Zika virus disease is mainly spread by mosquitoes. For most people it is a very mild infection and isn’t harmful.
However, it may be more serious for pregnant women, as it’s been linked to birth defects – specifically, abnormally small heads (microcephaly). Zika does not naturally occur in the UK. Zika outbreaks have been reported in the Pacific region, and the virus has now spread to South and Central America and the Caribbean.