MONTERREY, Mexico--(BUSINESS WIRE)--Fitch Ratings has affirmed the following ratings of Grupo Famsa, S.A.B. de C.V. (FAMSA): --Foreign currency Issuer Default Rating (IDR) at 'B+'; --Local currency IDR at 'B+'; --Long-term national scale rating at 'BBB(mex)'; --Short-term national scale rating at 'F3(mex)'; --USD250 million senior unsecured notes due in 2020 at 'B+/RR4'; --MXN1 billion Certificados Bursatiles issuance due 2016 at 'BBB(mex)'; --MXN1 billion short-term Certificados Bursatiles pro