SAN FRANCISCO (S&P Global Ratings) Feb. 3, 2021--S&P Global Ratings revised its outlook to negative from stable and affirmed its 'AAA' long-term rating and underlying rating (SPUR) on San Francisco's previously issued general obligation (GO) bonds and its 'AA+' long-term rating and SPUR on the city and county's previously issued appropriation obligations. At the same time, S&P Global Ratings assigned its 'AAA' long-term rating, with a negative outlook, to the city and county's $254.6 million series 2021A GO bonds (social bonds--affordable housing election of 2019) and $66.9 million series 2021B-1 bonds and $14.7 million series 2021B-2 bonds (both for earthquake safety and emergency response, election of 2020). Last, S&P Global Ratings affirmed its 'AAA/A-1+' joint support rating on the city