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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.)
Comparison of subtypes of Listeria monocytogenes isolates from naturally contaminated watershed samples using a combination of non-selective and selective enrichment methods - (Peer Reviewed Journal)
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. e92467.
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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. - (Peer Reviewed Journal)
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: 7/30/2014
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