What condition is Listeria NOT commonly associated with?

Listeria monocytogenes is a bacterium that can cause severe infections, particularly in pregnant women, leading to adverse pregnancy outcomes. The conditions often associated with Listeria infections include neurological complications, sepsis, and gastrointestinal distress.

Hydrops, also known as hydrops fetalis, refers to an abnormal accumulation of fluid in the fetus, typically associated with other infections or genetic disorders, but Listeria is not a common cause of this condition. The bacterium is more known for causing severe illnesses like sepsis in the mother, which can subsequently impact the fetus, and neurological complications, such as meningitis or encephalitis, especially within the newborn if the mother is infected during pregnancy. Gastrointestinal distress can occur as part of the illness due to the Listeria infection, reflecting the bacterium's primary portal of entry.

Thus, among the listed conditions, hydrops is not typically linked to Listeria infections, distinguishing it from the other options that are recognized complications of this pathogen.