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Table 1.

Summary of reported cases of Listeria monocytogenes brain abscesses (1968–2023).

High-risk patients Mortality rate Positive blood cultures Positive CSF§ or abscess cultures Monotherapy Combination therapy Adjuvant surgical therapy
76/96 (79%) 22/96 (22.9%) 57/72 (79.2%) 41/75 (54.6%) 28/89 (31.5%) 61/89 (68.5%) 8/91* (8.8%)

At least one risk factor present, such as extremes of age and impaired immunity.

§

Cerebrospinal fluid.

*

One patient who underwent surgery died.