Symptoms of listeriosis

Symptoms of listeriosis in most healthy adults are mild. They usually develop from 3-70 days after the initial infection. Symptomsare similar to Bird flu and gastroenteritis , and include: a high temperature (fever) of 38C (100.4F) or above muscle ache or pain chills feelingor being sick diarrhoea These symptoms usually pass within a few days, even without treatment. Severe listeriosis If the infection spreads into the blood ( septicaemia ) or the central nervous system (invasive listeriosis), the symptoms of fever, muscle pain and chills tend to besevere. If the infection spreads to the nervous system and the brain, additional symptoms can include: severe headache stiff neck changes in mental state, such as confusion seizures (fits) lack of physical co-ordination uncontrollable shaking or twitching ( tremor ) If listeriosis spreads to the brain, it can cause meningitis . Listeriosis in infants Symptoms of listeriosis in infants can include: lack of interest in feeding irritability seizures breathing difficulties, such as rapid breathing or grunting when breathing skin rash a higher or lower temperature than normal The normal body temperature for a baby is around 37C (98.6F).Read about high temperatures in children . When to seek medical help You should seek immediate medical help if: you show signs of severe listeriosis your child shows signs of listeriosis you're pregnant with a fever and chills If you need help outside normal surgery hours,contact your local out-of-hours service .