MSNBC host Chris Hayes was quickly fact checked Sunday after denouncing Rep. Paul Gosar (R-Ariz.) for referring to coronavirus as the "Wuhan Virus."

Gosar announced Sunday that he was officially undergoing self-quarantine after possible exposure to the coronavirus at CPAC last month.

"Just astoundingly gross to call it the Wuhan Virus," Hayes said.

The insinuation, which was fleshed out by Hayes's MSNBC colleague David Gura, is that referring to coronavirus as the "Wuhan virus" is racist.

But, in fact, the coronavirus outbreak originated in Wuhan, China. The city of 11 million was also hardest hit by the disease, resulting in the Chinese government essentially locking down the city from the outside world.

What was the response?

Critics pointed out to Hayes that China, in fact, refers to coronavirus as the "Wuhan virus."

Others highlighted the fact that well-known infectious diseases are typically named in relation to their origin.

It was also pointed out that American media outlets, like CNN and NBC, have referred to coronavirus as "Wuhan virus."

Meanwhile, Hayes's critics also showed that he has recent history of geographically referring to disease outbreaks.

By Monday morning, "#WuhanVirus" was trending on social media.