Foodborne infections during pregnancy

Area of Science:

• Immunology
• Maternal-Fetal Medicine
• Infectious Diseases

Background:

• Pregnancy alters immune function, specifically down-regulating cell-mediated immunity due to increased progesterone.
• Cell-mediated immunity is vital for controlling intracellular pathogens, which pose a significant risk during pregnancy.
• Foodborne illnesses during pregnancy endanger both the mother and the developing fetus.

Purpose of the Study:

• To highlight the heightened susceptibility of pregnant women to foodborne intracellular pathogens.
• To identify key foodborne pathogens that pose a risk to the maternal-fetal unit.
• To emphasize the importance of food hygiene in preventing pregnancy-related foodborne illnesses.

Main Methods:

• Review of immunological changes during pregnancy.
• Identification of intracellular pathogens with predilection for the maternal-fetal unit.
• Analysis of foodborne pathogens significant in the United States during pregnancy.

Main Results:

• Pregnancy-induced immunosuppression increases vulnerability to intracellular pathogens.
• Hepatitis E virus, Coxiella burnetii, Listeria monocytogenes, and Toxoplasma gondii are identified as significant intracellular pathogens.
• Listeria monocytogenes and Toxoplasma gondii are the most critical foodborne threats in the US, potentially causing fetal death or severe neonatal disease.

Conclusions:

• Pregnant women require enhanced vigilance against foodborne pathogens due to immune system changes.
• Strict adherence to food hygiene and personal cleanliness is paramount for preventing severe maternal and fetal outcomes.
• Understanding the risks associated with specific intracellular pathogens informs preventative strategies.