Density Drives Disease: Urban and Animal Interactions

The rapid spread of viruses in urban areas is exacerbated by both human and animal density. In pandemics like COVID-19 and the original SARS, outbreaks often begin in large cities, where high human populations facilitate transmission. Additionally, crowded animal farms serve as breeding grounds for viruses, increasing the likelihood of inter-animal transmission. The logistics of transporting animals from farms to markets further intensify this risk, concentrating sick animals and establishing a connection between wildlife markets and urban centers. This interconnectedness creates a pathway for viruses to jump from animals to humans, emphasizing the need to address both urban planning and agricultural practices to prevent future pandemics.