First U.S.A. death (initially believed to be Feb. 29)

The earliest known U.S. death from COVID-19 occurred on February 6 in Santa Clara County, California, in a 57-year-old woman who died from complications caused by coronavirus which apparently led to a ruptured heart. This case was only confirmed months later, posthumously from tissue samples taken by the county coroner and sent to the CDC for testing, with infection estimated to have occurred several weeks earlier, in what has now been established as already at that early date being untraceable community-based spread, passed between people in the United States.