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West Virginia Gov. Jim Justice, right, and West Virginia Secondary School Activities Commission Executive Director Bernie Dolan address a news conference on March 12, 2020, about the coronavirus. (AP) West Virginia Gov. Jim Justice, right, and West Virginia Secondary School Activities Commission Executive Director Bernie Dolan address a news conference on March 12, 2020, about the coronavirus. (AP)

West Virginia Gov. Jim Justice, right, and West Virginia Secondary School Activities Commission Executive Director Bernie Dolan address a news conference on March 12, 2020, about the coronavirus. (AP)

By Patrick Orsagos July 27, 2020

Fact-checking the WV Democratic Party’s tweet on COVID-19 transmission

If Your Time is short

  • On the day the tweet was posted, West Virginia did have the highest rate of transmission of coronavirus, according to a WVU scientist. 

  • However, using this metric communicates only one part of the picture about how hard West Virginia is getting hit by the coronavirus. 

  • Among other measurements, the absolute number of coronavirus cases ranks far below the level seen in current hot-spot states like Arizona, Florida, and Texas. And the state’s positivity rate for test results is close to the low level that experts like to see.

In a thread of tweets posted July 10, the West Virginia Democratic Party blames Republican Gov. Jim Justice for the state’s jump in the rate of person-to-person transmission of the novel coronavirus. 

"Under the leadership of @WVGovernor Justice, West Virginia now has the highest rate of COVID-19 spread from person to person than any other state," the tweet begins.

The thread pointed to an announcement by Clay Marsh, the vice president and executive dean of West Virginia University Health Sciences, that the state was ranked No. 1 nationally in the rate of transmission.

"Today Dr. Clay Marsh announced that WV has the highest RT rate of any other state in the U.S.," the thread says. "This means that WV is spreading COVID-19 from person to person faster than any other state in the country." Bureau of Public Health commissioner Cathy Slemp, who resigned under pressure in late June, "tried to warn Justice of this days before she was fired."

 

Does West Virginia, the last state in the country to confirm a positive COVID-19 case, now top the country in the rate of transmission? It does, though the tweet lacks important context about the spread of the virus in the state and the country as a whole.  

Ranking states by Rt

The West Virginia Democratic Party did not respond to inquiries for this article, but we did reach Marsh to discuss the relationship between the rate of transmission and the growth in coronavirus cases.

He said scientists use two related but distinct measurements to study the spread infections such as COVID-19. One is R0, pronounced "R-naught," and the other is known as Rt, or the effective reproduction number. Both measure how many people, on average, one infected person will infect. But they measure slightly different things.

R0 captures how fundamentally infectious a germ is when it’s introduced into a new population. By contrast, Rt measures how much the infection is spreading at a particular moment in time, taking into account factors such as the percentage of people who have already become infected and the preventive measures being taken against the infection.

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"With both of these scores, any rate that is more than 1 suggests that the disease is spreading, and any rate below 1 suggests that it is reducing," Marsh told PolitiFact. 

On July 10, the day the Democratic Party’s tweet was posted, Marsh told WVMetroNews that the state’s Rt had increased from the nation’s second lowest rate two and a half months earlier to second-worst in the country. By that afternoon, CNN had posted an article citing Marsh and reporting that West Virginia had climbed to No. 1 nationally in Rt.

Marsh told PolitiFact that Rt is valuable for showing which direction the state’s level of infections could be heading in the following weeks. But other metrics are important as well, he said.

Marsh said he pays attention to the positivity rate -- the percentage of newly tested people whose results come back positive for the virus. The countries and states that have been most successful have kept this measurement below 3%, and West Virginia has toggled between 3% and 5% recently. (West Virginia is also one of only 11 states that are performing an adequate number of tests to control the spread, according to a New York Times analysis.)

Marsh said he also looks at the total change in the number of cases, using a 7-day or 14-day rolling average, and how close in-state hospitals are to their capacity for the number of ICU beds and ventilators

In other words, Rt gives researchers an idea about how fast the disease is spreading, but it’s not the only key to understanding the virus. Andy Shi and Xihong Lin from the Harvard Chan School of Public Health agree with Marsh’s assessment in an email interview with PolitiFact.

"Ultimately, what we are doing is we are trying to take a look at, ‘how do we measure today versus how did we measure a week ago, or two weeks ago, or a month ago,’ because that gives us a better idea about how our risk is changing," Marsh said. 

Our ruling

The West Virginia Democratic Party tweeted, "Under the leadership of @WVGovernor Justice, West Virginia now has the highest rate of COVID-19 spread from person to person than any other state."

On the day the tweet was posted, West Virginia did have one of the highest rates of transmission of any state. However, using this metric communicates only one part of the picture of how hard West Virginia is getting hit by the coronavirus. 

Among other measurements, the absolute number of coronavirus cases ranks far below the level seen in current hot-spot states like Arizona, Florida, and Texas. And the state’s positivity rate for test results is close to the low level that experts like to see.

We rate this statement Half True.

Our Sources

Twitter, WV Democratic Party, posted July 10, 2020 

Charleston Gazette Mail, Dr. Slemp ousted as state health officer following Justice rant, June 24, 2020 

Time, West Virginia Just Became the Last State to Report a Covid-19 Case. It Was Only a Matter of Time, March 17, 2020 

Dr. Clay Marsh, phone interview, July 17, 2020

Twitter, WVMetroNews, posted July 10, 2020 

CNN, West Virginia has highest rate of Covid-19 in the country, state official said, July 10, 2020 

Johns Hopkins University & Medicine, America is Reopening. But have we flattened the curve?, accessed July 16, 2020 

New York Times, Is Your State Doing Enough Testing?, accessed July 16, 2020 

Andy Shi and Xihong Lin, email interview, July 23, 2020

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More by Patrick Orsagos

Fact-checking the WV Democratic Party’s tweet on COVID-19 transmission

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