Fitch Ratings last week upgraded Aurora Health Care Inc. to A from A-minus in recognition of its strong credit profile and establishment as a fully integrated health care delivery system.

The action impacts about $510 million of debt sold through the Wisconsin Health and Educational Facilities Authority. Portions of the bonds carry insurance from MBIA Insurance Corp., which has lost its triple-A status, and Financial Security Assurance, which is under review by one rating agency for a possible downgrade.

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