Shaun Weatherby, 26, had mumps last year and was unable to eat because of the swelling and pain. "It's definitely an experience I don’t want to have again," he says.
It resets the immune system to a "baby-like state", meaning they're more likely to catch a whole host of dangerous illnesses.
We must learn from other countries and impose childhood vaccination, writes Allianz Care’s Dr Ulrike Sucher.
“Normally this isn’t a problem as the UK used to be measles-free…," said the doctor.
"We need ministers to go after these quacks," says Labour's Lucy Powell in wake of UK losing its 'measles free' status.
The US will lose its measles elimination status if the outbreaks continue, the CDC warns.
"Current vaccination policies are not enough to control rising numbers of cases."
The health minister could make immunisations compulsory.