January 9, a female patient diagnosed with the South African mutant virus was infected again after recovering, which may be the first case in the world.
Reuters reported that researchers said that Brazil and South Africa had previously had cases of mutant virus infection for the second time, but it was the first time that they were infected with mutant viruses again.
The patient who was twice diagnosed with the mutant virus was a 45-year-old woman living in the state of Bahia in northeast Brazil.
Solano, who led the study, said that they observed a mutant strain of the virus called E484K in the patient’s second virus gene sequencing, which may hinder antibodies.
It was first discovered in South Africa and attracted widespread attention in the medical community.