MONTERREY, Mexico--(BUSINESS WIRE)--Fitch Ratings has affirmed Reaseguradora Patria S.A.'s (Patria) International Insurer Financial Strength rating (IFS) at 'A-' and its National Scale IFS rating at 'AAA(mex)'. The Rating Outlook is Stable. KEY RATING DRIVERS The ratings are based on balance sheet, operating performance and other key quantitative strengths which Patria historically has performed better than its peers. Fitch positively views qualitative factors, such as corporate governance and