flu is one to seven days. If you just traveled to Mexico and you 're home and feeling well you should get on with your daily life and not worry about it, Evans said. 14. Can the swine flu virus live on inanimate objects ? If someone with swine flu touches a doorknob, then I touch it, could I get swine flu ? Flu viruses can live on inanimate surfaces. So theoretically, you could get swine flu from touching a doorknob that was just touched by an infected person. However, that's pretty unlikely, according to Dr. Arthur Reingold, head of epidemiology in the School of Public Health at the University of California, Berkeley. I personally would not have a major fear of environmental contamination, he said. Virtually all influenza is transmitted from sneezing and coughing. Schaffner agrees, adding that flu viruses do n't survive in large numbers on surfaces. A doorknob is n't a warm, nourishing environment for a virus, he said. 15. What should I do if I develop symptoms of swine flu ? Call your doctor -- do n't just drive on over, Schaffner advised. Follow the instructions of your doctor. He might not want you in the waiting room spreading germs to others, he said. CNN Medical Producer John Bonifield contributed to this report.