Coronation street - have these 2 left for good?

[DistinguishedSocialCommentator]

Hi
Tracey Barlows - has she left for good or taking a break? If shes left, why what next

The builders wife, the builder/gamblers wife, sorry her name escapes me ie the nurse - has she left and if so why

Thanks

Anyone? Thanks in advance

I think Aggie the nurse has definitely left, and the actress playing Tracey has some health issues, but I think she may return.