MY WIFE RECEIVED E.I. SICKNESS/ILLNESS FOR 15 WEEKS BUT WE DID NOT RECEIVED ANY FORM FROM SERVICE CANADA FOR OUR TAX. IS THIS NOT INCLUDED IN OUR TAXT CLAIM REPORT?

Your wife should have received a T4E slip for her E.I. Benefits received, regardless if they were regular benefits or for sickness.

To obtain a copy of the slip, you can log in to your "CRA My Account" (if signed up) and access the info there. Or contact Service Canada - 1 800 206-7218, or sign in to your "My Service Canada Account".