Prognosis

Gastroenteritis is generally self-limited.

Each syndrome related to listeriosis has its own prognosis and is determined by the immunologic status and concurrent health problems of the individual.[1][31][29][21]​​

In one national observational cohort study, the strongest mortality predictors for both bacteraemia and neurolisteriosis were ongoing cancer, multi-organ failure, aggravation of any pre-existing organ dysfunction, and monocytopenia.[56] Meningoencephalitis was the most prevalent CNS manifestation, occuring in 84% of patients. Brainstem involvement was reported in 17% of patients with CNS involvement.[56] In the same study, only 5% of pregnant women experienced an uneventful outcome. Almost a quarter of women experienced fetal loss.[56]

Seventy-five percent of neonates born to mothers with listeriosis are complicated with clinical neonatal Listeria infection.[1][2]

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