'Superspreader' in South Korea infects nearly 40 people with coronavirus

Officials disinfect a church in Daegu, South Korea, on Feb. 20.
Officials disinfect a church in Daegu, South Korea, on Feb. 20. (Image credit: YONHAP/EPA-EFE/Shutterstock)
All about COVID-19

An illustration of a coronavirus.

(Image credit: Shutterstock)

See live updates on the new coronavirus (opens in new tab)
How deadly is COVID-19? (opens in new tab)
How does the new coronavirus compare with flu? (opens in new tab)
Why are children 'missing' from coronavirus outbreak? (opens in new tab)

Update (Sunday, Feb. 23): The number of coronavirus cases in South Korea has soared to about 602, according to The New York Times (opens in new tab). More than half of those cases involve members of, or those somehow linked to, the religious sect, the Shincheonji Church of Jesus, where a so-called superspreader infected at least 37 people last week. 

A so-called superspreader infected at least 37 people at her church with the new coronavirus, and dozens of additional worshippers are also showing symptoms of the disease, called COVID-19, according to news reports.

The 61-year-old woman attends the Shincheonji Church of Jesus the Temple of the Tabernacle of the Testimony in Daegu, South Korea, according to the international news outlet AFP. The city, located in the southern part of the country, is home to about 2.5 million people. The woman, called "Patient 31" by Korea's Centers for Disease Control and Prevention, developed a fever on Feb. 10 and attended four church services before being diagnosed with COVID-19. 

Despite running a fever, the woman twice refused to be tested for the coronavirus, as she had not recently traveled abroad, according to The Guardian. So far, she and 37 other members of the church have tested positive for the novel coronavirus, called SARS-CoV-2, and 52 additional churchgoers have shown symptoms of infection but have not yet been tested. (SARS-CoV-2 is the name of the coronavirus that causes COVID-19.)

Authorities described the outbreak as a "super-spreading event," as the lone woman transmitted the infection to an unusually high number of people, according to Reuters. Current estimates suggest that a single person with the novel coronavirus spreads the infection to about 2.2 additional people, on average. The surge of infection at the church brings the total number of confirmed cases in South Korea to 104; one death associated with the virus has occurred in the country so far.

Related: The 9 deadliest viruses on Earth

"We are in an unprecedented crisis," Daegu Mayor Kwon Young-jin said during a news conference this week, Reuters reported. "We've asked [all members of the church] to stay at home, isolated from their families." Additionally, Kwon advised residents of Daegu to stay indoors and ordered that all schools for young children and public libraries be shut down, according to The Guardian. Local and U.S. military forces stationed in the city have been forbidden from traveling off base or receiving outside guests. 

"It's like someone dropped a bomb in the middle of the city. It looks like a zombie apocalypse," resident Kim Geun-woo told Reuters by phone in regard to the abandoned streets of the city. 

The Shincheonji church announced today (Feb. 20) that it had closed down all of its facilities nationwide, according to The Guardian. "We are deeply sorry that because of one of our members, who thought of her condition as a cold because she had not traveled abroad, led to many in our church being infected and thereby caused concern to the local community," officials said in a statement.

In the United Kingdom, a British man spread the virus to 11 people at a French ski resort after he had visited Singapore for a conference. That was also considered a super-spreading event. 

Originally published on Live Science. 

OFFER: Save at least 53% with our latest magazine deal! (opens in new tab)

OFFER: Save at least 53% with our latest magazine deal! (opens in new tab)

With impressive cutaway illustrations that show how things function, and mindblowing photography of the world’s most inspiring spectacles, How It Works (opens in new tab) represents the pinnacle of engaging, factual fun for a mainstream audience keen to keep up with the latest tech and the most impressive phenomena on the planet and beyond. Written and presented in a style that makes even the most complex subjects interesting and easy to understand, How It Works (opens in new tab) is enjoyed by readers of all ages.

Nicoletta Lanese
News Editor, Health

Nicoletta Lanese is a news editor on Live Science's health desk. She first joined the publication in 2019 as a staff writer. She holds degrees in neuroscience and dance from the University of Florida and a graduate certificate in science communication from the University of California, Santa Cruz. Her work has appeared in The Scientist Magazine, Science News, The San Jose Mercury News and Mongabay, among other outlets.