article_snippet: Most strains are harmless but some can cause serious illness.
article_snippet: Source: NHS Choices .
article_snippet: Dr Robert Laing, consultant physician in Infectious Diseases and Internal Medicine at Aberdeen Royal Infirmary and co-author of the journal article, said: 'Dr
article_snippet: Scotland has a particularly high incidence of the strain, with more than twice as many cases than other parts of the UK.