People at Risk
In the United States, an estimated  1,600 persons become seriously ill with listeriosis each year. Of these, 260  die.
Who Gets Listeriosis?
The following groups are at increased  risk:
- Pregnant  women: Pregnant women are about 20 times more likely than other healthy adults  to get listeriosis. About one in six (17%) cases of listeriosis occurs during  pregnancy.
- Newborn babies: Newborn babies suffer the most serious effects of infection in pregnancy. 
- Persons  with weakened immune systems from transplants or certain diseases, therapies,  or medications.
- Persons  with cancer, diabetes, alcoholism, liver or kidney disease.
- Persons  with AIDS: They are almost 300 times more likely to get listeriosis than people  with normal immune systems.
- Older  adults
- Healthy  children and adults occasionally get infected with Listeria, but they rarely  become seriously ill.