Members of the England squad have shared pictures of themselves from their childhood as part of Unicef's Children in Danger appeal.
The England Footballers Foundation is working with the charity to raise funds to help prevent the diseases which kill an estimated 17,000 children under five years old each day.
Captain Wayne Rooney was among those sharing a photo from his younger days, and he said at the launch of the campaign: "When I was very little I was quite shy but I remember wanting to be a singer. I'd never have imagined being able to achieve the things I've done, representing England and even captaining my country.
"Due to disease, millions of children aren't even able to reach their fifth birthday which is absolutely shocking. All the lads are really proud to be supporting Unicef's Children in Danger campaign, to help keep more children safe from disease."
Chelsea defender Gary Cahill added: "That so many children are being denied this chance and are dying from diseases that are so easily prevented is heart-breaking, but it's something we can change. We're calling on the public to join our team and help beat disease."
The EFF tweeted a video compilation of the images shared by the England squad: