BRIEF-S&P affirms Petrobras 'B+' ratings; outlook negative
July 28 (Reuters) - S&P Global Ratings:
* Petrobras 'B+' ratings affirmed and stand-alone credit profile still at 'B-' on contigent risks, outlook negative
* Outlook mirrors the one on Brazil, reflecting opinion of very high likelihood of government support to co in order to avoid default on debt Source text (bit.ly/2a2C2SJ) Further company coverage:
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