Worker at downtown Las Vegas’ Circa site tests positive for coronavirus Katelyn Newberg, Las Vegas Review-Journal · April 19, 2020 at 10:20 am A worker at the Circa construction site in downtown Las Vegas has tested positive for COVID-19, the company said. The company overseeing the construction was notified on Thursday that the worker had tested positive, according to a statement from McCarthy Building Cos. The hotel-casino, which is being developed by D Las Vegas and Golden Gate owner Derek Stevens, is one of the major construction projects continuing in Las Vegas amid the coronavirus pandemic. According to the statement, the area where the worker had been assigned was immediately shut down and sanitized, along with the “surrounding vicinity.” Other areas of the construction site were unaffected.