Just five states have accounted for about 43% of new coronavirus cases over the last week, according to data from Johns Hopkins University.
New York, Michigan, Florida, Pennsylvania and New Jersey had more than 196,400 of the country’s 453,360 cases reported in the last week, according to data available Wednesday morning.
Those states are home to just 22% of the US population, according to estimates from the US Census Bureau.
Case rates have risen especially in Michigan lately, averaging more than 6,600 cases a day over a week now against 1,350 daily cases five weeks ago. And elected officials and health experts have said highly contagious variants such as B.1.1.7 have helped spur increases there and in other parts of the country.
B.1.1.7, first identified in the UK, is now the most common strain of coronavirus in the United States, Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Wednesday.
“Based on our most recent estimates from CDC surveillance, the B.1.1.7 variant is now the most common lineage circulating in the United States,” Walensky said at the White House Covid-19 response team briefing.
With more-transmissible variants adding up, surges like Michigan’s may soon be seen more widely, even though vaccination rates have increased nationally, epidemiologist Dr. Michael Osterholm said.
I wish we had another three or four months before this B.1.1.7 variant surge started to occur,” Osterholm, director for the Center for Infectious Disease Research and Policy at the University of Minnesota, said Tuesday.
The country’s daily rate of new coronavirus cases rose over most of the last four weeks. Part of that is due to the spread of B.1.1.7 and other concerning variants, Walensky said earlier this week.
The US has averaged more than 64,760 new coronavirus cases a day over the past week — slightly lower than the week prior, but still about 21% higher than two weeks ago, and more than 12% higher than four weeks ago, according to Johns Hopkins.
The surge of variants in some states like Michigan should make the federal government think about shifting how it allocates vaccines, Dr. Ashish Jha, dean of the Brown School of Public Health, told CNN on Wednesday.
“In some states … case numbers are actually declining — California is one of them. Other states like Michigan, they’re actually doing a perfectly good job on vaccinations, but they have a huge surge,” Jha said.
“So the federal strategy has to be to shift more vaccines to places like Michigan that are surging so they can use more vaccinations to stop that surge and save lives,” he said.
The CDC says more than 16,200 cases of the B.1.1.7 variant have been confirmed in surveillance testing in the US, and B.1.1.7 has been found in every state. This number does not represent the total number of such cases circulating in the United States, but rather only those found by analyzing samples.
CDC director: Decreasing number of daily deaths may be ‘an impact of vaccination’
While cases have been recently rising or plateauing, the number of daily Covid-19 deaths has been dropping.
The US has averaged 774 Covid-19 deaths a day over the last week — down 22% from the average the week prior, according to Johns Hopkins data.
It’s down even further from the first day of March, when the average was about 2,000 deaths a day.
At Wednesday’s briefing, Walensky attributed these dropping numbers to vaccinations.
“I’m really encouraged about these decreased numbers of deaths that I believe to be an impact of vaccination, especially the vaccination of our elderly communities,” Walensky said.
But, she added, current case counts are “way too high to be thinking that we’ve won this race.
According to the latest CDC data, 19.4% of the total US population was fully vaccinated as of Wednesday morning; and 57.4% of people age 65 and older are fully vaccinated.