Team leader and driver Johannes Lochner of Germany corners in the second men's unofficial bobsleigh training session at the Olympic Sliding Centre, ahead of the Pyeongchang 2018 Winter Olympic Games, in Pyeongchang on February 8, 2018. / AFP PHOTO / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

With the opening ceremony set for Friday, an outbreak of the highly infectious gastrointestinal bug norovirus already has a solid lead at the 2018 Olympic Winter Games in South Korea.
In just a few days, official case counts have nearly quadrupled, according to multiple reports from The New York Times. The tally was 32 just two days ago but quickly climbed to 86. Then another 42 cases were confirmed by Thursday night, bringing the total to 128 around the Olympic sites.
Officials at the games first announced the outbreak of the virus—also called the “winter vomiting bug”—on Tuesday. Security personnel were the first to test positive, and about 1,200 of the security staff were sequestered in their rooms at the time. About 1,100 people, some non-security personnel, were still in quarantine on Thursday. South Korea deployed 900 military personnel to make up for the quarantined security workers.
But the infection has now spread …
READ MORE ON ARSTECHNICA.COM