Counts of COVID-19 reported in SWEDEN: 2019-2021

Project Tycho datasets contain case counts for reported disease conditions for countries around the world. The Project Tycho data curation team extracts these case counts from various reputable sources, typically from national or international health authorities, such as the US Centers for Disease Control or the World Health Organization. These original data sources include both open- and restricted-access sources. For restricted-access sources, the Project Tycho team has obtained permission for redistribution from data contributors. All datasets contain case count data that are identical to counts published in the original source and no counts have been modified in any way by the Project Tycho team, except for aggregation of individual case count data into daily counts when that was the best data available for a disease and location. The Project Tycho team has pre-processed datasets by adding new variables, such as standard disease and location identifiers, that improve data interpretability. We also formatted the data into a standard data format. All geographic locations at the country and admin1 level have been represented at the same geographic level as in the data source, provided an ISO code or codes could be identified, unless the data source specifies that the location is listed at an inaccurate geographical level. For more information about decisions made by the curation team, recommended data processing steps, and the data sources used, please see the README that is included in the dataset download ZIP file.

Project Tycho数据集包含全球各国报告的疾病病例计数。Project Tycho数据整理团队从各类权威来源提取这些病例计数，通常来自国家或国际卫生机构，例如美国疾病控制中心或世界卫生组织。这些原始数据源包括开放获取和受限获取两类来源。对于受限获取来源，Project Tycho团队已从数据贡献者处获得再分发许可。所有数据集包含的病例计数数据与原始来源发布的计数完全一致，Project Tycho团队未对任何计数进行修改，除非在特定疾病和地区的最佳可用数据为个体病例计数时，将其聚合为每日计数。Project Tycho团队通过添加新变量（如标准疾病和地区标识符）对数据集进行了预处理，以提升数据的可解释性。我们还将数据格式化为标准数据格式。所有国家和一级行政区域（admin1 level）的地理位置均以数据源中的相同地理层级呈现，前提是可识别ISO代码，除非数据源明确指出该位置的地理层级标注不准确。有关整理团队所做决策、推荐的数据处理步骤以及所用数据源的更多信息，请参阅数据集下载ZIP文件中包含的README文件。