The participating towns in this effort included Grafton, Holden, Leicester, Millbury, Shrewsbury, West Boylston, and the City of Worcester. This file is no longer updated and is categorized as a legacy dataset.Serology vs Antibody testing: Serology testing looks for the presence of COVID-19 antibodies in the bloodstream which means the person has been exposed to the virus about 2 weeks or more before the test.Date fields: Date fields are displayed in the table with data type string. The string data type is typically used to represent text. All date information is accurate but will sort as text in the online table. Use the download feature if you would like to sort by date.Informing Worcester is the City of Worcester's open data portal where interested parties can obtain public information at no cost.