Northern Tablelands MP Adam Marshall has said he feels "pretty ordinary" about the effect his positive COVID-19 result has had on state MPs.
Three New England politicians will remain in isolation for two weeks after being exposed to the virus in Sydney.
Despite testing positive for the virus, Mr Marshall said he still felt physically okay on Thursday afternoon and said he was just thankful he did not carry COVID-19 back to his electorate.
"Everything the experts have said about this new Delta variant is spot-on, it's incredibly virulent, incredibly contagious," he said.
"I contracted it at a pizza place on Monday night in Sydney and had no physical contact with anyone; I didn't brush against anyone, shake hands or talk to anyone except the three people I had dinner with - I didn't even go to the bathroom there.
"I have still contracted COVID from someone who was in that restaurant, which is proof that is takes very little for this new variant to be transmitted from person to person; it's so dangerous and it needs to be taken seriously."
Mr Marshall has been ordered to self-isolate in Sydney for 14 days until he returns a negative test.
He said he was grateful the virus was detected while he was still in Sydney, and that it could have been "far worse" if he brought it back to the New England region.
"If I had exposed my electorate, I wouldn't have been able to live with myself, I'm very grateful that it's happened in this way," he said.
While in isolation Mr Marshall said his focus remains on helping farmers tackle the mice plague, after the Australian Pesticides and Veterinary Medicine Authority (APVMA) rejected a proposal to use bromadiolone around the perimeter of crops.
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