Coronavirus cannot attack same person twice: Researchers

New Delhi : The South Korean scientists have claimed that most of the cases where people have been reported of contracting coronavirus twice were the cases of testing failure. They have claimed that once a person has recovered from coronavirus then it is unlikely that he gets it back.

There have been more than 10,000 confirmed coronavirus cases in South Korea, with 245 deaths - a 2.3% fatality rate, which is lower than the 3.4% average as stated by the World Health Organisation.

Around 277 people were reported of contracting the virus again in the country, leading to belief that virus could be mutating so quickly that people were not necessarily immune to catching it again.

However, the genetic analysis of the virus has not found any change and it can be defeated with the already built immune system in the patients.

In wake of the reports, the World Health Organisation has warned countries from allowing the people who have been given immune passport, issued to those who have recovered from the virus and have antibodies present in their blood.

Immunity passports are a proposed way of allowing countries to begin to lift their coronavirus lockdowns in a targeted manner and resume economic activity.

"People who assume that they are immune to a second infection because they have received a positive test result may ignore public health advice," the WHO warned.

"The use of such certificates may therefore increase the risks of continued transmission," its guidance added at the time, although this guidance is currently being kept under review.