Why are states seeing a sudden increase in coronavirus cases? Experts have more than one answer – USA TODAY

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New York and Chicago, whichsaw a surge of coronavirus cases at the start of the pandemic, are experiencing a decline in cases and have begun reopening in phases.

But that trend doesn't holdthroughout the rest of the country.

Soaring case numbers in Arizona have diverted lawmakers' attention from protestsafter the death of George Floydback to the public health crisis.

Senate Minority Leader Chuck Schumer, D-N.Y., has asked for members of the administration's Coronavirus Task Force, specifically naming Anthony Fauci andDeborah Birx,to conduct a briefing for Democratic senatorsnext week on the spike in cases in Arizona and elsewhere across the U.S., according to his office.

Other states seeing a sudden spike in COVID-19 cases includeSouth Carolina, Florida, Alaska, Arkansas, California, Kentucky, New Mexico, North Carolina, Mississippi, Oregon, Tennessee, Texas, Utah and Puerto Rico.

Though experts aren't exactly sure why these states are experiencing an unexpected uptick in cases, they said lifting lockdown restrictions, isolated outbreaksand the virus catching up to communities previously not impacted may each play a role.

This virus is much more spotty, said Arnold Monto, professor of epidemiology at the University of Michigan School for Public Health. It is so complicated that when people give you a simple answer to this, its probably not right.

In April, the Trump administration announced guidelines to reopen the country, which included a 14-day decline of confirmed coronavirus cases or a decline of positive tests as a percent of total tests within that period.

However, some states eager to get back to work didnt meet those federal governmentguidelines before reopening.

Floridas first phase began May 18, which reopened restaurants, retail and museums at half capacity. Not only did the state fail to meet a two week decline in cases, but it actually reported an increase in cases per day a week before reopening. According to Johns Hopkins data, Florida reported 594 cases on May 10. Five days later there were more than 800 cases.

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About three weeks later, on June 5,Gov.Ron DeSantiswent on to phase two reopening, even as daily cases have topped the 1,000 mark and have continued to do so for the past seven days.

A record 1,698 cases of COVID-19 were announced Thursday morning by the FloridaDepartment of Health, marking the largest single-day increase in the state since the pandemic began.

In Tennessee, Gov. Bill Lee said Wednesdaythat state's recent uptick in coronavirus infections and hospitalizationswas an expected result of the state reopening much ofits economy and urged residents to redouble precautions to prevent the virus from continuing to spread.

Georgia is notably not on the list of states where cases are on the rise, said Dr. Jeffrey Shaman, professor of environmental health at Columbia Universitys Mailman School of Public Health. Gov.Brian Kemp was heavily criticized when the Peach State became one of the first states to begin reopening in April.

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In the six weeks since Georgia loosened restrictions, its curve has stayed relatively flat. Shaman said this could be due to resident behavior, suggesting peoplecontinued to shelter in place despite the lifting of lockdowns.

It's hard to know for sure because there's no real data on how many businesses truly reopened or what percentage of people actually wear masks, he said.

However, Georgia Public Health reported the results of 7,684 tests Tuesday, of which 9.8%were positive, nearly double the rate from the previous day, according to an analysis by the August Chronicle.

We dont want to be totally caught up in a numbers game, Monto said. What we need to look at is patterns.

Both Monto and Shaman say another reason some states may be experiencing unexpected spikes is because of super spreaders, events or enclosed community outbreaks.

A super spreader is an infected person who can transmit the disease to a large number of people.

Weve got a lot of anecdotes and its hard to define who a super spreader is,you only know after the fact, he said.

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Other states say theirspike is due to a local outbreak in a confined space such as anursing home, prisonor meatpacking plant.

The Texas Department of State Health Services attributes the state'sspike in coronavirus casesto increased testing in prisons.

According to the Texas Tribune, the number of prisoners reported to be infected with the virus jumped from about 2,500 to 6,900 in the two weeks since prisons started reporting test results May 26. Overall cases jumped by 34% from May 25 to June 7, and nearly a quarter of the increase came from 10 counties with prisons and meatpacking plants.

You have clusters, you have nursing homes, meat packing and they add a lot of cases, Monto said. So that has to be factored in as well.

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The number of coronavirus cases tied to meatpacking plants has more than doubled since President Donald Trump invoked the Defense Production Act in late April to compel slaughterhouses and processing plants to stay open.

The Midwest Center for Investigative Reporting found more than 20,400 infections across 216 plants in 33 states.

Across the United States, some of the highest spikes in coronavirus cases recently occurred in counties with one or more meatpacking plants Buena Vista County, Iowa; Beadle County, South Dakota; Yell County, Arkansas; and Titus County, Texas, for example. All saw their case counts more than double in the past two weeks, a USA TODAY data analysis found.

Not much is known about the viruss seasonality as it has only been presentfor the past six months. But if its anything like the flu, Monto says, it could come in waves.

I think catching up is a phenomenon, he said. If you miss the first wave, you catch up in the second wave.

With the flu, theres a lull in the summer, Monto says. States that arent impacted in the spring by the seasonal virus usually see a spike in flu infections in a second wave.

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However, there is no data to support this hypothesis with the coronavirus. In fact, seasonality doesnt seem to be a factor, as hotsouthern states like Arizona and New Mexicoare now experiencing a spike in cases.

In Greenville County, South Carolina, the percentage of positive cases recently tripled from 2.9% on May 27 to 9.4% on June 3, prompting state health officials to classify it acoronavirus hot spot,according to The Greenville News.

Shaman said a spike in cases could be due to lack of social distancing, face mask wearing and other non-pharmaceutical prevention methods touted by public health experts for the last six months.

Protesters march during a rally at Cesar Chavez Park on Wednesday, June 3, 2020, in Laveen, Ariz., protesting the death of George Floyd, who died May 25 after being restrained by Minneapolis police.(Photo: Ross D. Franklin, AP)

If you look at the protests you can see the difference between communities, Shaman said. In New York, everyone is wearing a face mask and others arent.

While an increase in cases may be caused for multiple reasons, Monto said states should take heed and take preventative measures to prevent a major outbreak.

The take home message to me is that the virus is still around. Its everywhere, its not going to go away, he said. We cant be complacent.

Contributing: Brett Kelman, USA TODAYNetwork

Follow Adrianna Rodriguez on Twitter: @AdriannaUSAT.

Health and patient safety coverage at USA TODAY is made possible in part by a grant from the Masimo Foundation for Ethics, Innovation and Competition in Healthcare. The Masimo Foundation does not provide editorial input.

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Why are states seeing a sudden increase in coronavirus cases? Experts have more than one answer - USA TODAY