Food Safety
search
cart
facebook twitter linkedin
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Food Safety
  • NEWS
    • Latest News
    • White Papers
  • PRODUCTS
  • TOPICS
    • Contamination Control
    • Food Types
    • Management
    • Process Control
    • Regulatory
    • Sanitation
    • Supply Chain
    • Testing and Analysis
  • PODCAST
  • EXCLUSIVES
    • Food Safety Five Newsreel
    • eBooks
    • FSM Distinguished Service Award
    • Interactive Product Spotlights
    • Videos
  • BUYER'S GUIDE
  • MORE
    • ENEWSLETTER >
      • Archive Issues
      • Subscribe to eNews
    • Store
    • Sponsor Insights
  • WEBINARS
  • FOOD SAFETY SUMMIT
  • EMAG
    • eMagazine
    • Archive Issues
    • Editorial Advisory Board
    • Contact
    • Advertise
  • SIGN UP!
Home » Authors » Stelios Viazis Ph.D.

Articles by Stelios Viazis Ph.D.

ice cream with berries

Outbreaks of Foodborne Illnesses and Recalls Associated With Ice Cream and Frozen Dessert Products

Reports in the literature indicate that ice cream has been associated with illnesses linked to numerous pathogens, including Listeria, which can cause severe illness
Brett Weed M.P.H., M.S. Karunya Manikonda M.P.H. Allison Wellman M.P.H. Greg Gharst Ph.D. Matthew Doyle D.V.M., M.P.H. Amanda Conrad M.P.H. Alexandra Palacios M.P.H. Melanie LaGrossa M.P.H. Stelios Viazis Ph.D.
July 1, 2024

Ice cream has historically been associated with human cases of infection by various foodborne pathogens. Pathogen introduction into ice cream can occur at various points throughout the production process for a range of reasons, which can be addressed through proper food safety controls. 


Read More
workers in an office

The Evolution of FDA CORE: Adaptive Response to Outbreak-Related Challenges

Since the CORE Network was established in 2011, its dedicated staff has worked to adapt to an ever-changing foodborne illness outbreak investigation landscape
Stelios Viazis Ph.D. Christina K. Carstens Ph.D., M.S. Lindsay Walerstein, M.P.H. Marie Armstrong M.P.H. Angela Fields M.P.H. Tyann Blessington Ph.D., M.S., M.P.H. Cerisé Hardy M.P.H. Sharon Seelman M.S., M.B.A. Brett Weed M.P.H., M.S.
February 13, 2024

The primary role of FDA's Coordinated Outbreak Response and Evaluation (CORE) Network is to conduct outbreak surveillance, manage the response efforts, and initiate post-outbreak activities for incidents involving FDA-regulated products. This article explores the evolution, work, and perpetual improvement of the CORE Network.


Read More
cashew milk

A Review of Outbreak Investigations of Salmonella Infections Associated with Cashews and Cashew-Containing Food Products in the U.S.

Salmonella spp. have long been associated with low-moisture foods such as nuts and nut-derived products
Margaret Kirchner Ph.D. Gordon R. Davidson Ph.D. Julia Mangia M.P.H. Spencer Carran Ph.D. Andrea J. Krause Ph.D. Karunya Manikonda M.P.H. Zachary D. McCormic M.P.H. Laura Gieraltowski Ph.D. Katherine E. Marshall M.P.H. Stelios Viazis Ph.D.
August 8, 2023

Salmonella spp. have long been associated with low-moisture foods such as nuts and nut-derived products, with varying prevalence observed in tree nuts, including cashews, at retail. Virtually all cashews are imported to the U.S. Some nuts, including cashews, are imported as a "raw" product (i.e., one that has not been subjected to a process to adequately reduce pathogens, such as a kill step). Salmonella contamination of such products has resulted in several notable outbreaks in the U.S. in the past ten years, including those in which cashew-containing products have been implicated as a vehicle. This article presents a brief overview of outbreak investigations of Salmonella infections linked to the consumption of cashews and cashew-containing food products. It also presents challenges encountered, lessons learned, and relevant regulatory requirements for importers and manufacturers of cashews and cashew-containing products.


Read More
Soft Queso Fresco Type Cheese

Recent Outbreaks of Listeriosis Linked to Fresh, Soft Queso Fresco-Type Cheeses in the U.S.

Since 2000, outbreaks have been attributed to fresh, soft Queso Fresco-type cheeses made from pasteurized milk, which have been contaminated by L. monocytogenes after pasteurization
Evelyn Pereira M.P.H. Cerisé Hardy M.P.H. Melinda Hayman Ph.D. Amanda Conrad M.P.H. Alexandra Palacios M.P.H. Stelios Viazis Ph.D.
February 6, 2023

This article presents the key findings of outbreak investigations from 2014–2021 that have been linked to the consumption of fresh, soft queso fresco-type cheeses in the U.S. The authors outline some of the specific circumstances that small manufacturers of all cheeses may encounter in an effort to provide lessons learned and highlight available resources.


Read More
lab workers

The Incident Command System and Foodborne Illness Outbreak Investigations

The Coordinated Outbreak Response and Evaluation (CORE) Network is the coordination focal point for all FDA resources during outbreak investigations
Stelios Viazis Ph.D. Sharon Seelman M.S., M.B.A. Kari Irvin M.S. Julia Mangia M.P.H.
October 11, 2022

During foodborne illness outbreak investigations, public health and regulatory authorities collect three types of data to determine a common food consumed by ill people: epidemiologic, traceback, and laboratory. State and local partners work with FDA to conduct traceback investigations and examine the food supply chain to determine the origin of the foods identified by the epidemiologic investigations. This article looks at the benefits of using incident command system (ICS) principles during emergency response coordination activities for foodborne illness outbreaks, with input from members of the FDA's CORE Network.


Read More
Outbreak Investigations of Cyclospora cayetanensis Infections

Outbreak Investigations of Cyclospora cayetanensis Infections 2013–2020: Progress Made and Challenges Remaining

Recurring outbreaks of cyclosporiasis underscore the need for a comprehensive understanding of how Cyclospora cayetanensis contaminates water and produce
Stelios Viazis Ph.D. Fazila Shakir M.H.S. Anne Straily D.V.M. Adrienne Goodrich-Doctor Ph.D. Jeffery L. Sumter Dr.P.H. Socrates Trujillo Ph.D.
April 20, 2022

FDA Coordinated Outbreak Response and Evaluation Network (CORE), in collaboration with the U.S. Centers for Disease Control and Prevention (CDC), and state and local public health and regulatory partners, conduct foodborne illness outbreak investigations, including those related to Cyclospora cayetanensis infections. In this article, the authors review the successes and challenges of identifying and responding to outbreaks caused by C. cayetanensis infections since 2013, the progress made, the challenges remaining, and what the future holds.


Read More
sprouts

An Overview of Historic Foodborne Illness Outbreak Investigations Linked to the Consumption of Sprouts: 2012–2020

Sprout production is inherently conducive to the survival and growth of pathogens
Michael C. Bazaco Ph.D. Stelios Viazis Ph.D. Donald C Obenhuber Ph.D. Patricia Homola Ph.D Fazila Shakir M.H.S. Angela Fields M.P.H.
June 17, 2021
This article outlines the identification of and responses to these outbreaks, the actions taken to prevent future outbreaks, the challenges encountered, possible contamination routes, and how current regulations may affect sprout safety.
Read More
pathogen image

Regulatory Report: Outbreak Investigations of Foodborne Illnesses Linked to Atypical Food-Pathogen Pairs

Lessons learned help drive future response and prevention efforts
Stelios Viazis Ph.D. Michael C. Bazaco Ph.D. Douglas Karas M.A.
January 14, 2021

After a foodborne outbreak is identified, specific food vehicles may become the focus of an investigation based on the pathogen implicated and past outbreaks linked to the pathogen. 


Read More
Manage My Account
  • eMagazine Subscription
  • Subscribe to eNewsletter
  • Manage My Preferences
  • Website Registration
  • Subscription Customer Service

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the Food Safety Magazine audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of Food Safety Magazine or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • Two men standing in a produce storage facility having a discussion.
    Sponsored byOrkin Commercial

    Staying Compliant With FSMA

  • Deli Salads
    Sponsored byCorbion

    How Food Safety is Becoming the Ultimate Differentiator in Refrigerated and Prepared Foods

Popular Stories

Corporate manager talking with factory employees

Turning Resistance into Opportunity: Motivating Change in the Food Industry

Mindy Brashears

Trump Nominates Mindy Brashears to Second Term as USDA’s Under Secretary for Food Safety

Bowl of colorful breakfast cereal

General Mills Plans to Remove Certified Colors from All U.S. Cereals and K-12 Foods by Summer 2026

Events

June 26, 2025

How to Design and Conduct Challenge Studies for Safer Products and Longer Shelf Life

Live: June 26, 2025 at 2:00 pm EDT: During this webinar, attendees will learn how to conduct challenge studies for microbial spoilage and pathogen growth, including the common challenges encountered, laboratory selection, and use of predictive models.

July 15, 2025

Hygienic Design Risk Management: Industry Challenges and EHEDG Guidance

Live: July 15, 2025 at 11:00 am EDT: From this webinar, attendees will learn the importance of hygienic design to ensure food safety and sanitation effectiveness.

May 11, 2026

The Food Safety Summit

Stay informed on the latest food safety trends, innovations, emerging challenges, and expert analysis. Leave the Summit with actionable insights ready to drive measurable improvements in your organization. Do not miss this opportunity to learn from experts about contamination control, food safety culture, regulations, sanitation, supply chain traceability, and so much more.

View All

Products

Global Food Safety Microbial Interventions and Molecular Advancements

Global Food Safety Microbial Interventions and Molecular Advancements

See More Products
Environmental Monitoring Excellence eBook

Never miss the latest news and trends driving the food safety industry

eNewsletter | Website | eMagazine

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Store
    • Want More
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletter
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Instagram
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing