eNewsletter, April-May 2019
May 2017 | WCFS & WIFSS Newsletter
View this email in your browser


We've been hard at work these past few months making food safer and more secure. Please have a look at where we've been. We hope you find it informative. Stop by our websites at either or Thank you for your continued support!

University of California, Davis


Chancellor Gary S. May welcomes Feng Hu, Vice President of Nanjing Agricultural University to UC Davis.  Michael Lairmore, Dean, School of Veterinary Medicine, flanks the Chancellor on the left and Bennie Osburn, Director of Outreach and Training, and Rob Atwill, Director of WIFFS are on the right.

NAU-UC Davis One Health for Food Safety and Animal Health Symposium | May 28 – 30 2019 | University of California, Davis

WIFSS hosted an international symposium involving UC Davis, Nanjing Agricultural University, Massey University, and Wageningen University and Research Center. The symposium, “NAU-UC Davis One Health for Food Safety and Animal Health Symposium,” focused on the pathogenesis, control and prevention of important transboundary diseases. During the 3-day symposium, held on the UC Davis campus, May 28-30, administrators and faculty from the four institutions collaborated on planning for the establishment of a diagnostic laboratory to be located at NAU.  The laboratory will begin to address common food system problems. 

The symposium brought together faculty from multiple disciplines to address emerging diseases such as African Swine Fever.  The emphasis of discussions focused on using a One Health approach for diagnosing the disease through collaborative efforts involving scientists such as pathologists, epidemiologists, virologists, and immunologists.  This team has the capability to track where sick and dying animals are located; determine how best to prevent the spread of the virus; produce vaccines; determine how the virus causes the types of lesions and the pattern of lesions for diagnostic purposes; and evaluate the spread of the virus in the environment. These exercises are key approaches for diagnostic laboratories.

In addition, there was discussion on vector borne diseases and antibiotic resistance, both societal disease issues of which the School of Veterinary Medicine plays an important leadership role.
Katie Lee and Anny Huang presenting their poster at the Sixty-eighth Western Poultry Disease Conference

68th Western Poultry Disease Conference | April 3-6, 2019 | Puerto Vallarta, Jalisco, Mexico

The Sixty-eighth Western Poultry Disease Conference (WPDC) was held in Puerto Vallarta, Jalisco, Mexico, April 3 to 6, 2019. Katie Lee from the WIFSS and Anny Huang from the Veterinary Medicine Extension attended the conference and presented a poster entitled " Prevalence of Salmonella spp., Campylobacter spp., Escherichia coli, and Enterococcus spp. in Retail Poultry Purchased from Greater Los Angeles Area, CA, USA".


Linda J. Harris, Nina Parkinson, Carole Widmayer, Dan Kurzrock, and Ned Spang on a panel at the Aligning the Food System for Food Safety in Food Waste Solutions Workshop

Aligning the Food System for Food Safety in Food Waste Solutions Workshop | May 16 | Davis, CA

Linda J. Harris  presented “Challenges and food safety regulations”, and served as a panel member for the session, “Food Upcycling”, at the Aligning the Food System for Food Safety in Food Waste Solutions Workshop, Davis, CA, on May 16, 2019, which had 60 participants.  The workshop was sponsored by the UC Davis Centers / Departments:  World Food Center, Food Loss and Waste Collaborative, Food Science and Technology, and the Robert Mondavi Institute for Wine and Food ScienceErin L. DiCaprio (WIFSS Advisory Board and WCFS affiliate) served as a co-organizer. 
Linda J. Harris, Don Schaffner, and Kathy Glass at IAFP's 10th Microbial Challenge Testing for Foods Workshop

10th Microbial Challenge Testing for Foods Workshop | May 14-15, 2019 | Chicago, IL

Linda J. Harris joined co-instructors Kathy Glass (University of Wisconsin) and Don Schaffner (Rutgers University) to teach IAFP's 10th Microbial Challenge Testing for Foods Workshop in Chicago, IL May 14-15, 2019. She presented the  topics, “Pathogens of concern” and “Sampling intervals and test conditions".  

IAFP European Symposium on Food Safety | April 24, 2019 | Nantes, France

Linda J. Harris was invited to speak at the at the IAFP European Symposium on Food Safety in Nantes, France. She organized a section titled ”Survival and Control of Foodborne Pathogens in Low-Moisture Foods”, and presented “Survival of Enterohemmorhagic E. coli in Low Moisture Foods”.  
Rob Atwill presenting at the 2019 Livestock Food Safety Workshop

2019 Livestock Food Safety Workshop | April 22, 2019 | Holtville, CA

Rob Atwill and Gabriele Maier (UCD Vet Med Extension), along with Brooke Latack (UCCE Livestock Advisor),  organized a workshop in Imperial Valley on April 22nd for feedlot owners and their managers. The workshop was hosted by the Desert Research and Extension Center (DREC)  Speakers also included Michele Jay-Russell, Paula Rivadeneira (University of Arizona), and KatieRose McCullough (North American Meat Institute).Topics covered included core principles of meat food safety during processing, cow-side interventions to reduce fecal shedding of E. coli O157:H7, and historical and recent scientific findings regarding the interactions between cattle, wildlife, water, and bacterial contamination of raw produce grown in California. This workshop was a good opportunity to also discuss the key findings from FDA regarding their environmental assessment following the 2018 outbreak of E. coli O157:H7 associated with Romaine lettuce from the Yuma growing region, and to explore potential research projects in collaboration with the feedlot industry in this southern region of our state.

Defense Logistic Agency Visit | April 15-16, 2019 | Davis, CA

Linda J. Harris hosted 3 members of DLA during their visit to UC Davis on April 15-16, 2019.  Gloria Edwards, Program Manager, Subsistence Network (SUBNET), John King, Chief Supplier Division, DLA-Troop Support, and Brian Kim, Colonel, U.S. Army, Senior Veterinary Advisor, DLA, presented an overview of their agency, provided information on R&D opportunities within the Subsistence Network, and engaged in small-group research discussions with around 30 members of the Food Science & Technology faculty and students.  

Almond Board Food Safety & Quality Meeting | April 18, 2019 | Modesto, CA

Linda J. Harris  presented "Research Update: Comparison of thermal resistance of Enterococcus faecium NRRL 2354 and Salmonella Enteritidis PT30 on almonds" and "Proposal Survival of inoculated generic Escherichia coli on developing almonds between fruit set and harvest", to the Almond Board Food Safety & Quality Meeting, Modesto, CA, on April 18, 2019.

Global Food Security Course, University of Pennsylvania | April 9, 2019 via Skype

Bennie Osburn was a guest lecturer in the University of Pennsylvania’s Anthropology Course on Global Food Security.  He addressed the crowd of more than 200 students and faculty about veterinary medicine’s role in food safety, emphasizing the benefit of taking a One Health approach to solving the complex problem of thousands of illnesses and deaths caused each year by foodborne diseases. The audience gathered in a Penn Vet classroom to listen to the 50-minute lecture via Skype on April 9. 

The global food security course is an interdisciplinary course organized by the University of Pennsylvania School of Veterinary Medicine and offered through the department of Anthropology. It focuses on the problems of food demand and consumption, production and supply in our increasingly globalized and urbanizing world. Special attention is paid to the intersections of current technologies of food production, current nutritional problems, environmental change and resource degradation, and the changing quality of human social life under globalization.

Technical Subcommittee of the Administrative Committee for Pistachios | April 9, 2019 | Fresno, CA

Linda J. Harris presented “Produce Safety Rule Commercial Processing Exemption” and “Update on Pistachio Research 4-2019” to the Technical Subcommittee of the Administrative Committee for Pistachios, Fresno, CA on April 9, 2019.

Safe Food Alliance Conference | April 3, 2019 | Monterey, CA

Linda J. Harris presented . “Foodborne outbreaks and recalls” and “Food microbiology 101” in a session entitled "Food Safety 101", at the Safe Food Alliance Conference in Monterey, CA on April 3, to 30 food industry attendees.

Thailand Aquaculture Research Visit | April, 2019 | Bangkok, Thailand

Rob Atwill visited Saharuetai Jeamsripong from Chulalongkorn University, Bangkok, Thailand, in early April to discuss new research projects with her graduate students. The focus of this new collaboration is to assist Thailand’s aquaculture industry with reducing bacterial contamination of farmed tilapia in addition to cultured and wild bivalves such as cockles, green mussels, and oysters. Project locations will be throughout a key growing region for these seafood commodities located in the Samut Sakhon coastal areas.
Photo of a dung beetle

April 30, 2019 | Interview in Civil

Michele Jay-Russell was interviewed by Virginia Gewin for an article in Civil Eats entitled, "Dung beetles are key to health pasture. Now they may also help make produce safer".  The article was inspired by a recent publication by then-doctoral student, Matt Jones, published in the Journal of Applied Ecology. 

June 5 - 6, 2019 | Breeding Crops for Enhanced Food Safety (Davis)

Presenting the first workshop of its kind! Attendees will collaborate to identify knowledge gaps and research priorities in this emerging field of breeding for food safety. Sessions will cover themes such as regulatory, industry, and extension perspectives on crop safety; genetic diversity in human pathogen-plant interactions; programs currently breeding for crop safety; and opportunities for breeding strategies for food safety. Breakout sessions will culminate in a whitepaper to guide future research and funding. Audio and presentation slides will be livestreamed during this event. (Deadline to register was June 4th at noon.)

June 11 & June 13, 2019 | California Good Ag Neighbors: The Produce-Livestock Interface Workshop (June 11, Holtville, CA and June 13, Stockton, CA) 

NEW: Press release from CDFA, May 22, 2019 

NEW: Press release from ANR, May 22, 2019

Perhaps no issue in agriculture is as complex as that of the safety of fresh produce grown in the vicinity of
livestock and wildlife. Animal operations and fresh produce growers in California are among the most highly
regulated in the country but confusion often exists about what each community does to help keep our food safe. Join us for one of two workshops where food safety scientists, regulators, produce growers and livestock farmers can share what we already know about the produce safety-livestock interface and how we can leverage existing efforts to make food even safer.  Registration and information page: 

June 11, 18, 25, & July 2, 2019 | Upcoming Webinar Series

Registration will also open soon for a webinar series in “Overlaps in Food Quality Assurance and Food Safety Programs”.  The free webinars will be hosted live each Tuesday on these dates:  June 11, 18, 25, and July 2nd, 2019, from 12:00 noon to 1:00 pm. They will be given by Drs. Erin DiCaprio, Linda Harris, and Luxin Wang. The four webinars include (1) Overview of food quality assurance and food safety programs (June 11), (2) Tools for quality control and control charts (June 18), (3) Microbiological testing and standards (June 25), and (4) Environmental monitoring programs (July 2).  Webinar registration page:

Visit us at the Annual IAFP Meeting | July 21-24, 2019 | Louisville, KY

Several of our faculty and staff will be participating at the upcoming 2019 International Association of Food Protection (IAFP) Annual Meeting. Stop by to see presentations of these collaborative research and outreach programs. Check out the Annual Meeting App or IAFP website for the complete program. 

Click on the titles in each category below to preview a few of the sessions and abstracts:

Round Tables and Symposia Oral Presentations and Posters

Monday, July 22 Tuesday, July 23
Wednesday, July 24
Chase, J.A., M.L. Partyka, R.F. Bond, D. Oryang, E.R. Atwill. 2019. Environmental inactivation and irrigation-mediated regrowth of Escherichia coli O157:H7 on romaine lettuce when inoculated in a fecal slurry matrix. PeerJ 7:e6591 
Li, X., W. Jackson, S. Aly, B.M. Karle, N. Silva-del-Rio1, T. Nguyen, C. Xiao, E.R. Atwill. 2019. A cross-sectional study of prevalence and species of Cryptosporidium in preweaned calves and associated management risk factors on dairies in central California, USA. Journal of Veterinary Medicine and Research 6(1):1171.
Li, X., K.A. Flores, S. Barry, T.A. Becchetti, M. Doran, J.A Finzel, R. Larsen, D. Lile, N. McDougald, T. Nguyen, C. Xiao, E.R. Atwill. 2019. Statewide cross-sectional survey of Cryptosporidium and Giardia in California cow-calf herds. Rangeland Ecology and Management 72(3):461-466.
Lee, K., J. Chase, M. Pitesky, A. Huang, K. Levelle, E.R. Atwill, X. Li. 2019. Prevalence of Salmonella spp., Campylobacter spp., E. coli, and Enterococcus in retail poultry purchased from greater Los Angles, CA. Proceedings of the 68th Western Poultry Disease Conference. Puerto Vallarta, MX. April 3-6. pp 145-149.

Moussavi, M., V. Lieberman, C. Theofel, J. Barouei, and L. J. Harris. 2019. Growth of Salmonella and other foodborne pathogens on inoculated inshell pistachios during simulated delays between hulling and drying. J. Food Prot. 82(5):815-825.

Pereira, R., D.R. Williams, P. Rossitto, J. Adaska, E. Okello, J. Champagne, T.W. Lehenbauer, X. Li, J. Chase, T. Nguyen, A.F.A. Pires, E.R. Atwill, S.S. Aly. 2019. Association between herd management practices and antimicrobial resistance in Salmonella spp. from cull dairy cattle in Central California. PeerJ 7:e6546 
Copyright © 2017 WCFS/WIFSS, All rights reserved.

Want to change how you receive these emails?
You can update your preferences or unsubscribe from this list.

This email was sent to <<Email Address>>
why did I get this?    unsubscribe from this list    update subscription preferences
WCFS/WIFSS · 1477 Drew Ave, Ste 101 · Davis, CA 95618 · USA

Email Marketing Powered by Mailchimp