比如毒品的泛滥，Wikipedia上已经有这个词条：OpioidEpidemicintheUnitedStates.Theopioidepidemic(akaopioidcrisis)referstotheextensiveoveruseofopioiddrugs,bothfrommedicalprescriptionsandfromillegalsources.TheepidemicbeganslowlyintheUnitedStates,beginninginthelate1990s,andledtoanenormousincreaseinopioiduseinrecentyears,contributingtoover70,000drugoverdosedeathsintheU.S.in2018.Netflix上的脱口秀节目PatriotAct最新一季有一集专门讲的是Fentanyl的问题。