教你五招彻底预防甲型H1N1流感病毒_小升初阅读

教你五招彻底预防甲型H1N1流感病毒

　　　　4. Cover your nose and mouth

　　　　When someone sneezes or coughs, liquid droplets packing flu viruses can travel as far as three feet (one meter) through the air and descend on your nose or mouth, so it\'s best to maintain at least an arm\'s-length distance when talking to someone who shows signs of infection, says Louise Dembry, director of epidemiology at YaleNew Haven Hospital in Connecticut. And to protect others, cover your mouth and nose with a tissue when you cough or sneeze, and clean your hands afterward, she says, noting that viruses can remain infectious for hours, if not longer, when they linger on the skin or other surfaces such as keyboards and subway poles。

　　　　5. Consider buying a mask in case you need it in the future

　　　　From press photos, it seems that Mexico\'s entire population has donned surgical masks, but the verdict is still out on how effective they are in stemming the spread of flu, according to Aiello. Some research suggests that maskseither the surgical variety or respirators called N95\'s specially designed to filter out water droplets containing virusesreduce the risk of contracting the flu or other respiratory pathogens by as much as 80 percent, but research by Aiello\'s team suggests that masks do little unless used in conjunction with diligent hand washing。

　　　　According to the U.S. Centers for Disease Control and Prevention, there is extremely limited data on the effectiveness of face masks and respirators for blocking flu spread in communities. The agency suggests, however, that people consider using them when it\'s impossible to avoid crowded settings or close contact with others in areas where swine flu transmission has been confirmed: face masks for crowded places and respirators for situations that involve close contact with people who have respiratory infections (caring for a sick family member, for example)。