{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T21:37:06Z","timestamp":1777066626607,"version":"3.51.4"},"reference-count":18,"publisher":"American Society of Tropical Medicine and Hygiene","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,9,6]]},"abstract":"<jats:title>ABSTRACT.<\/jats:title>\n<jats:p><jats:italic>Listeria monocytogenes<\/jats:italic>, a foodborne, facultative, intracellular gram-positive bacillus, is one of 17 species of the <jats:italic>Listeria<\/jats:italic> genus and was responsible for the world\u2019s largest outbreak of listeriosis in 2017\u20132018 in South Africa. <jats:italic>Listeria monocytogenes<\/jats:italic> tends to cause mild gastrointestinal symptoms in healthy individuals. However, pregnancy-associated listeriosis can be fatal to the fetus and can lead to serious adverse effects in the neonate. <jats:italic>Listeria monocytogenes<\/jats:italic> has an affinity for the placenta, as opposed to other nonreproductive organs. Herein, we present a case of placental listeriosis diagnosed in a 33-year-old female, parity 4, with unknown gestational age during the listeriosis outbreak in South Africa in 2017\u20132018. The patient presented with pregnancy-related complications and underwent a caesarean section. Morphological features demonstrated acute suppurative villitis and intervillositis with a heavy load of gram-positive bacilli, which is highly suggestive of placental listeriosis. Multiplex polymerase chain reaction confirmed the presence of <jats:italic>L. monocytogenes<\/jats:italic>.<\/jats:p>","DOI":"10.4269\/ajtmh.23-0029","type":"journal-article","created":{"date-parts":[[2023,7,24]],"date-time":"2023-07-24T16:22:03Z","timestamp":1690215723000},"page":"584-586","source":"Crossref","is-referenced-by-count":7,"title":["Placental Listeriosis: Case Report and Literature Review"],"prefix":"10.4269","volume":"109","author":[{"given":"Marquerit","family":"Van der Merwe","sequence":"first","affiliation":[{"name":"Anatomical Pathology, National Health Laboratory Service, Chris Hani Baragwanath Academic Hospital, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sugeshnee","family":"Pather","sequence":"additional","affiliation":[{"name":"Anatomical Pathology, National Health Laboratory Service, Chris Hani Baragwanath Academic Hospital, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2795","reference":[{"key":"b1","series-title":"Microorganisms","first-page":"1","article-title":"Listeriosis outbreak in South Africa: a comparative analysis with previously reported cases worldwide","volume":"8","author":"Tchatchouang","year":"2020"},{"key":"b2","series-title":"Foodborne Pathog","first-page":"524","article-title":"Outbreak of Listeria monocytogenes in South Africa, 2017\u20132018: laboratory activities and experiences associated with whole-genome sequencing analysis of isolates","volume":"16","author":"Smith","year":"2019"},{"key":"b3","series-title":"BioMed Res Int","first-page":"1","article-title":"What is new in listeriosis?","volume":"2014","author":"Hernandez-Milian","year":"2014"},{"key":"b4","series-title":"Virulence","first-page":"391","article-title":"Maternal-neonatal 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