Officials and experts have not yet made conclusions about the cause of the positive status, amid epidemiological investigations underway.
A total of 91 positive cases after recovering were recorded in South Korea as of April 10, nearly doubling from 51 earlier this week. Nearly 7,000 people have been confirmed to recover, according to the Korean Centers for Disease Control and Prevention (KCDC).
In a press conference on April 10, South Korean health officials also said they were not clear the cause of the condition and epidemiological investigation is underway, according to Reuters.
However, according to KCDC Director Jeong Eun Kyeong, the greater possibility is that the virus in the patient’s body has “reactivated”, not the patient re-infected with the virus.
The re-infection of the virus is of concern to the international community, as many countries are hoping that former sufferers will be able to help develop community immunity strong enough to prevent recurrence of the disease.
“This number will only continue to be higher, 91 cases is just the beginning,” said Kim Woo Joo, a professor of infectious diseases at Guro Hospital at Korea University.
JeCD of KCDC also raised the possibility that the patient might have a relapse, rather than a viral infection.
In addition, the cause may be the wrong test result, or the virus components remain in the patient’s body but do not infect or endanger them as well as others, according to other experts. .
“There are many different explanations and variables,” said Jung Ki Suck, a professor of pulmonary disease at Sacred Heart Hospital at Hallym University. “The government needs to respond to each of these variables.”
South Korea on April 10 recorded 27 new cases, the lowest after the number of new cases per day peaked at more than 900 in late February, according to KCDC. In total, the country had 10,450 people infected with the virus, of which 211 died.