![Illustration - bird's eye view of an urban street and two people talking about the global scale of contagion.](/sites/default/files/styles/thumbnail/public/contagious-cities-dale-crosby-close-1600x578.jpg?itok=TEVAHS07)
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Dale Crosby-Close. Wellcome CC-BY-NC
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contagious-cities-dale-crosby-close-1600x578.jpg
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![Illustration - bird's eye view of an urban street and two people talking about the global scale of contagion.](/sites/default/files/contagious-cities-dale-crosby-close-1600x578.jpg)
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