Risk factorsBy Mayo Clinic staff
Pregnant women and people who have weak immune systems are at highest risk of contracting a listeria infection.
Pregnant women and their babies
Pregnant women are significantly more susceptible to listeria infections than are other healthy adults. Although a listeria infection may cause only a mild illness in the mother, consequences for the baby may include:
- Premature birth
- A potentially fatal infection after birth
People who have weak immune systems
This category includes people who:
- Are over 60
- Have AIDS
- Are undergoing chemotherapy
- Have diabetes or kidney disease
- Take high-dose prednisone or certain rheumatoid arthritis drugs
- Take medications to block rejection of a transplanted organ
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