What can be done to prevent someone from getting sars?

Avoid endemic areas. Avoiding areas where there is an outbreak is the best way... But if you can't (i.e. You are a healthcare worker or are in the military), wearing an n95 mask when you are in the presence of people who may be ill + total contact precautions is recommended. (respiratory droplet and contact precautions). The cdc has a webpage: http://www. Cdc. Gov/ncidod/sars/ with more detail.
There is no SARS. Sars virus is not registered anymore in the world. If you would like to have a prevention from current flu epidemic, it would be enough of getting flu- vaccine, avoid contacts with contagious person, wear mask, wash your hands.