The World Health Organization (WHO) has actually withdrawn a statement saying that patients with coronavirus infection-19 but who have no symptoms rarely transmit to others, CNBC reported on the 9th.

"It's a really complicated problem," said Maria Pankerk Hover, chief of the WHO New Diseases Team. "In fact, we don't have an answer yet."

"My yesterday was about very little research," said Pankerk Hover. "I think it's very rare, and I think it's a misunderstanding to say that asymptomatic transmission is very rare worldwide."

Some say that around 40% of the infection worldwide may be due to asymptomatic infections, but it was also a result of a study model and said it was not included in the WHO regular briefing the day before.

He added that most of the infections are from the bequest box, but some people do not have any symptoms.

"It is clear that both bequests and asymptomatics are part of the epidemic cycle," said Michael Ryan, WHO Assistant Secretary of Emergency Response. "The question is, what is the relative contribution of each group to the whole case?"

He added, "There is a lot to know about this. There are many unknowns."

Earlier, a major foreign press reported that the head of Pankerk Hover said in a video press briefing just held at the WHO headquarters in Geneva, Switzerland, "As a result of analyzing the data held by WHO, very few cases of asymptomatic infected patients were carrying Corona19 to others." .

The remarks later created confusion between outside experts and health officials, CNBC said.

However, South Korea's quarantine authorities have stressed that asymptomatic patients can spread the disease to other people as well as the propagation power is lower than that of the case.

Joon-wook Kwon, Deputy General Manager of the Central Defense Countermeasures Headquarters said, "There is an indicator of'secondary attack rate' indicating how many patients have a secondary infection, but it is only 0.8% when there are no symptoms." It goes up, but when it is mild, it goes up to 3.5% and when symptoms get worse, it goes up to 5.7%."

He said, "As a preventive authority, even if it is asymptomatic, from the beginning to the end, it causes radio waves anyway, so it tracks the path of propagation." Corona 19 is not asymptomatic, but even before the onset of symptoms. "It's more of a global trend than a pathogen."