“Obviously, I’m very disappointed,” Johnson said. “I was really looking forward to competing this week, but I will do my best to come back as soon as possible.
“I have already had a few calls with the Tour’s medical team and I appreciate all the support and advice they have given me.”
Johnson has had a sensational year, scoring three wins and winning his first FedExCup Championship in East Lake last month. He was also named PGA Tour Player of the Year for the second time. JT Poston will replace Johnson in the CJ Cup field.
The news comes a week after Tony Finau was forced to withdraw from open Shriners Hospitals for Children after testing positive for the virus, which has killed more than 215,000 people in the United States. Finau will not participate in the CJ Cup either.
A handful of professional golfers have tested positive for the coronavirus since returning from the PGA Tour in June, including Briton Sam Horsfield and American Scottie Scheffler, who were unable to participate in the US Open due to their tests positive.