In a significant twist that could reshape our understanding of the early days of the coronavirus pandemic, death records now indicate the first COVID-related deaths in California and across the country occurred in January 2020, weeks earlier than originally thought and before officials knew the virus was circulating here.

A half dozen death certificates from that month in six different states — California, Alabama, Georgia, Kansas, Oklahoma and Wisconsin — have been quietly amended to list COVID-19 as a contributing factor, suggesting the virus’s deadly path quickly reached far beyond coastal regions that were the country’s early known hotspots.

Up until now, the Feb. 6, 2020, death of San Jose’s Patricia Dowd had been considered the country’s first coronavirus fatality, although where and how she was infected remains unknown.