Fresenius Medical Care AG & Co. KGaA ("the company" or "Fresenius Medical Care"), the world's largest provider of dialysis products and services, today announced that Standard & Poor's has upgraded the corporate credit rating of Fresenius Medical Care AG & Co. KGaA to 'BB+' from 'BB'. In addition, the agency also raised the ratings of Fresenius Medical Care's various unsecured senior notes to 'BB+' from 'BB'. The agency affirmed the 'BBB-' issue rating on Fresenius Medical Care's senior secured credit facilities. A stable outlook has been assigned to all ratings.