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United States Department of Agriculture

Agricultural Research Service

Related Topics

Samarpita Walker
Produce Safety and Microbiology Research
Biological Science Technician

Phone: (510) 559-6467
Fax: (510) 559-6162
Room WABC4

USDA, ARS, PWA, WRRC-PSM
800 BUCHANAN STREET
ALBANY , CA 94710


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
High genotypic and phenotypic similarity among Shiga toxin-producing Escherichia coli O111 environmental and outbreak strains Reprint Icon -
Diodati, M.E., Bates, A.H., Cooley, M.B., Walker, S., Mandrell, R., Brandl, M. 2015. High genotype and phenotypic similarity among Shiga toxin-producing Escherichia coli O111 environmental and outbreak strains. Foodborne Pathogens and Disease. 12:235-243.
Comparison of subtypes of Listeria monocytogenes isolates from naturally contaminated watershed samples using a combination of non-selective and selective enrichment methods -
Gorski, L.A., Walker, S., Liang, A.S., Nguyen, K.M., Govoni, J.A., Carychao, D.K., Cooley, M.B., Mandrell, R.E. 2014. Comparison of subtypes of Listeria monocytogenes isolates from naturally contaminated watershed samples using a combination of non-selective and selective enrichment methods. PLoS One. 9(3):e92467. DOI: 10.1371/journal.pone.009246.
Development of a robust methos for isolation of shiga toxin positive Escherichia coli (STEC) from fecal, plant, soil and water samples from leafy greens production region in California -
Cooley, M.B., Jay-Russell, M., Atwill, E.R., Carychao, D.K., Nguyen, K.M., Quinones, B., Patel, R., Walker, S., Swimley, M., Pierre-Jerome, E., Gordus, A., Mandrell, R.E. 2013. Development of a robust methos for isolation of shiga toxin positive Escherichia coli (STEC) from fecal, plant, soil and water samples from leafy greens production region in California. PLoS One. 8(6):e65716. doi:10.1371/journal.pone.0065716.
Diversity of pulsed field gel electrophoresis pulsotypes, serovars and antibiotic resistance among Salmonella isolates from wild amphibians and reptiles in the California central coast -
Gorski, L.A., Jay-Russell, M., Liang, A.S., Walker, S., Bengson, Y., Govoni, J.A., Mandrell, R.E. 2013. Diversity of pulsed field gel electrophoresis pulsotypes, serovars and antibiotic resistance among Salmonella isolates from wild amphibians and reptiles in the California central coast. Foodborne Pathogens and Disease. 10:540-548.
E. coli serotype O55:H7 diversity supports parallel acquisition of bacteriophage at Shiga toxin phage insertion sites during evolution of the O157:H7 lineage Reprint Icon -
Kyle, J.L., Cummings, C.A., Parker, C., Quinones, B., Vatta, P., Newton, E., Huynh, S., Swimley, M.S., Degoricija, L., Barker, M., Fontanoz, S., Nguyen, K.M., Patel, R.N., Fang, R., Tebbs, R., Petrauskene, O., Furtado, M., Mandrell, R.E. 2012. E. coli serotype O55:H7 diversity supports parallel acquisition of bacteriophage at Shiga toxin phage insertion sites during evolution of the O157:H7 lineage. Journal of Bacteriology. 194:1885-1896.
EXTENDED MULTILOCUS SEQUENCE TYPING SYSTEM FOR CAMPYLOBACTER COLI, C. LARI, C. UPSALIENSIS, AND C. HELVETICUS. -
Miller, W.G., On, S., Wang, G., Fontanoz, S., Lastovica, A., Mandrell, R.E. 2005. Extended multilocus sequence typing system for campylobacter coli, c. lari, c. upsaliensis, and c. helveticus. Journal of Clinical Microbiology. 43(5).2315-2329.
Last Modified: 5/2/2016
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