A more effective way of warding off infection after having been sneezed at or shaken hands with someone who is already ill is simply to wash your hands and face thoroughly, said the expert.

• 专家说，如果有人对你打喷嚏，或是一个重病的人跟你握手，预防感染比较有效的方法就是彻底洗净你的手及脸。