截至2022年2月21日，全球记录的病例约为4.25亿例. 的 United States had the highest number of 新型冠状病毒肺炎 cases, followed by India and 巴西. 不幸的是，与冠状病毒相关的死亡人数约为5人.9 million, and the U.S. 是 country with the most 新型冠状病毒肺炎 deaths worldwide. In addition to the pandemic’s direct damage, the impact of 新型冠状病毒肺炎 on mental health 由于社交距离和封锁措施而变得相当严重.
的 status of 新型冠状病毒肺炎 vaccination rates
As of February 21, 2022, the number of 新型冠状病毒肺炎 vaccine doses administered worldwide had reached around 10.60亿年. 接种疫苗最多的国家是中国、印度和美国. 然而, when looking at 新型冠状病毒肺炎 vaccination rates worldwide, the leading countries include Cuba and Chile. 尽管美国政府在应对疫情方面一直受到批评, its vaccination rollout has been successful. 在其他地方, number of 新型冠状病毒肺炎 vaccination doses administered in Europe is steadily increasing after a frustratingly slow start. 较富裕的国家被指责获得了超过其公平份额的疫苗, 人们还担心，较贫穷的国家将无法获得所需的供应，以遏制在其境内不断升级的大流行. 这两个 leading 新型冠状病毒肺炎 vaccines by reach are those developed by Pfizer-BioNTech and Oxford-AstraZeneca.的 新型冠状病毒肺炎 situation in the United States
As of February 19, 2022, the number of cases and deaths from 新型冠状病毒肺炎 in the U.S. were around 78 million and 931 thousand, 分别, as reported by the Centers for Disease Control and Prevention. 纽约 was initially hit hardest by the pandemic, but the current situation shows that 加州, 德州, and Florida have the highest number of 新型冠状病毒肺炎 cases by state. 此外, 加州, 纽约, 德克萨斯州报告的死于该疾病的人数最多. 然而，考虑到人口规模，密西西比州和亚利桑那州的人口最多 新型冠状病毒肺炎 death rates by state. Like many other countries, 美国颁布了封锁措施和限制措施以遏制疫情. At the end of March 2020, 据估计，超过90%的人口被要求呆在家里. Many states canceled public events, encouraged social distancing, and closed schools, 餐厅, and other entertainment venues. 然而, with case numbers falling, 各州开始解除封锁限制，重新开放经济, 这导致了 number of new coronavirus cases in the United States rising sharply in late October / early November 2020. Positive infections have fallen since the start of the year, 也许部分原因是免疫接种运动已经看到了非常高的数量 新型冠状病毒肺炎疫苗在美国分发和实施.的 timeline of the coronavirus
Coronavirus disease 2019, or 新型冠状病毒肺炎 for short, 由严重急性呼吸系统综合征冠状病毒2型(SARS-CoV-2)引起. 它是冠状病毒(CoV)大家族的一部分，可从动物传播给人类. Symptoms of 新型冠状病毒肺炎 resemble that of the common cold, with those infected often experiencing fever, 咳嗽, and shortness of breath. 然而, in more severe cases, infection can lead to pneumonia, multi-organ failure, severe acute respiratory syndrome, 甚至死亡. 的 exact source of the virus remains unclear, 但它被认为来自中国武汉的一个海鲜市场. 世界卫生组织(世卫组织)于2021年3月底发布的一份报告是国际公共卫生机构调查病毒起源的第一份报告. 该报告称，该病毒可能在2019年12月被发现之前一两个月就开始传播了. 该报告补充说，最可能的情况是从一种动物传播到另一种动物，然后再传播到人类. 然而, the United States, 以及其他国家，包括英国和韩国, 批评报告被推迟，并表示世卫组织无法获得来自中国的完整或原始数据和样本.
