S&P Global Ratings has assigned its 'AA' long-term rating to Rochester, Minn.'s $200 million series 2018 health care facilities revenue bonds issued for the Mayo Clinic. S&P Global Ratings also affirmed its outstanding 'AA' long-term ratings on debt issued for Mayo Clinic directly and through various issuers. We also affirmed our 'AA/A-1+' and 'AA/A-1' dual ratings on various debt issued for, or guaranteed by, the Mayo Clinic, as well as our 'A-1+' rating on Mayo Clinic's commercial paper (CP) program and various bonds that are in CP mode. The outlook on all ratings is stable where applicable. The 'A-1+' and 'A-1' short-term components of the affirmed ratings reflect the short-term ratings on the various standby bond purchase agreement (SBPA) providers,