individual publications

• academic article

  • Landscape and Meteorological Factors Affecting Prevalence of Three Foodborne Pathogens in Fruit and Vegetable Farms. .  Applied Environmental Microbiology.  79:588-600. 2013
  • Recombination and positive selection contributed to the evolution of Listeria monocytogenes lineages III and IV, two distinct and well supported uncommon L. monocytogenes lineages.  Infection, Genetics, and Evolution.  11:1881-1890. 2011
  • Some Listeria monocytogenes outbreak strains demonstrate significantly lower invasion, inlA transcript levels and swarming motility in vitro.  Applied and Environmental Microbiology.  75:5647-5658. 2009
  • Lineage specific recombination and positive selection in coding and intragenic regions contributed to evolution of the main Listeria monocytogenes virulence cluster.  Infection Genetics and Evolution.  8:566-576. 2008
  • Lineage specific recombination rates and microevolution in Listeria monocytogenes.  BMC Evolutionary Biology.  8:277. 2008
  • inlA premature stop codons are common among Listeria monocytogenes isolated from foods and yield virulence-attenuated strains that confer protection against infection by fully virulent L. monocytogenes strains.  Applied Environmental Microbiology.  74:6570-6583. 2008
  • Distribution of Internalin Gene Profiles of Listeria monocytogenes Isolates from Different Sources Associated with Phylogenetic Lineages.  Foodborne Pathogens and Disease.  4:222-232. 2007
  • Listeria monocytogenes fecal shedding in dairy cattle shows high levels of day-to-day variation and includes outbreaks and sporadic cases of shedding of specific L. monocytogenes subtypes.  Prev Vet Med.  80:287-305. 2007
  • A novel method for same source cluster analysis in phylogenetic trees shows that Listeria monocytogenes contains niche-adapted clonal groups with distinct ecological preferences.  Journal of Clinical Microbiology.  44. 2006
  • Associations among Listeria monocytogenes genotypes and distinct clinical manifestations of listeriosis in cattle.  American Journal of Veterinarian Research.  67:616-626. 2006
  • Listeria monocytogenes internalins are highly diverse and evolved by recombination and positive selection.  Infection, Genetics and Evolution.  6:378-389. 2006
  • Molecular characterization of Listeria monocytogenes from natural and urban environments.  Journal of Food Protection.  69:93-105. 2006
  • Evaluation of farm-management practices as risk factor for clinical listeriosis and fecal shedding of Listeria monocytogenes in ruminants.  J Am Vet Med Assoc.  227:1808-1814. 2005
  • Evolution and molecular phylogeny of Listeria monocytogenes isolated from human and animal listeriosis cases and foods.  Journal of Bacteriology.  187. 2005
  • Select Listeria monocytogenes subtypes commonly found in foods carry distinct nonsense mutations in inlA, leading to expression of truncated and secreted internalin A, and are associated with a reduced invasion phenotype for human intestinal epithelial cells.  Applied and Environmental Microbiology.  71:8764-8772. 2005
  • Ecology and transmission of Listeria monocytogenes infecting ruminants and in the farm environment.  Applied and Environmental Microbiology.  70:4458-4467. 2004
  • Tracking of Listeria monocytogenes in smoked fish processing plants.  Journal of Food Protection.  67. 2004

• article

  • Next-Generation Sequencing Methods Revolutionize Food Microbiology 2011

• conference paper

  • Pathogens in Produce Production Environments: A Longitudinal Study of Fruit and Vegetable Farms in New York State.  2011 IAFP Annual Conference Proceedings. 2011
  • Listeria monocytogenes contains two species-like evolutionary lineages and subtypes with reduced invasiveness.  Molecular Methods in Milk Quality Symposium Proceedings (Cornell University). 2004

• conference poster

  • Molecular Ecology of Listeria in Small and Very Small Ready-To-Eat Meat Processing Plants. 2009
  • Utilization of a Multiplex Single Nucleotide Polymorphism (SNP) Genotyping Assay to Determine the Prevalence of Virulence-Attenuating Mutations in inlA among Human Clinical and Food isolates. 2009
  • Variation in Listeria monocytogenes dose response in relation to Internalin A subtypes 2009

• document part

  • A longitudinal study on Listeria monocytogenes contamination patterns in small and very small ready-to-eat meat processing plants 2008