
TL;DR: Nearly all isolates collected during two growing seasons of surveillance were obtained from surface water and sediment sources pointing to these sites as long-term reservoirs for persistent and endemic contamination of this environment.