What Happens If You Get Listeria When Pregnant?

by | Last updated on January 24, 2024

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During the first trimester of pregnancy, listeriosis

may cause miscarriage

. As the pregnancy progresses to third trimester, the mother is more at risk. Listeriosis can also lead to premature labor, the delivery of a low-birth-weight infant, or infant death.

How quickly can Listeria affect a fetus?


Early onset listeriosis develops 1-2 days after birth

, and the baby often has signs of a serious bacterial infection. Late onset listeriosis occurs 1-2 weeks after birth, and usually includes symptoms of meningitis ( a condition where there are areas of swelling around the brain and spinal cord in the baby).

How do you know if you have Listeria when pregnant?

Symptoms of listeriosis may show up 2-30 days after exposure. Symptoms in pregnant women include

mild flu-like symptoms, headaches, muscle aches, fever, nausea, and vomiting

. If the infection spreads to the nervous system it can cause a stiff neck, disorientation, or convulsions.

How common is miscarriage from Listeria?

For their study, the team obtained a strain of Listeria known to have caused miscarriage, stillbirth, and premature delivery in

at least 11 pregnant women in 2000

.

What are the first signs of listeria?

  • Headache.
  • Stiff neck.
  • Confusion or changes in alertness.
  • Loss of balance.
  • Convulsions.

Can you test for Listeria while pregnant?

A doctor will suspect listeriosis if you are pregnant and have a fever or flu-like symptoms. Listeria is difficult to diagnose. Your doctor will try to confirm a diagnosis by

performing a blood culture to test

for presence of the bacteria.

What are the odds of getting Listeria while pregnant?

Pregnant women are about 10 times more likely to get listeriosis than other healthy adults. An

estimated 1/6 of all Listeria cases occur

in pregnant women.

Has anyone had Listeria while pregnant?

Fortunately, the illness is

rare

: The Centers for Disease Control and Prevention (CDC) estimates that about 1,600 people contract listeriosis in the United States every year. About a sixth of reported cases occur in pregnant women.

What if I ate deli meat while pregnant?

Listeria is killed by pasteurization and cooking. Cold cuts are now sprayed with a food additive that helps prevent Listeria before packaging. You don'

t

need to panic if you are pregnant and have been eating deli meats. The probabilities are in your favor that nothing has happened.

Should I worry about Listeria while pregnant?

Listeriosis can make people feel sick, but rarely causes severe health problems. What's scary for moms-to-be, however, is that having it during pregnancy increases the risk of miscarriage, stillbirth and preterm birth. Babies of moms who had listeriosis

during pregnancy are also at risk for listeria infection

.

How often does Listeria cause stillbirth?

The rate of stillbirths is

3-5 per 1000 births

in high-income countries, where maternal or fetal infection accounts for 10-25% of them. Usually, maternal infections lead to stillbirth when they occur during the second and early third trimester of gestation. The most frequent microorganisms are summarized in Table 1.

How likely is it to get listeria?

Listeriosis is a serious infection usually caused by eating food contaminated with the bacterium Listeria monocytogenes.

An estimated 1,600 people get listeriosis each year

, and about 260 die.

How soon do you see symptoms of Listeria?

People with invasive listeriosis usually report symptoms starting

1 to 4 weeks after eating food contaminated

with Listeria; some people have reported symptoms starting as late as 70 days after exposure or as early as the same day of exposure.

How do you check for Listeria?


A blood test

is often the most effective way to determine whether you have a listeria infection. In some cases, samples of urine or spinal fluid will be tested as well.

How do I know if I have Listeria poisoning?

What are the symptoms of listeriosis? Listeriosis can cause mild, flu-like symptoms such as fever, chills, muscle aches, and diarrhea or upset stomach. You also may have

a stiff neck, headache, confusion, or loss of balance

. Symptoms may appear as late as 2 months after you have eaten something with Listeria.

How do you get rid of Listeria?

COOKED MEAT – Listeria

is killed by cooking

. Thoroughly cooking product to 165oF/74oC will kill the bacteria. Consumers at high risk for (e.g. pregnant women and the elderly) should reheat deli meats immediately before consumption. FREEZING – Listeria is not killed by freezing.

Diane Mitchell
Author
Diane Mitchell
Diane Mitchell is an animal lover and trainer with over 15 years of experience working with a variety of animals, including dogs, cats, birds, and horses. She has worked with leading animal welfare organizations. Diane is passionate about promoting responsible pet ownership and educating pet owners on the best practices for training and caring for their furry friends.