The Lower Eyre Peninsula District Council is urging everyone who attended a meeting at Cummins on March 17 should adhere to SA Health recommendations for the security of the community.
Centre Alliance senator Rex Patrick confirmed on Monday he had tested positive for COVID-19.
Due to the senator attending a meeting at the Cummins Ramblers Football Club, which had about 200 people in attendance.
on Tuesday SA Health has advised all who attended the meeting to self isolate until March 31.
Council chief executive officer Rod Pearson said it was important for attendees to remain on their properties and to avoid outside contact.
"To protect our community all 200 people who attended the meeting in Cummins must abide by the decision of SA Health," he said.
"It is also suggested that people who attended the meeting start a diary of contacts they had prior to the self-isolation rules being put in place, as SA health may need to conduct traces if we have an out break of the virus in our community."
The council has confirmed five members, including Mr Pearson and mayor Jo-Anne Quigley were in self isolation.
Eyre and Far North Local Health Network chief executive officer Verity Paterson said the network was working closely with Dr. Quigley and his surgery and was ready to provide support with testing, on his advice.
"Everyone who attended the meeting with Senator Patrick must self isolate for 14 days," she said.
"If they feel unwell and develop fever or respiratory symptoms, they should contact Dr Quigley's or another local GP surgery for an assessment."