Bram Sable-Smith / KBIA

By the time Alicia Curran’s son was a year old, she says she noticed a few things different about him. 

"Year two, we noticed a few more things," Curran recalls. "By three, there was no denying that autism was what he had."

Back in 2003, when her son was diagnosed, she says there weren’t a lot of answers for parents of children with autism. All that ambiguity was tough for a "mom with a lot of questions." 

Scientists cleaning out an old laboratory on the National Institutes of Health campus in Bethesda, Md., last week came across a startling discovery: vials labeled "variola" — in other words, smallpox.

Under international convention, there are supposed to be only two stashes of this deadly virus: one at the federal Centers for Disease Control and Prevention in Atlanta, and another at a similar facility in Russia.

The CDC swooped in to collect the vials and carted them off to a secure lab at its Atlanta headquarters.