The first signs of a post-Thanksgiving surge in coronavirus cases are beginning to show up in data released by states across the country in a troubling prelude of what may become the deadliest month of the pandemic so far.

Those hints of an uptick in case counts come as the country faces an already substantial wave of infections that began in the Upper Midwest and spread to every corner of the map as summer turned to fall and the weather cooled.

The United States has averaged nearly 200,000 new confirmed cases a day over the last week, according to The Covid Tracking Project, run by a group of independent researchers. More than 2,200 people a day have died on an average during that period. The number of patients being treated in hospitals has crested 102,000, the highest levels of the pandemic.