Xunde Li

Xunde Li

Researcher

Population Health & Reproduction


Education
2000, PhD, University of Rouen, Rouen, France
1990, MS, Jilin University, China
1987, BS, Jilin Agricultural University, China
Active Research Grants
Co-Investigator, Reducing occupational exposure to zoonotic pathogens in California dairy farm workers, Atwill (Principal Investigator), National Institute for Occupational Safety and Health (CDC)
Principal Investigator, Antimicrobial resistance in different origins, types, and forms of seafood, (Principal Investigator), USDA NIFA Formula Funds (CFAH)
Principal Investigator, A rapid study on occupational exposure to antibiotic resistant bacteria in poultry farming , (Principal Investigator), Western Center of Agricultural Health and Safety (WCAHS)
Principal Investigator, Seasonal subtropical highland climates impact on dairy cattle health in Central Mexico using Cryptosporidium as a biomarker, (Principal Investigator), UC Davis Global Affairs/VMDO
Co-Principal Investigator, New Approaches to the Holy Grail of Poultry Food Safety: Strain Level Identification and Quantification of Salmonella and Campylobacter in Retail Poultry, Maurice Pitesky (Principal Investigator), CFAH
Principal Investigator, Extending NARMS surveillance of antibiotic resistance in retail foods in California, (Principal Investigator), FDA
Principal Investigator, Enhancing NARMS surveillance of antibiotic resistance in retail foods in Hawaii , (Principal Investigator), FDA
Co-Principal Investigator, Tackling Antimicrobial Resistance at a Global Scale: Whole Genome Sequencing of ESBL-producing E. coli from Livestock in Four Continents, Richard Pereira (Principal Investigator), UC Davis Global Affairs/VMDO
Honors and Awards
2009 Scientific Cooperation Exchange Program between USDA and China’s Ministry of Agriculture, invited expert of U.S. Team #4: “Rapid detection technologies for food safety, environmental and agricultural applications”, October 10-25.
2000-2001 USDA and USEPA joint research scholarship
1998-2000 Scholarship, awarded by Normandy Association of Parasitology Research, France
Most Recent Five Book Chapters
2020 Ji P, Li X, Liu Y: Chapter 2: Dietary Intervention to Reduce E. coli Infectious Diarrhea in Young Pigs, Rodrigo L, (ed), E. Coli Infections - Importance of Early Diagnosis and Efficient Treatment, . .
2019 Robles Jimenez LE, Angeles Hernandez JC, Osorio Avalos J, Li X, Atwill ER, Castelan Ortega O, Gonzalez Ronquillo M: Veterinary Antibiotics in Animal Diet: Effects on Waste/Environment, , Bioactive Molecules in Food, . 1775-1792.
2013 Chen S, Li X, Li J, Atwill ER: Chapter 8: Rapid detection of Brucella spp. using loop-mediated isothermal amplification (LAMP), Kolpashchikov DM, Gerasimova YV, (ed), Methods in Molecular Biology: Nucleic Acid Detection: Methods and Protocols, . 99-108.
2012 Atwill ER, Li X, Grace D, Gannon V: Chapter 3: Zoonotic waterborne pathogen loads in livestock, Dufour A, Bartram J, Bos R, Gannon V, (ed), Animal Waste, Water Quality and Human Health, WHO, London, UK. 73-114.
2012 Atwill ER, Partyka M, Bond RF, Li X, Xiao C, Karle B, Kiger LE: An introduction to waterborne pathogens in agricultural watersheds, , Natural Resources Conservation Service, United States Department of Agriculture, . 1-84.
Research Focus
  • Source, persistence and transmission of microbial pathogens in the agroecosystem
  • Molecular epidemiology of foodborne zoonotic pathogens
  • Laboratory testing of bacterial susceptibility to antimicrobials
  • Antimicrobial resistance of enteric bacteria in livestock and the foodchain
  • Ecology of bacterial antimicrobial resistance
  • Evaluation of alternatives to antibiotics
Specialty Focus
The overall goal of my research is to protect the health of animals and the public and improve food safety through laboratory and field-based studies on the sources, ecology, and transmission of bacterial and protozoal pathogens and bacterial antimicrobial resistance.
Ten Recent Publications

2021
Jeamsripong S, Li X^, Aly SS, Su Z, Pereira RV, Atwill ER
Antibiotic resistance genes and associated phenotypes in Escherichia coli and Enterococcus from cattle at different production stages on a dairy farm in Central California

2021
Kim K, He Y, Jinno C, Kovanda L, Li X, Song M, Liu Y
Trace amounts of antibiotic exacerbated diarrhea and systemic inflammation of weaned pigs infected with a pathogenic E. coli

2021
Pandit PS, Williams DR, Rossitto P, Adaska JM, Pereira R, Lehenbauer TW, Byrne BA, Li X, Atwill ER, Aly SS
Dairy management practices associated with multi-drug resistant fecal commensals and Salmonella in cull cows: a machine learning approach.

2021
Li X, Atwill ER
Diverse genotypes and species of Cryptosporidium in wild rodent species from the West Coast of USA and implications for raw produce safety and microbial water quality

2020
He Y, Kim K, Kovanda L, Jinno C, Song M, Chase J, Li X, Tan B, Liu Y
Bacillus subtilis: a potential growth promoter in weaned pigs in comparison to carbadox

2020
He Y, Jinno C, Kim K, Wu Z, Tan B, Li X, Whelan R, Liu Y
Dietary Bacillus spp. enhanced growth and disease resistance of weaned pigs by modulating intestinal microbiota and systemic immunity

2020
Li X, Nguyen T, Xiao C, Levy A, Akagi Y, Silkie S, Atwill ER
Prevalence and genotypes of Cryptosporidium in wildlife populations co-located in a protected watershed in the Pacific Northwest, 2013 to 2016.

2020
Li X, Antaki Zukoski EM, Nguyen THB, Hoar BR, Jay Russell MT, Atwill ER
Identifying the shedding patterns of wildlife Escherichia coli O157:H7 in experimentally inoculated neonatal Jersey calves

2020
Adaska JM, Ekong PS, Clothier KA, Williams DR, Rossitto PV, Lehenbauer TW, Atwill ER, Li X, Aly SS
Bayesian estimation of diagnostic accuracy of fecal culture and PCR-based tests for the detection of Salmonella sp. in California cull dairy cattle.

2019
Wei X, Hou S, Pan X, Xu C, Li J, Yu H, Chase J, Atwill ER, Li X, Chen K, Chen S
Microbiological Contamination of Strawberries from U-pick Farms in Guangzhou, China