Yes, you can get a staph infection from food when an infected person -- especially someone with an open wound or skin infection on their hand-- prepares it. Foods at highest risk include sandwiches, salads (including egg, tuna, chicken, potato, and macaroni), cream-filled pastries, and puddings. Symptoms come on quickly, in as little as 30 minutes, and include vomiting, cramps, and diarrhea. They come on so quickly because they're caused by a pre-formed toxin rather than the bacteria, which also is why the condition is not contagious. The illness usually runs its course in one to three days.
Safety: Wash hands thoroughly before handling food. Do not handle food if you are sick or have a nose or eye infection, an open wound, or infection on your hands or wrists.