Rep. Joe Wilson made his first appearance since his release from the hospital after a mysterious illness. 

The congressman posted a video on his blog saying that he's feeling better and is looking forward to his appearance at the Chapin Labor Day festival and the district bus tour that was rescheduled for late September.

Wilson was hospitalized last week for an extended fever. After a four-day stay at Lexington Medical Center, he was released on Saturday.  

"Due to a viral infection that I received about three weeks ago, I've been going through tests," Wilson said. "All the tests have come back negative." 

Doctors are not sure how Wilson was infected, according to a release from his office. 

"Many thanks to everyone for your kind thoughts throughout the past couple weeks," Wilson wrote on his blog.