Coronavirus or the flu? 'Impossible to distinguish' between the two without testing, doctor says

The changing of the seasons isn’t good news for public health purposes.

As the U.S. continues grappling with significant spikes in coronavirus cases, the country is now also facing flu season (from roughly November through February). To make matters worse, it’s next to impossible to distinguish the two illnesses, according to one expert.

“We’re definitely concerned about our testing capacity,” Dr. Taison Bell, an assistant professor of medicine in the infectious disease and pulmonary divisions at the University of Virginia, said on Yahoo Finance. “It is very hard to distinguish — actually impossible to distinguish — patients who have the flu versus the coronavirus versus the other respiratory illnesses that we have in the winter that all surge. So our testing capacity needs to be way greater than where it is right now.”

‘It’s here and it’s surging’

The symptoms for coronavirus and the flu virus are largely similar. Both involve a fever, body aches, and chills, and both can cause pneumonia, a serious lung infection. Both are infectious and potentially lethal, though COVID-19 — the disease caused by coronavirus — seems to be much more infectious and deadly.

Some of the key differences include how many COVID-positive patients lose their sense of taste and smell and that many are often asymptomatic but still pass the virus on to others. There is no known cure for the coronavirus, although numerous pharmaceutical companies are in the process of developing a vaccine. The flu, on the other hand, has a vaccine that is offered each year to lower your risk of contracting it.

“We’ve seen how cases can overrun hospital systems and have capacity reached in ICUs or exceeded,” Bell said. “In some cases, patients being transferred out of the state to get care because there aren’t enough resources to take care of these patients. And along with that goes our PPE supply, the health of our staff, and our employees who work in these hospitals. Because the cold and flu season affects us too.”

Hospital staff would be previously able to come to the hospital if they had a cough or “the sniffles,” as long as they didn’t have a fever. But now, everything is considered a risk until proven otherwise.

Differences between allergies, cold, flu, and coronavirus. (Chart: Yale NewHaven Health)
Differences between allergies, cold, flu, and coronavirus. (Chart: Yale NewHaven Health)

As a result, Bell said, “I do think there’s going to be a lot of staff outages as well as capacity reach and maybe strains on testing in some areas of the country.”

The rise in coronavirus cases at the same time as flu season is a nightmare for any health professional.

“We were afraid that we would have a lot of cases going into the cold and flu season,” Bell said. “We’re having more cases growing faster than testing. Our percent positivity in some states is frighteningly high. Now we want it below at least 10% but ideally below 5%.”