May 1 – A study conducted by health services company Cigna reveals that American adults are experiencing a "loneliness epidemic" with nearly half of Americans reporting they sometimes or always feel alone (46 percent) or left out (47 percent).
医疗服务公司信诺集团（英语：Cigna）发表研究结果，透露美国成年人正在经历“孤独流行病”，近半数美国人表示他们时常或老师感到孤独（46%）或被遗忘（47%）。