Despite clearly breaking regulations by allowing about 20 people inside the house, the party's hosts maintained they were following the rules, CBS News reported Friday.
"They all do", the student replied, gesturing toward his housemates.
"We are having a significant issue with a small number of students, and we have disturbing information stemming, frankly, from the fraternities in particular", University of Tennessee Chancellor Donde Plowman told students and staff in an online address.
Miami University said it receives student violations from the Oxford PD.
"That's what we're trying to prevent", the officer said.
"I've never seen this before", the officer said, waving the student over. He added that some of the guests had also tested positive.
"So you have other people here, and you're positive for Covid?".
"We do not know if anybody else at that party was aware of the Covid-positive residents because some of them left while the officer was there" Lt. Lara Fening told Local 12. However, data from Lafayette County show it had one of the highest per-capita rates of infection in the nation, with 1,053 cases per 100,000 people in the last two weeks, the analysis noted. "Our concern is because of these cases and clusters, as well as our rigorous quarantine protocols, we have more than 500 students in quarantine at this time".
"You have other people here and you're positive for COVID?" the officer asked.
The University of Exeter said it would work with Halo, the UK's first commercial provider of saliva-based Covid tests, to offer a simple and fast means of both finding cases and reassuring students who fall ill but are not infected.
Oxford police cited six men who attended a house party near Miami University on Saturday for violating the state's mass gathering and quarantine ordinance. The school is supposed to start in-person classes September 21.
The Daily Mail reported a second resident claimed to be sick in bed and did not partake in the party, according to the report.
"This decision was made after many lengthy discussions and consultation with public health experts", Miami University President Gregory Crawford said in the statement.
The moves come as Mr Johnson on Wednesday called on universities to not send students home in the event of an outbreak, and pleaded with students not to socialise in groups of more than six.