Imagine that you're a judge, and you're asked to decide the case brought by Mary and Dave Wildman.
Back in 1997, Mary took the couple's 1-year-old son, Nicholas, to the doctor for the combination vaccine against measles, mumps and rubella. Right after the MMR shot, Mary says, Nicholas started crying uncontrollably.
"This was unbelievable screaming," she says.
Mary and her mom started driving Nicholas back to their home in Evans City, Pa.