Any updates on Claudio's health/voice?

Forgive me if I missed this somewhere, but I'm wondering if anyone knows how he is doing? We're seeing them Saturday in Chicago (14th show!) and heard about him not being able to sing in DC. I know that was a week or so ago, but it sounded pretty serious, unsure the recovery time. Just trying to set expectations if we can expect the real deal or Coheed karaoke (honestly down with either!)