She is a carrier, but the real source was the gloves she used in the surgery.
Added:
The promo for next week's Grey's Anatomy, "Do You Believe in Magic."
Added:
Richard tells Bailey to cooperate on Grey's Anatomy.
Added:
Meredith asks Cristina for help on Grey's Anatomy. Yang is less than receptive.
Added:
Are the doctors throwing Bailey under the bus on Grey's Anatomy?
Added:
Alex gets really jealous of Jo's boyfriend in this clip from Grey's Anatomy.
Added:
The promo for Grey's Anatomy's next episode, "Sleeping Monster." The episode airs April 25, 2013.
Added:
Owen and Cristina in "She's Killing Me."
Added:

Grey's Anatomy Quotes

[narrating] "At some point, you have to make a decision. Boundaries don't keep other people out, they fence you in. Life is messy, that's how we're made. So you can waste your life drawing lines or you can live your life crossing them. But there are some lines that are way too dangerous to cross. Here's what I know. If you're willing to throw caution to the wind and take a chance, the view from the other side... is spectacular."

MEREDITH

Richard: Chin up. Put your shoulders back, walk proud, strut a little. Don't lick your wounds: celebrate them. The scars you bear are the signs of a competitor. You're in a lion fight, Stevens. Just because you didn't win doesn't mean you don't know how to roar.