If you develop a listeria infection, you might have:  Fever Chills Muscle aches Nausea Diarrhea  Symptoms might begin a few days after you've eaten contaminated food, but it can take 30 days or more before the first signs and symptoms of infection begin. If the listeria infection spreads to your nervous system, signs and symptoms can include:  Headache Stiff neck Confusion or changes in alertness Loss of balance Convulsions  Symptoms during pregnancy and in newborns During pregnancy, a listeria infection is likely to cause only mild signs and symptoms in the mother. The consequences for the baby, however, can be devastating — the baby can die in the womb or have a life-threatening infection within a few days of being born. Signs and symptoms of a listeria infection in a newborn can be subtle, but can include:  Little interest in feeding Irritability Fever Vomiting Difficulty breathing 
develop listeria infection  have:  fever chills muscle aches nausea diarrhea  symptoms begin days you've eaten contaminated food  can take 30 days first signs symptoms infection begin  listeria infection spreads nervous system  signs symptoms can include:  headache stiff neck confusion changes alertness loss balance convulsions  symptoms pregnancy newborns pregnancy  listeria infection likely cause only mild signs symptoms mother  consequences baby  however  can devastating — baby can die womb life-threatening infection days being born  signs symptoms listeria infection newborn can subtle  can include:  little interest feeding irritability fever vomiting difficulty breathing 
listeria infection