article_snippet: In an estimated one per cent of cases, though, serious complications can develop such as pneumonia, meningitis, encephalitis (inflammation of the brain), inflammation of the heart and toxic shock, a type of blood poisoning - all usually down to impaired immunity.
article_snippet: Doctors advise parents to contact a GP straight away if your child develops any abnormal symptoms, such as: .
article_snippet: However, in an estimated one per cent of cases, serious complications can develop such as pneumonia, meningitis, encephalitis (inflammation of the brain), inflammation of the heart and toxic shock, a type of blood poisoning - all usually down to impaired immunity.
article_snippet: Experts have calculated that complications may result in 6,700 children's hospital admissions a year in the UK.