On Monday, the Covid-denier singer revealed on Facebook live that he had caught coronavirus.
He said many people warned him against announcing his diagnosis.
"I have had flu symptoms for the last 10 days and I thought I was dying, just a clusterf***," he said.
"Today is the 19th of April 2021 during clusterf*** pandemic... I was tested positive today. I got the Chinese s***."
Nugent, an outspoken Trump supporter, referred to the virus as "Chinese s***" during his announcement, echoing Trump's "Chinese virus" speeches.
"My god, what a pain in the a**," he added, describing his symptoms.
Despite saying he "literally could hardly crawl out of bed the last few days", the musician says he still won't take the vaccine because "nobody knows what's in it".
More than three million people have died of Covid-19 in just over a year as the pandemic continues to kill thousands across the world every day.