Antibiotics have not proven to be effective. Treatment of SARS so far has been largely supportive with anti-pyretics, supplemental oxygen and ventilatory support as needed.
Source: http://en.wikipedia.org/wiki/SARS
I thought it's a virus that causes SARS? How come antibiotics are used? Been taught that antibiotics don't work on viruses, but used to prevent bacterial infection should the bacteria "sneak" in when the immune system is weakened.