Karev does a patient work up in this photo from the Grey's Anatomy winter premiere. It is titled "Where Do We Go From Here."

Alex looks on in consternation in this Grey's Anatomy scene. It is from the 2015 premiere, "Where Do We Go From Here."

Is it just us or is Alex starting to look a little queasy. Will he be the first doctor to fall due to the flu? We'll have to find out on Grey's Anatomy Season 10 Episode 18.

Alex is having a tough time of it on Grey's Anatomy Season 10. This is a photo from "Throwing It All Away."

Alex and Jo aren't exactly getting along these days. They argue here in another Grey's Anatomy Season 10 scene.

Alex and Jo go at it in this Grey's Anatomy scene. It is from the episode "You've Got To Hide Your Love Away."

Alex is looking a lot happier here than he does in the pictures for the upcoming Grey's Anatomy Season 10 Episode 13 "Take It Back" but with his father in the hospital, happy might be a lot to ask.

Alex sits by his father's bedside as he awaits news on "Take It Back" when Grey's Anatomy returns on Feb. 27th.

Dr. Webber and Dr. Hunt do their best to calm Alex concerning the state of his father.

Alex doesn't look happy with Dr. Hunt's answers when Grey's Anatomy returns on Thursday, Feb. 27th.

Alex is devastated when he finds out about what happened to his father when Grey's Anatomy returns on Thursday, February 27th.

Josephine and Alex share a little romance in the workplace on Grey's Anatomy. "Somebody I Used to Know" is the tenth episode of the show's tenth season.