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Swine flu has yet to escalate into a global pandemic, but here\'s what to do if it does 猪流感还没有升级为全球性的大规模流行病，但是如果真的发生了这种情况，你应该按照如下5种方法来做。 5 Ways to Protect Yourself (and Others) from Swine Flu Experts say that the steps you should take to shield yourself from swine flu are not much different than those you might take to ward off seasonal flu。 1. Don\'t touch your face Above all, keep your hands away from your eyes, mouth and nose, all of which serve as pathways for the virus to enter your respiratory tract, says Allison Aiello, an epidemiologist at the University of Michigan School of Public Health in Ann Arbor。 2. Wash your hands If you must touch your face, scrub your hands, getting under the fingernails and inside all crevices, for 20 to 30 seconds with hot soap and water beforehand, Aiello says. In addition to dislodging dirt that may contain virus particles, soaps contain surfactants [the primary components of detergents] which can damage the lipid [fat] protecting virus particles, she explains. Soap should therefore be effective against all flu viruses。 3. Use a hand sanitizer No sink nearby? Then use an alcohol-based hand sanitizer, Aiello advises. About a quarter-size spot, rubbed all over the hands until the sanitizer evaporates (usually 10 to 15 seconds)， should do it. Alcohol can inactivate viruses by destroying the structure of their proteins, she notes。 | 
