The number of travel-related cases of chikungunya, a mosquito-borne viral infection, has nearly tripled in England during the first six months of the year compared to the same period last year.

Chikungunya is a virus spread by mosquito bites, the symptoms of which include a sudden fever and joint pain

More than 70 cases of the chikungunya virus were reported in the UK in the first six months of this year.