Expert Pitch
Virginia Tech

Biostatistics expert: ‘We’re not testing as much as we should be’ for COVID-19's spread

30-Mar-2020 8:25 AM EDT, by Virginia Tech

A Virginia Tech professor who specializes in statistical modeling and disease surveillance says the United States has to do a better job of testing for the novel coronavirus if the country is to be successful in mitigating the virus’ spread.

“We don’t know what we don’t know,” said Ron Fricker, a professor of statistics in the Virginia Tech College of Science. “COVID-19 is here but we don’t have a good estimate of how widespread it is in the general population. That’s a real challenge. You can’t contain a virus if you don’t know where it is. It’s like trying to drive your car using only the rearview mirror.”   

Prior to his work at Virginia Tech, Fricker was senior statistician at the RAND Corporation and the associate director of the RAND National Security Research Division, a unit within the RAND Corporation responsible for conducting research and analysis on complex national defense policy and strategy problems. 

Having reliable data about COVID-19 incidence in the general population is critical and a necessary part of slowing the rate of infections in a given area, he said.

“Key to combatting and containing the virus is understanding how it is affecting people, including its morbidity and mortality; how it is spreading between people; and tracking those who may be infected so that we can most effectively try to control the outbreak,” Fricker said. “All of those tasks, and more, depend on good data and the appropriate use of statistical methods.” 

Fricker noted that several current outbreaks in the country — including in California, Washington state, and New York City — provide crucial data about the coronavirus’ apparent spread. But owing to the relatively small number of tests that have been performed across the U.S., there’s still much more to learn about how the pathogen is transmitted.

“This is a highly contagious, highly transmissible disease,” Fricker said. “It’s not just New York. It’s not just Washington state. It is in many more places across the U.S. and we just don’t know it.”

 [More: Find additional Virginia Tech expertise related to COVID-19 here.] 

The fact that the novel coronavirus evidently started in China and initially spread elsewhere means the U.S. can learn from what's worked and what hasn’t in other countries, Fricker said. He cited South Korea and Germany as examples of countries which have used widespread testing very effectively to flatten the curve, a phrase now part of the modern zeitgeist which refers to attempts to have fewer people infected at one time, thereby preventing a surge that could inundate healthcare systems and potentially result in far more deaths.

“If we were to test more widely as South Korea has, we could make targeted actions much more accurately,” Fricker said. “We can understand the progress and estimate roughly what’s going to happen in the U.S. based on the world. What we can't do is accurately model at the regional or county level and create further projections.”

He added: “There’s little unique about the U.S. except for the fact we’re not testing as much as we should be.”

Like many experts who’ve spoken publicly or published early research, Fricker said he believes the virus has spread much further than current testing reveals.

“If you asked me right now what the prevalence of COVID-19 is in a given county, the answer is we don’t know,” he said. 

Fricker said the models being developed by those in academia and government will inherently improve as time goes on and more variables can be quantified.

“If the goal is to understand how it spreads, you need to understand the science behind it,” he said, noting that early research into how the coronavirus is transmitted person-to-person, how long it remains on surfaces, and other details will all help bring projections into focus. “All those kinds of things we have some information on, and we can use them to at least create rough projections.”

About Fricker

Ron Fricker is a professor of statistics at Virginia Tech with research focused on the performance of various statistical methods for use in disease surveillance, and statistical process control methodologies more generally. 

He is the co-author of "Monitoring the Health of Populations by Tracking Disease Outbreaks: Saving Humanity from the Next Plague,” which was published last month. So timely is the book that publication was briefly halted for numerical updates of those infected by the novel coronavirus. He is also the author of other works focusing on statistical methods for biosurveillance.

“We were motivated to write the latest book because the work of public health officials often critically depends on the use of statistical methods to help discern whether an outbreak may be occurring and, if there is sufficient evidence of an outbreak, then to locate and track it,” Fricker said. “With the recent outbreaks of diseases such as swine and bird flu, Ebola, and COVID-19, the role that epidemiologists and biostatisticians play is more important than ever.”  View his bio.

Our studio

Finding reliable experts for media interviews is especially important during this difficult time. Virginia Tech's television and radio studios can broadcast live HD audio and video to networks, news outlets, and affiliates interviewing Virginia Tech faculty and staff. The university does not charge for use of its studios. Video is transmitted by LTN Global Communications; Skype, FaceTime, or similar products; or file sharing (Dropbox, Google Drive, We-Transfer, etc.). Radio interviews can be transmitted by ISDN, Comrex, phone, smartphone recording, or file sharing.

Filters close

Showing results

110 of 5575
Released: 6-May-2021 4:20 PM EDT
How to Win Over Vaccine Skeptics: Live Expert Panel for May 20, 3pm ET

How to Win Over Vaccine Skeptics: Live Expert Panel for May 20, 3pm ET

Released: 6-May-2021 2:15 PM EDT
Review of the Emerging Evidence Demonstrating the Efficacy of Ivermectin in the Prophylaxis and Treatment of COVID-19
Front Line COVID-19 Critical Care Alliance (FLCCC Alliance)

After the Most Comprehensive Review to Date, a Panel of Leading Medical Experts Conclude that Ivermectin Should be Systematically and Globally Adopted for the Prevention and Treatment of COVID-19

Released: 6-May-2021 2:10 PM EDT
Mayo Clinic


Newswise: CSUCIVaxClinic4-29-21.JPG
Released: 6-May-2021 2:05 PM EDT
CSU Expands Vaccine Availability with New Partnerships
California State University (CSU) Chancellor's Office

Many CSU campuses now offer even more options for students and employees to get their COVID-19 shots, thanks to unique partnerships with national pharmacies and local hospitals.

Released: 6-May-2021 1:50 PM EDT
الأطفال أيضًا يواجهون آثارًا طويلة المدى لفيروس كورونا المستجد (كوفيد-19)
Mayo Clinic

مدينة روتشستر، ولاية مينيسوتا ― تؤثر الآثار طويلة المدى لعدوى فيروس كورونا المستجد (كوفيد-19) على صحة بعض الأطفال والمراهقين، وكذا البالغين. في حين أن معظم الأطفال المصابين بعدوى فيروس كورونا المستجد (كوفيد-19) يعانون من أعراض خفيفة أو لا تظهر عليهم أي أعراض على الإطلاق، فإن أي شخص أصيب بفيروس كورونا المستجد (كوفيد-19) - حتى لو كان المرض خفيفًا أو لم تظهر عليه أعراض - قد يُصاب بآثار طويلة المدى.

Released: 6-May-2021 1:35 PM EDT
As crianças também enfrentam efeitos de longo prazo da COVID-19
Mayo Clinic

Os efeitos de longo prazo da infecção por COVID-19 estão afetando a saúde de algumas crianças e adolescentes, bem como de adultos. Embora a maioria das crianças com infecção por COVID-19 tenha sintomas leves ou nenhum sintoma, qualquer pessoa que teve COVID-19, mesmo se leve ou sem sintomas, pode ter efeitos de longo prazo.

Newswise: Retired Nurse Returns to the Front Lines
Released: 6-May-2021 1:25 PM EDT
Retired Nurse Returns to the Front Lines
Rush University Medical Center

During the COVID-19 pandemic, Martha Kuhr, RN, came out of retirement to care for some of Rush University Medical Center's most severe COVID-19 patients in the CVICU.

Released: 6-May-2021 12:40 PM EDT
Achieving high COVID-19 vaccine coverage levels by summer can prevent millions of cases
CUNY Graduate School of Public Health and Health Policy

With around 30 percent of the U.S. population now fully vaccinated, the rate of daily vaccinations has started to slow, raising concerns that greater efforts and investments may be needed to reach higher coverage levels.

Released: 6-May-2021 12:30 PM EDT
Los niños también enfrentan los efectos a largo plazo de la COVID-19
Mayo Clinic

Los efectos a largo plazo de la infección por COVID-19 están repercutiendo en la salud de algunos niños y adolescentes, además de los adultos. Si bien la mayoría de los niños con infección por COVID-19 tienen síntomas leves o no tienen síntomas en absoluto, cualquier persona que haya tenido COVID-19 (incluso si la enfermedad fue leve o no tuvieron síntomas) puede tener efectos a largo plazo.

Showing results

110 of 5575