Mara joined our laboratory as a Food Science Summer Scholar in the summer of 2001. She worked in the lab until her graduation in May 2002. She worked on the application of DNA sequencing based subtyping to probe the evolution of the human and animal pathogen Streptococcus agalactiae. She also played in important role in setting up various computer programs for evolutionary analyses in the lab and in helping in evolutionary analyses of L. monocytogenes.
Karlyn looked at the role of the LisR-K regulatory system in the activation of Sigma B in Listeria monocytogenes. After graduation, she worked as a technician in the Food Safety Lab. She has done a fellowship at CDC, and will be a Ph.D. student at the University of Washington in Seattle.
Courtney worked in both Dr.Wiedmann's and Dr. Boor's laboratories. Her work involved evolutionary analysis of the human and animal pathogen Streptococcus agalactiae. She also worked with Celine Nadon developing reporter fusions to study gene expression in Listeria monocytogenes.
Tasha was one of our 2004 Food Science Summer Scholars and worked on obtaining MLST data in 14 human listeriosis outbreaks and comparing them to 150 L. monocytogenes isolates not connected to any listeriosis outbreaks.
Theresa joined our laboratory as a Food Science Summer Scholar in the summer of 2001 and worked in the lab until her graduation in May 2002. She worked with Angela Roberts to probe the effects of allelic variation on virulence characteristics of Listeria monocytogenes . She also contributed to the development of the DNA sequencing-based subtyping methods for L. monocytogenes.
Mary visited from Colorado State University where she was a junior in the veterinary medicine program. Participating in the Cornell Leadership Program for Veterinary Students in the summer of 2002, she worked on Streptococcus uberis research.
LeRoy was a visiting summer scholar from Singapore. He worked with Hup on inlA sequencing of bovine fecal isolates to detect the presence of a premature stop codon which may enhance the ability of L. monocytogenes to be shed fecally and/or to establish a carrier state. He also worked on sigB sequencing of Listeria spp. isolates from pristine and urban environments.
Clarence was a visiting Singapore student in 2004 working on: 1) testing the hypothesis that a truncated inlA gene is more commonly found in food than infected humans through DNA sequencing, 2) plaque assays with Kendra Nightingale, and 3) watching PFGE and ribotyping with Katy Windham.
Elaine spent seven weeks in the summer of 2001 working in our lab as part of the overseas training program. She worked on the development of reporter fusions to probe sigma B dependent gene expression in Listeria monocytogenes.
Mike worked in the laboratory from May 2000 until May 2002. He played a key role in the development of the PathogenTracker bacterial subtype and strains database. His also contributed to research on the rational development of improved DNA sequencing methods to subtype bacterial pathogens and to probe their evolution. He currently attends medical school at Albert Einstein Medical College in New York City.
Taylor Cookingham participated in the 2002 Summer Scholar Program as a visiting sophomore Food Science major from the University of Florida. Interested in pursuing a career in new product development, she worked with Vicki Lappi, tracking Listeria monocytogenes through the seafood industry.
Gabriela Andrea Cortez Ramos, a Biology (B.S.) undergrad from Universidad Simón Bolívar and in the CienciAmerica Summer Research Program, was working with Veronica Guariglia (Ph.D.) studying the effect of bile on Listeria monocytogenes after pre-exposure to low pH.
Mary Pat worked on the evolutionary characterization of human and animal isolates of Streptococcus agalactiae in regard to the housekeeping gene sodA. She also used DNA sequence based subtyping methods to probe the evolutionary relationships of bovine Salmonella enterica isolates.
Birla participated in the 2001 Leadership Alliance Summer Research Program at Cornell and spent 9 weeks in our laboratory. She worked on DNA-based subtyping methods to characterize Listeria monocytogenes subtypes that cause human disease.
Emmie was a participant in the 2003 Summer Scholar Program, working with Sarita on stress response in L. monocytogenes using the prfA/sigB double mutant. She also worked on Ruth Zadok's and Mark Kazmierczak's projects.
Mariel was a presidential research scholar. She started working in our laboratory in spring of 2001 and worked on DNA-based subtyping to explore the clonal structure of Listeria monocytogenes until she graduated.
Stacyann was a 2004 Food Science Summer Scholar working on making a delete lmo1433 mutant. She continued working with Ute Schwab, among others, on studying the host-pathogen interaction between C. elegans and Listeria monocytogenes.
Joyanna was a Food Science Summer Scholar in the MQIP lab. She was a student at Liberty University in Lynchburg, VA majoring in biochemistry. While here, she characterized the microbial diversity of freshly pasteurized milk using rpoB subtyping methods.
Matt worked on the environmental sampling project with Rachel, Travis, and Laura. The project focused on the collection, isolation, and molecular characterization of foodborne pathogens with a specific interest in the mdh gene in isolated samples of E. coli.
On an attachment program to Cornell University in the summer of 2002, at the end of the 2nd year of a 3 year Biotechnology Course at Ngee Ann Polytechnic, Singapore, Zhisheng's research interests revolved around the ecology and evolution of Listeria monocytogenes.
Jessica was working to sequence the gene panB (a “housekeeping gene”) in several Salmonella serotypes. This work is part of a larger project being done by Sharinne Sukhnanand in the Laboratories of Food Microbiology and Food Safety to look at the evolutionary relationships among different Salmonella serotypes.
Alana was testing the hypothesis that the bovine udder pathogen Streptococcus uberis could be a contagious pathogen and transmitted from cow to cow. This work was part of a larger project on the molecular epidemiology of bovineStreptococci being done by R. N. Zadoks in the Laboratories of Food Microbiology and Food Safety in collaboration with Cornell's Quality Milk Production Services.
Anthea was a visiting vet student from Australia working on L. monocytogenes transmission in cattle. She performed evolutionary analysis on the actA and inlA genes from isolates collected during a longitudinal study of cows from a herd at Cornell, as well as developing both L. mono specific and non-specific immunological assays for use in cattle.
Sarah assisted with media and labware preparation for experimental use. As a summer scholar in 2013, Sarah researched sporeformers in cultured dairy products and microorganisms in milk with sensory defects.
Stephen's interests were in the determination of how the expression of thermostable direct hemolysin (TDH) contritutes to the pathogenesis of Vibrio parahaemolyticus O3:K6. He worked on the construction of tdh promoter-lacZ fusion.
Maria was a Food Science Summer Scholar in the MQIP lab. She identified bacterial groups contributing to the preliminary incubation counts of raw milk and determining their effects on the self-life of the final product.
On an attachment program to Cornell University in the summer of 2002, at the end of the 2nd year of a 3 year Biotechnology Course at Ngee Ann Polytechnic, Singapore, Fok Moon's research interests concerned the characterization ofVibrio parahaemolyticus.
Marie spent the summer of 2000 in our laboratory as a participant in the Cornell University Undergraduate Summer Research Program. Her project involved molecular subtyping of human L. monocytogenes isolates to further explore the specific characteristics of L. monocytogenes which cause human disease.
Clayton worked in the lab as a participant in the 2002 Summer Scholar Program, developing a protocol for the isolation of Streptococcus uberis from soil, fecal, and other samples using selective and differential media. He will receive his Bachelors degree in Food Science at Utah State University in 2003.
Marilia was a Food Science Summer Scholar working on her undergraduate degree in Microbiology. She explored the detection and characterization of Listeria monocytogenes-specific bacteriophages on dairy farms.
As an undergrad, Sam worked on the cold-growth characterization of sporeformers isolated from pasteurized fluid milk and on challenge studies for mold growth and detection in Greek yogurt and cheese. He also worked with PhD student Steph Masiello.
Mary was a 2006 Food Science Summer Scholar. She worked in the Milk Quality Improvement lab, concentrating on sources of Bacillus contamination in mik. She also studied the relationship between pasteurization temperatures and fluid milk shelf life.
Hup was a visiting scholar from Singapore. He worked with LeRoy on: 1) inlA sequencing of bovine fecal isolates to detect the presence of a premature stop codon which may enhance the ability of L. monocytogenes to be shed fecally and/or to establish a carrier state, and 2) sigB sequencing of Listeria spp. isolates from pristine and urban environments.
Art was utilizing micribiological and genetic techniques to sequence and analyze a series of Listeria monocytogenes isolates for the Cornell-CDC Listeria subtyping study. The first gene to be studied was actA and is responsible for L. monocytogenes movement through host cells.
Jessica used the Multi-Locus Seqence Typing method to sequence seven housekeeping genes of Shiga Toxin- Producing E.coli. She examined STEC from beef cattle pastures and pristine environments and find differences in genes that could show how they related, analyze if soil and water from these environments were reservoirs for E.coli and to examine if genes were moving between environments.