Ryker suffered severe burns on June 21 after a bottle of hand sanitizer exploded during a s'mores activity at the Jasmine Moran Children's Museum in Seminole, 60 miles from Oklahoma City.
Next to the Reinland Mennonite Church on the outskirts of Seminole in Texas is a plain grass field surrounded by a chain-link fence that serves as the devout congregation's graveyard.
Seminole, West Texas, is at the center of what is threatening to become America's largest measles outbreak in a quarter-of-a-century. There's little sign the disease is slowing down.
In the dusty outskirts of Seminole, Texas - just past the cotton fields and under the relentless spring sun - Peter Hildebrand stands outside a gas station, his eyes rimmed red and voice cracking.