According to the R.E.M. website the Sheffield show of their current tour will be postponed until June 15th. The Glasgow show was cancelled and is awaiting re-scheduling.
According to R.E.M.'s manager Bertis Downs, "Mike has been receiving medical care in Sheffield and is resting. As to how this affects the shows scheduled for the remainder of the week and beyond, the band is taking it day-to-day based on the advice of Mike's doctors."
The official website will post tomorrow whether the Birmingham show is affected.