The chart-topping group was supposed to appear in Pennsylvania on Thursday night but pulled out due to Stanley's diagnosis.

Stanley, 69, is fully vaccinated, as is "everyone on the entire tour, both band and crew," Kiss said in a statement.

The band said more information on future show dates would be released as soon as possible.

The statement said: "The band and their crew have operated in a bubble independently to safeguard everyone as much as possible at each show and in between shows.

"The tour also has a COVID safety protocol officer on staff full-time that is ensuring everyone is closely following all CDC guidelines."

Stanley told fans he is "fine", describing the diagnosis as "absolute nonsense".

He tweeted: "PEOPLE!!! I am fine! I am not in ICU! My heart allows me to do 26 miles a day on my bike! I don't know where this came from but it's absolute nonsense."

The more contagious Delta variant of the virus has led to a spike in cases across the US, hampering the live entertainment industry's recovery.

At the beginning of summer COVID-19 appeared to be on the retreat in the US, however it has made a deadly return.

The daily average of new cases as of August 25 was 152,341, according to official figures.

Musicians including Stevie Nicks, Garth Brooks and Nine Inch Nails have all axed their performances for the rest of the year, citing concern over the Delta variant.

Australian Associated Press