12 states reported record coronavirus case counts this weekend. This could be the beginning of the second wave.

12 states reported record coronavirus case counts this weekend. This could be the beginning of the second wave. Coronavirus experts have long warned of a fall resurgence. Dr. Anthony Fauci has advised Americans to "hunker down" for fall and winter. YahooNews

• The coronavirus outbreak appears to be getting worse across much of the US.

• Twelve states — Alaska, Colorado, Indiana, Kansas, Minnesota, Missouri, Montana, North Dakota, Nebraska, Oregon, South Dakota, and Utah — recorded more new infections in the last seven days than they ever have in a one-week period.

• This could be the "dreaded second wave," emergency-room physician Megan Ranney told CNN.

• Dr. Anthony Fauci has advised Americans to "hunker down" for fall and winter.

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Across the US, coronavirus outbreaks across seem to be larger than ever before.

On Saturday, 12 states hit record seven-day rolling average case counts, according to a Business Insider analysis of data from The COVID Tracking Project, which compiles data from state and territory-level public health authorities.

Alaska, Colorado, Indiana, Kansas, Minnesota, Missouri, Montana, North Dakota, Nebraska, Oregon, South Dakota, and Utah recorded more new infections in the last seven days than they ever have in a one-week period.

The US overall has recorded more than 50,000 new cases each day for the last four days. The country hasn't seen such a streak since mid-August.

Case counts are high — with a seven-day daily average of at least 15 new cases per 100,000 people — in 26 states, according to analysis from The New York Times. Daily case counts are growing in another 16 states and Washington, DC.  ...