“It is important to find out, is whether those who have been tested positive again, IS sick. It is what it is all about.”

so says Lars Jørgen Østergaard, who is a researcher at the Department of Clinical Medicine, Aarhus University, for the B. T.

Late Friday evening, it emerged that 91 south koreans have been tested positive for the corona virus, after they were declared healthy a short time after finishing quarantine.

Jeong Eun-kyeong, who is the director of the Center for Disease control and Prevention (KCDC), told at a briefing that there is a greater probability that the virus has been what is called ‘gene-activated’ rather than that there is talk about re-infection.

Already on Monday it sounded, to 51 south koreans had been tested positive after being tested negative.

And there can be several reasons for this, says Lars Jørgen Østergaard. One of them is that the samples are taken in the wrong place and subsequently the right.

“It is in fact the case that the infection starts in the upper part of the respiratory tract i.e. nose and throat. Longer in the process it moves down towards the lungs. So if you take the test in the wrong place, where the infection is, it will be negative,” he explains.

“Have you taken it in the beginning, and it is positive and so is the horizontal down into your lungs, then you have taken a new try in the upper respiratory tract – it will be negative, then they come out, and then becomes positive again,” he says.

For such a virus can remain in the body for a while. Even if you think you have come over it.

“If those who have been healthy, not sick, but you find a virus, it can be the virus remains. Thus, residues of the virus. The Virus can sit in the body at least two months,” says Lars Jørgen Østergaard, who adds, that the healthy carriers of the virus.

He would not rule out, that there is talk about the fact that they have been infected again. The explanations of the new positive tests may be many, and it requires more knowledge.

One thing, the Danish researcher, however, beat fast.

“If there is talk about the virus-the debris then rubs it in certainly not. So missing all the, in order that the virus can live on in another human being,” says Lars Jørgen Østergaard.