British pop rock band Duran Duran has cancelled two dates at Casino Rama in Orillia, Ont., because keyboard player Nick Rhodes is too sick to perform.

The band previously called off four dates in its U.S. tour after Rhodes was advised to rest by doctors because of a viral infection.

The two Canadian dates were scheduled for Friday and Saturday and fell at the end of a two-year tour in support of their album All You Need is Now.

The band, which played a Hyde Park concert as part of the Olympic opening ceremonies in London, expressed disappointment at the cancellations on their website and apologized to fans.

"Nick held out all week, hoping that he would be well enough to perform again for these final few shows, but unfortunately the medical advice he has been given today requires him to continue to rest," read a posting on Wednesday.

Rhodes was an original member of the five-man group when it first was established in 1978. The band had a huge following in the 1980s with hits such as Hungry Like a Wolf and Is There Something I Should Know.

They were forced to postpone concerts in Britain last summer after singer Simon Le Bon was treated for throat problems.

Ticketholders for the Ontario concerts can apply to the venue for a refund.