A White House nurse prepares to administer the H1N1 vaccine to President Barack Obama at the White House on Sunday, Dec. 20, 2009. (Official White House photo by Pete Souza) (public domain).
The photo is from the official White House Flickr channel which provides an unprecedented access to photos of the President and his staff - all of them free for use and in the public domain.
Check some of the comments under the photo:
"OK you are going to feel a little pinchReferences:
This is the best-dressed nurse I've ever seen.
This is a Wonderful Capture and hopefully it will prod everyone in getting a H1N1 vaccine shot!
From the thumbnail I thought it was Obama getting a tattoo
The President has not been lifting weights. His arms are almost as bad as mine.
The White House's photostream
The Presidents Club | Photos: Oval Office Secrets from Truman to Obama | TIME, 2012.