欧美巨鞭大战丰满少妇,77777亚洲午夜久久多人,日本乱偷互换人妻中文字幕,欧洲美女黑人粗性暴交视频

Unseen Enemy is an essential exploration of reasons 21st-century populations are experiencing a rash of diseases that were once only outbreaks, but have now become full-blown epidemics. This increased risk that we face, and the ways society and individuals can work together to reduce that risk, are explained to the public through the case studies of three epidemics: Ebola, influenza and Zika. Moving across the globe, we meet doctors, disease detectives and everyday people who have stepped into the horror of an epidemic and emerged deeply changed. Epidemics bring out the best and worst of human behavior, with effects reaching far beyond the tolls of sickness and death.