Food Safety Issues/Listeria


Hello Carol,
  I am currently 25 weeks pregnant and have a question about listeria. The other day I ordered a ham/beef pizza from Pizza Hut for dinner. Didn't finish the whole thing, so I put the remaining slices in the fridge. A couple of days later I pulled out the slices for lunch, and without thinking about it I ate them cold. My concern is the cold ham that was on the pizza. I know it is  pre cooked ham and then cooked on the pizza, but  still concerned about listeria because it was cold when I ate it.
        Thank You,

Hi Alicia,

The ham used on the pizza was a cooked product and as long as you consumed the pizza within 7 days of initial purchase there should not be an issue with Listeria.

Fortunately, most manufacturers of deli meats in the US have a very strict Listeria detection protocol which tests their products for any sign of this bacteria.  Products are tested and are not released to the public if any sign of Listeria is present.  This is why the recalls for deli meats and hot dogs has declined because products with any sign of Listeria never make it into the supply chain.  However, it is still recommended that pregnant women should only consume deli meats and hot dogs that have been heated since this bacteria can be killed by heat.

Congratulations on your pregnancy and I hope everything progresses smoothly.

Happy New Year.


Food Safety Issues

All Answers

Answers by Expert:

Ask Experts


Carol Schlitt


I can answer questions on home food safety, sanitation and home food preservation.


I am a former Extension educator, nutrition, wellness and food safety, having retired August 1, 2010. I am a food safety instructor for the Illinois Department of Public Health, a ServSafe Instructor/Proctor and have my own company, Safe & Savory Solutions, Inc -

National Extension Association of Family and Consumer Sciences (Past President and current Historian), St. Louis Culinary Society.

BS - University of Illinois MS - Southern Illinois University at Edwardsville

©2017 All rights reserved.