Using whole genome sequencing (WGS), U.S. federal and state public health officials recently solved a multistate foodborne illness outbreak investigation that has been ongoing since 2014, with the most recent illnesses being reported in December 2023.

The U.S. Food and Drug Administration (FDA) will release a new prevention strategy aimed at reducing foodborne listeriosis cases and outbreaks associated with the consumption of fresh, soft Queso Fresco-type (QFT) cheeses.

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.