Covid-19 hospitalizations among younger people are rising in the US -- especially in one region - CNN

Cyrus Shahpar, the Covid-19 data director at the White House, wrote on Twitter.

While Covid-19 vaccination numbers climb across the country, Covid-19 cases and hospitalizations are also on the rise, fueled by the B.1.1.7 variant, which is now the dominant strain in the US.

Rochelle Walensky said during a White House Covid-19 briefing Friday.

And the trends are "magnified" in one part of the country, she said: the Upper Midwest.

"CDC is working closely with public health officials in this region to understand what is driving these cases and how we can intervene."

'A life and death race'

Michigan is currently among the hardest-hit states in the country and local officials say the state is in the middle of another surge, reporting thousands of new cases daily.

The state also has the second-highest number of reported cases of the B.1.1.7 variant after Florida, according to CDC data.

Minnesota health officials warned Friday the state was seeing a "sharp increase" in Covid-19 cases, adding it is "more important than ever" to keep practicing safety measures like wearing a mask and social distancing.

Mike DeWine said Thursday the number of Covid-19 cases, hospitalizations and ICU admissions are all rising.

Vivek Murthy said Friday in the White House briefing.