Medics in South Korea have found an increasing number of patients are testing positive for the coronavirus a second time, despite already overcoming the deadly virus. At least 116 such cases have been identified, posing problems for the idea of issuing immunity certificates in the UK, which would allow those who have recovered from COVID-19 to leave the house.
Health Secretary Matt Hancock first put forward the proposal earlier this month which is based on the theory that once the body has overcome the virus, antibodies have been developed to fight the infection – leaving the body immune to a second wave.
But evidence in South Korea suggests such a theory may prove ineffective, as people infected may not be protected from catching it again.
Officials in the country were quick to act to the coronavirus outbreak, conducting a rigorous testing programme and introducing contact tracing.
Just over 10,000 people have tested pozitive .