Assessing the Association Between Social Gatherings and COVID-19 Risk Using Birthdays

This cross-sectional study uses administrative health care data on 2.9 million households from the first 45 weeks of 2020 to assess the association between social gatherings and SARS-CoV-2 transmission by studying whether COVID-19 rates increase after birthdays in a household.
Source: JAMA Internal Medicine - Category: Internal Medicine Source Type: research