{"product_id":"9780132102261","title":"The Coevolution of Humanity and Infectious Disease","description":"\u003cp\u003eThis is the eBook version of the printed book.\u003c\/p\u003e \u003cp\u003eThis Element is an excerpt from \u003ci\u003eGerms, Genes, \u0026amp; Civilization: How Epidemics Shaped Who We Are Today\u003c\/i\u003e (9780137019960) by David P. Clark. Available in print and digital formats.\u003c\/p\u003e¿ \u003cp\u003eFrom hunter-gatherers to agricultural societies and beyond: How humans and disease have evolved together.\u003c\/p\u003e \u003cb\u003e¿\u003c\/b\u003e \u003cp\u003ePatterns of infection vary greatly between hunter-gatherers and settled agricultural societies. Two major factors are intertwined: low population size and high mobility. Ancient hunter-gatherers almost certainly had much less infectious disease than we have today. Before dense human populations grew, most of our epidemic diseases did not exist. Furthermore, small, mobile, relatively isolated tribes would rarely have been infected by contact with others.\u003c\/p\u003e","brand":"Pearson Education","offers":[{"title":"Default Title","offer_id":47071510561008,"sku":"9780132102261","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780132102261_p0.jpg?v=1763640102","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780132102261","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}