Boar’s Head, Listeria, and Pregnancy

On July 26, 2024, Boar’s Head issued its recall of 7 million pounds of ready-to-eat meat and poultry products that might be contaminated with the potential harmful bacteria, listeria. Sporadic listeria outbreaks are nothing new; in June 2024, chicken-based products were recalled for the same concern in Canada. The US recall includes more than 70 products — including liverwurst, ham, beef salami and bologna. Listeriosis is reportable to the local health department of the county in which the patient resides. Listeria can be very serious for 3 groups of people: pregnant women, people older than 65, and people with weakened immune systems. Pregnant women are about 13 times more likely than the general population to get listeriosis. Maternal infection may manifest as a nonspecific, flu-like illness with fever but can result in severe fetal and neonatal infection, leading to fetal loss, preterm labor, neonatal sepsis, meningitis, and death. Yep, we’ve been here before. There have been episodic outbreaks of listeria monocytogenes in the past. In 2014, the ACOG released its medical guidelines for the management of presumptive exposure to listeria monocytogenes (reaffirmed in 2023). In this episode, due to the recent outbreak and listeria concerns, we will review the pathophysiology, diagnosis, and therapy of L. Monocytogenes in pregnancy.   

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