McDonald Jones Stadium is undergoing a "full clean" but people who attended Sunday's A-League fixture at the venue aren't required to be tested or self isolate if they aren't showing coronavirus symptoms.
Football Federation Australia and the Newcastle Jets released statements on Thursday.
It comes after being confirmed that someone with a positive case of COVID-19 went to watch the Jets play Western United at the Turton Road location on August 2.
"FFA has been advised by McDonald Jones Stadium that a fan who attended the Newcastle Jets match on Sunday 2 August has recently tested positive for COVID-19," according to the FFA statement.
"McDonald Jones Stadium, Newcastle Jets and FFA will continue to work with NSW Health to monitor this situation.
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"The match at McDonald Jones Stadium was operated under the COVID Safe Plan and is currently undergoing a full clean.
"FFA strongly recommends that fans and stadium staff follow the advice of NSW Health and if they attended the match to be alert for symptoms, and if any develop to get tested and self-isolate immediately.
"There are no known cross-over opportunities with teams, high performance staff and match officials as they all operate within designated controlled zones."
The Jets released a statement saying: "The advice from NSW Health at this time urges patrons who attended this match to be alert for symptoms (even mild symptoms, including fever, sore throat, runny nose and cough), and if any symptoms develop to get tested and self-isolate immediately. There is currently no need for attendees to self-isolate or get tested if they are not showing symptoms."
"The most important person in this situation is our young player with the virus, and we wish him all the best," Jets CEO Lawrie McKinna said.
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