When you ride the subway you share bacteria with everyone in your city - A study of the Hong Kong subway system has found that each line has its own microbial community, but that commuters mix bacteria across the whole network every day.

When you ride the subway you share bacteria with everyone in your city - A study of the Hong Kong subway system has found that each line has its own microbial community, but that commuters mix bacteria across the whole network every day.: https://ift.tt/2AspSAg Read more... https://ift.tt/2vscp5p