NHS Below is an extract there is more information through this link.
Listeriosis is an infection that usually develops after eating food that’s been contaminated by bacteria called Listeria monocytogenes, which is commonly known as Listeria.
In most people, listeriosis is mild and causes flu-like symptoms or vomiting and diarrhoea (gastroenteritis). Read more about the symptoms of listeriosis.
Symptoms usually pass within three days without the need for treatment.
However, in rare cases, the infection can spread to other parts of your body and cause serious complications, such as meningitis (infection of the membranes surrounding the brain and spinal cord). Doctors describe this as invasive listeriosis.
If this is the case, you’ll need to be treated with antibiotics in hospital for several weeks.
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