It's been a bad day for fighter health. Earlier today we learned that Jon Jones was being forced out of the planned bout with Rashad Evans for Jones' light heavyweight title. Now, Vitor Belfort has announced a bit of unfortunate news via Twitter:
I have hepatitis a. This thing hurt so bad I pray that God will take cate of me. Don't forget to pray for me.
I will keep u guys inform how things are going.but now I can promise I will watch every movie and I will twit a bunch . God is heeling me
Guys I just want to let u know that this hepatitis A is easy to treat so don't worry guys in 2 weeks I am back in the gym 08/6 ready to F
Belfort is correct that hepatitis A is fairly treatable. He'll likely be in pain, have some trouble keeping food down and have a bit of a lack of energy, but in a few months your body can kick it with minimal permanent damage. It's much less of a problem than other forms of hepatitis and is highly unlikely to put off his UFC 133 bout with Yoshihiro Akiyama, let alone put his career at risk.
The only other case of Hep A that jumps out at me in a fighter is Rodrigo Valdez. From Valdez's Wikipedia page:
In his next match, held at the Madison Square Garden in New York City, with Bobby Cassidy on August 9, 1971, Valdez won by knockout in round six, because the fight doctor deemed Cassidy not fit to continue from a cut around his eye which had been ruled as produced by a Valdez punch. At the time, nobody knew that Cassidy had hepatitis A. As a consequence of this, Valdez also became affected by the disease. Given a quarantine, he refused to quit boxing periodically and continued training during his time of illness. Separated from most of the world, he was fit enough to win two more fights within three months of his initial diagnosis of hepatitis.
Hopefully Vitor doesn't suffer any complications and is able to get back to the grind with no problem in the near future.