It is very rare for immunocompetent individuals to develop symptoms of the disease.
The following symptoms and complaints may then indicate listeriosis:
- Uncharacteristic febrile reaction (fever > 38.1 °C).
- Diarrhea (diarrhea) or other gastrointestinal disturbances (in pregnant women).
The following symptoms may occur in immunocompromised individuals:
- Fever
- Disturbance of consciousness
- Cephalgia (headache)
- Skin lesions – after contact with infected animals or contaminated soil.
- Back pain
- Myalgia (muscle pain)
- Neurological deficits such as paralysis or sensory disturbances, ataxia (gait unsteadiness) [neuroinvasive listeriosis].
- Nausea (nausea), vomiting.
