Its symptoms include a severe headache, painful joints and fitting. Other symptoms include:
- Sudden onset of a high fever
- Dislike of bright lights (photophobia)
- Painful joints and vomiting
More top news
Gareth Southgate has become the first major injury casualty of England's World Cup campaign after dislocating his shoulder on Wednesday.
The country’s justice minister said the legislation was ‘transformative’.
William Wark was going so fast police in North Yorkshire abandoned their pursuit.