A clade of Listeria monocytogenes serotype 4b variant strains linked to recent listeriosis outbreaks associated with produce from a defined geographic region in the US

• Laurel S. Burall ,

  * E-mail: Laurel.Burall@fda.hhs.gov (LSB); Atin.Datta@fda.hhs.gov (ARD)

  Affiliation Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America

  http://orcid.org/0000-0002-8117-6264

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• Christopher J. Grim,

  Affiliation Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America

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• Atin R. Datta

  * E-mail: Laurel.Burall@fda.hhs.gov (LSB); Atin.Datta@fda.hhs.gov (ARD)

  Affiliation Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America

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