Of all the public transit etiquette violations out there, the sneeze-and-touch at the height of cold and flu season is among the worst. Everyone who rides in a city has seen it: that sickly looking person across the train or bus who sneezes into a free hand then grabs the pole we all share. Researchers have tracked this to the spread of tuberculosis and acute respiratory infection, so it isn't germaphobia talking. It's science.
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