CDC/Dr. Fred Murphy / Wikipedia

Scientists at UNC Chapel Hill have discovered a new virus that's a distant relative of SARS. They published their findings in the journal Nature Medicine this week.

Pigs just before auction, hogs,
Chris Cioffi

North Carolina's pig industry is under assault. A new virus, that just arrived in America last spring is spreading through the pork population, causing as much as 2% of the herd to die. What's most alarming is how fast Porcine epidemic diarrhea, or PED, takes hold.

"I mean you can go in and see a house that looks completely normal, running around, feeding everything. You can come back this afternoon and half the pigs are dead," said Dr. Tom Ray of the state veterinary office.