In South Africa, there are cases of reinfection of mutant coronavirus in people who have had COVID-19 in South Africa, said Anthony Pouch, director of the National Institute of Allergy and Infectious Diseases (NIAID).



"Something strange is happening right now. Some people were infected a few months ago, and now they are reinfecting this new species" while talking to many fellow South African scientists and public health experts on NBC News. Said,” he said.



People who have already had Corona 19 once have been reinfected with the mutant virus.



In South Africa,'B.1.351', a mutant virus known to have a stronger spreading power, is prevalent.



"This suggests that the immune response induced by the first infection wasn't good enough to prevent the second infection," said Pouch.



But he stressed that vaccination seems to be as good or better than natural infections in preventing such reinfections.



"Vaccines seem to be better at inducing that kind of (immune) protection," said Pouch. "Because they're 50-88% effective in preventing severe disease."



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